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You searched for: Journal name Behavioral ecology and sociobiology Remove constraint Journal name: Behavioral ecology and sociobiology Subject females Remove constraint Subject: females Subject term body size Remove constraint Subject term: body size
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1. Does ecology and life history predict parental cooperation in birds? A comparative analysis

Author:
Xiaoyan Long; Yang Liu; András Liker; Franz J. Weissing; Jan Komdeur; Tamás Székely
Source:
Behavioral ecology and sociobiology 2022 v.76 no.7 pp. 92
ISSN:
0340-5443
Subject:
body size; chicks; data collection; diet; females; invertebrates; life history; males; nests; phylogeny; progeny; sociobiology
Abstract:
... In animals, species differ remarkably in parental care strategies. For instance, male-only care is prevalent in teleost fishes, while biparental care predominates in birds and female-only care is widespread in mammals. Understanding the origin and maintenance of diversified parental care systems is a key challenge in evolutionary ecology. It has been suggested that ecological factors and life-hist ...
DOI:
10.1007/s00265-022-03195-5

2. Evolution of reduced mate harming tendency of males in Drosophila melanogaster populations selected for faster life history

Author:
Tanya Verma; Anuska Mohapatra; Harish Kumar Senapati; Rakesh Kumar Muni; Purbasha Dasgupta; Bodhisatta Nandy
Source:
Behavioral ecology and sociobiology 2022 v.76 no.6 pp. 82
ISSN:
0340-5443
Subject:
Drosophila melanogaster; antagonism; body size; courtship; directed evolution; fecundity; females; life history; males; mortality; sexual selection; sociobiology
Abstract:
... Detrimental effect of males on female, often termed mate harm, is a hallmark of sexual conflict. Allowed to evolve unchecked, mate harming traits are predicted to bring down average fitness of a population, unless mitigated by the evolution of resistance in females. In addition, life history may also modulate sexual conflict, but the mechanism is not clearly understood. Here we investigated the ev ...
DOI:
10.1007/s00265-022-03187-5

3. It’s the time of the season: seasonal variation in sexually conflicted size-assortative pairing

Author:
Whitney L. Heuring; Melissa Hughes
Source:
Behavioral ecology and sociobiology 2022 v.76 no.8 pp. 107
ISSN:
0340-5443
Subject:
body size; breeding season; burrows; females; males; monogamy; seasonal variation; shrimp; sociobiology; territoriality
Abstract:
... Size-assortative pairing is common across a wide range of taxa. In many cases, both sexes would benefit from pairing with a mate larger than themselves. As males and females cannot simultaneously be larger than their pair mate, size differences within pairs reflect which sex is able to obtain this benefit. Snapping shrimp can be found in pairs year-round, and both males and females would benefit f ...
DOI:
10.1007/s00265-022-03214-5

4. Kin-structured cooperatively breeding groups due to limited dispersal in the obligate shell-brooding cichlid Neolamprologus meeli

Author:
Taiga Saeki; Shun Satoh; Joachim G. Frommen; Masanori Kohda; Satoshi Awata
Source:
Behavioral ecology and sociobiology 2022 v.76 no.7 pp. 89
ISSN:
0340-5443
Subject:
Gastropoda; Neolamprologus; body size; females; fish; males; models; monogamy; nests; paternity; phylogeny; polygyny; progeny; sociobiology; Lake Tanganyika
Abstract:
... Cooperative breeding systems, where individuals other than parents assist in raising offspring, have been documented in insects, fish, birds, and mammals. Still, the factors driving the evolution of such complex systems are not fully understood. Here, we report a new example of cooperative breeding in the obligate shell-brooding cichlid fish Neolamprologus meeli from Lake Tanganyika. Field observa ...
DOI:
10.1007/s00265-022-03201-w

5. Multiple phenotypic traits predict male mating success in a critically endangered frog

Author:
Shannon R. Kelleher; Aimee J. Silla; Michael S. McFadden; Mitchell G. Stares; John A. Endler; Phillip G. Byrne
Source:
Behavioral ecology and sociobiology 2022 v.76 no.3 pp. 40
ISSN:
0340-5443
Subject:
Pseudophryne corroboree; acoustics; body size; color; ecology; females; frogs; males; mating behavior; phenotype; sociobiology
Abstract:
... Complex sexual signals spanning multiple sensory modalities may be common in nature, yet few studies have explored how combinations of phenotypic traits influence male attractiveness and mating success. Here, we investigate whether combinations of multiple male phenotypic traits (both within and across sensory modalities) predict male mating and fertilization success in the critically endangered s ...
DOI:
10.1007/s00265-021-03119-9

6. Fertilization success suggests random pairing in frogs with regard to body size

Author:
Johana Goyes Vallejos; Johniah Gomez; Abner D. Hernández-Figueroa; Rebecca Vera; David M. Green
Source:
Behavioral ecology and sociobiology 2021 v.75 no.10 pp. 140
ISSN:
0340-5443
Subject:
Anura; body size; clutch size; females; males; mating behavior; mating competitiveness; reproductive success; sociobiology
Abstract:
... Size-assortative mating is a pattern of non-random pairing among individuals that has been presumed to arise due to the enhanced reproductive success that may accrue from mating with an individual of similar size. Its proximal mechanism may be female choice for similarly sized mates and/or large-male advantage during bouts of direct male-male competition. The hallmark for the occurrence of size-as ...
DOI:
10.1007/s00265-021-03081-6

7. Selecting on age of female reproduction affects lifespan in both sexes and age-dependent reproductive effort in female (but not male) Ceratitis cosyra

Author:
Kevin Malod; Petrus D. Roets; Henrika Bosua; C. Ruth Archer; Christopher W. Weldon
Source:
Behavioral ecology and sociobiology 2021 v.75 no.8 pp. 123
ISSN:
0340-5443
Subject:
Ceratitis cosyra; Sclerocarya birrea subsp. caffra; asymmetry; body size; courtship; ecology; eggs; fecundity; females; fruit flies; life history; longevity; males; sociobiology; spermatheca; spermatozoa
Abstract:
... The trade-off between lifespan and reproduction is central to our understanding of life-history evolution. Laboratory selection experiments have been a powerful tool for quantifying this trade-off, but these tend to be restricted in taxonomic scope, which may limit our understanding. In addition, research often focuses on the trade-off between lifespan and reproductive effort in females, and far l ...
DOI:
10.1007/s00265-021-03063-8

8. Size is not everything: differing activity and foraging patterns between the sexes in a monomorphic mammal [Erratum: May 2021, v.75(5), p.80]

Author:
Hanna Kavli Lodberg-Holm; S.M.J.G. Steyaert; S. Reinhardt; F. Rosell
Source:
Behavioral ecology and sociobiology 2021 v.75 no.4 pp. 76
ISSN:
0340-5443
Subject:
Castor fiber; adults; aquatic plants; body size; ecology; energy expenditure; females; males; mammals; monogamy; sexual dimorphism; sociobiology; spring; summer
Abstract:
... Animals balance foraging with other activities, and activity patterns may differ between sexes due to differing physical requirements and reproductive investments. Sex-specific behavioural differences are common in sexually dimorphic mammals, but have received limited research attention in monomorphic mammals where the sexes are similar in body size. Eurasian beavers (Castor fiber) are obligate mo ...
DOI:
10.1007/s00265-021-03010-7

9. Brood sex ratio modulates the effects of extra food on parental effort and sibling competition in a sexually dimorphic raptor

Author:
Camilla Soravia; Jacopo G. Cecere; Diego Rubolini
Source:
Behavioral ecology and sociobiology 2021 v.75 no.3 pp. 62
ISSN:
0340-5443
Subject:
Falco naumanni; body size; energy; evolution; females; food availability; males; nesting sites; nests; sex ratio; sexual dimorphism; sociobiology
Abstract:
... Conflicts are inherent to family systems and may occur at three levels. First, each parent benefits if its mate takes the greater share of parental investment. Second, offspring try to manipulate their parents into devolving more resources than it is optimal for them. Third, siblings compete for resources. Food availability can affect the dynamics of each level of interaction. By means of a food s ...
DOI:
10.1007/s00265-021-02970-0

10. Male condition and group heterogeneity predict extra-group paternity in a Neotropical bat

Author:
Danielle M. Adams; Gerald S. Wilkinson
Source:
Behavioral ecology and sociobiology 2020 v.74 no.11 pp. 136
ISSN:
0340-5443
Subject:
Neotropics; Phyllostomus hastatus; body condition; body size; females; group size; males; mating competitiveness; paternity; polygyny; progeny; reproductive success; sexual selection; social class; sociobiology
Abstract:
... Extra-group paternity, in which offspring are sired by a male outside the breeding group, may alter the distribution of reproductive success in a population, thus affecting the opportunity for sexual selection. Both inter- and intraspecific studies have focused largely on mating systems in which females choose their social mates, and less is known about extra-group paternity in polygynous systems ...
DOI:
10.1007/s00265-020-02919-9

11. Sexually dichromatic coloration of female Iberian green lizards correlates with health state and reproductive investment

Author:
Renata Kopena; Pilar López; Viktoria Majlathova; José Martín
Source:
Behavioral ecology and sociobiology 2020 v.74 no.11 pp. 131
ISSN:
0340-5443
Subject:
Borrelia burgdorferi; Lacerta schreiberi; body condition; body size; carotenoids; chest; color; eggs; energy; fecundity; females; genetic correlation; hemoparasites; immune response; inflammation; parasite load; progeny; sexual selection; sociobiology; throat; ticks
Abstract:
... Females often have chromatic patterns that differ from those of males. The evolution and function of female coloration is less known than those of males. Female ornaments can result from non-adaptive intersexual genetic correlation, but they may also signal female quality, health state, or potential fecundity. We examined whether the spectral characteristics of the sexually dichromatic coloration ...
DOI:
10.1007/s00265-020-02915-z

12. Behavior outweighs body size in mediating male reproductive success in a nest-building fish, bluehead chub

Author:
Seoghyun Kim; Kasey C. Pregler; Elizabeth L. Cushman; Tanya L. Darden; Yoichiro Kanno
Source:
Behavioral ecology and sociobiology 2020 v.74 no.12 pp. 148
ISSN:
0340-5443
Subject:
Nocomis leptocephalus; automation; body size; evolution; fecundity; females; fish; males; parentage; polygamy; progeny; reproductive success; sociobiology; transponders; Southeastern United States
Abstract:
... In polygamy, individuals interact in a non-random manner to shape reproductive networks. However, relative importance of behavior versus individual physical traits (e.g., body size) in determining access to partners and reproductive success varies by species and is poorly understood in small-bodied aquatic species for which direct observations are challenging in the wild. Here, we coupled automate ...
DOI:
10.1007/s00265-020-02933-x

13. Dueling frogs: do male green tree frogs (Hyla cinerea) eavesdrop on and assess nearby calling competitors?

Author:
Mark J. Garcia; Andrew Cronin; Tyler Bowling; Hakeem Bushera; Kimberly L. Hunter; Ryan C. Taylor
Source:
Behavioral ecology and sociobiology 2019 v.73 no.2 pp. 21
ISSN:
0340-5443
Subject:
Hyla; body size; breeding sites; decision making; females; frogs; males; phenotypic plasticity
Abstract:
... Individuals produce advertisement signals with intended purposes and targets. However, these signals can be received by “eavesdroppers,” who may extract information from them and alter their behavior according to the extracted information. In anuran systems, males congregate at breeding sites to produce advertisement calls to attract receptive females and fend off rival males. Both sexes directly ...
DOI:
10.1007/s00265-018-2632-1

14. Friend-or-foe? Behavioural evidence suggests interspecific discrimination leading to low probability of hybridization in two coexisting rock lizard species (Lacertidae, Darevskia)

Author:
Eduard A. Galoyan; Elena Yu. Tsellarius; Marine S. Arakelyan
Source:
Behavioral ecology and sociobiology 2019 v.73 no.4 pp. 46
ISSN:
0340-5443
Subject:
Lacertidae; asymmetry; body size; copulation; females; hybridization; lizards; males; mixing; parthenogenesis; probability; secondary contact; sexual selection; social behavior
Abstract:
... The parthenogenetic rock lizard Darevskia rostombekowi is considered to be the product of hybridization between female Darevskia raddei and male Darevskia portschinskii. These two species coexist within several secondary contact areas; however, no trace of their hybridization has been previously reported. We conducted focal observations of individually marked lizards in 2017 and 2018 to establish ...
DOI:
10.1007/s00265-019-2650-7

15. Novel ablation technique shows no sperm priming response by male eastern mosquitofish to cues of female availability

Author:
Meng-Han Joseph Chung; Michael D. Jennions; Rebecca J. Fox
Source:
Behavioral ecology and sociobiology 2019 v.73 no.12 pp. 167
ISSN:
0340-5443
Subject:
Gambusia holbrooki; body size; ecology; females; longevity; males; reproductive success; risk; sociobiology; sperm competition; spermatogenesis; spermatozoa; surgery
Abstract:
... Changes in mate availability and sperm competition should generate selection to adjust investments into different pre- and post-copulatory traits so that the product of mating and fertilization success maximize net male reproductive success. Given costly sperm production and the risk of sperm depletion, males should invest strategically in ejaculates. Here, we use the eastern mosquitofish (Gambusi ...
DOI:
10.1007/s00265-019-2779-4

16. When night never falls: female sexual signalling in a nocturnal insect along a latitudinal gradient

Author:
Anna-Maria Borshagovski; Paulus Saari; Topi K. Lehtonen; Arja Kaitala
Source:
Behavioral ecology and sociobiology 2020 v.74 no.12 pp. 153
ISSN:
0340-5443
Subject:
Lampyris noctiluca; animal communication; body size; color; ecology; evolution; females; geographical distribution; green light; insects; latitude; sociobiology; summer; wavelengths; Finland; Northern European region
Abstract:
... The environment can play an important role in animal communication by affecting signal transmission and detection. Variation in the signalling environment is expected to be especially pronounced in widely distributed species, potentially affecting how their signals are detected. Such environmental variability is presumably relevant for sedentary females of a nocturnal capital breeder, the European ...
DOI:
10.1007/s00265-020-02927-9

17. Association between extra-pair paternity and nestling sex and condition in the barn swallow

Author:
Alessandra Costanzo; Diego Rubolini; Roberto Ambrosini; Manuela Caprioli; Emanuele Gatti; Andrea Romano; Marco Parolini; Luca Gianfranceschi; Nicola Saino
Source:
Behavioral ecology and sociobiology 2018 v.72 no.8 pp. 137
ISSN:
0340-5443
Subject:
Hirundo rustica; body size; daughters; fathers; females; genes; genetic variation; inheritance (genetics); males; nestlings; paternity; phenotype; prediction; probability; sex allocation; sex ratio; sexual selection; siblings; sons
Abstract:
... Parents should differentially allocate resources to the production of offspring of either sex depending on their expected fitness return. In sexually promiscuous females, offspring sex ratio should be affected by the sexual attractiveness of biological fathers because sons, but not daughters, will benefit from inheriting genes for sexual attractiveness. Females may acquire benefits for the offspri ...
DOI:
10.1007/s00265-018-2552-0

18. Body size and lifespan are condition dependent in the mealworm beetle, Tenebrio molitor, but not sexually selected traits

Author:
Murray W. McConnell; Kevin A. Judge
Source:
Behavioral ecology and sociobiology 2018 v.72 no.3 pp. 32
ISSN:
0340-5443
Subject:
Tenebrio molitor; adults; body size; diet; fecundity; females; larvae; life history; longevity; males; phenotype; pheromones; prediction; rearing; resource allocation; sexual selection
Abstract:
... Traits under strong directional selection are predicted to be condition dependent and thus increase in development when an organism acquires more resources. This prediction has been tested for a variety of traits, particularly those under precopulatory sexual selection. However, few studies compare the condition dependence of a variety of phenotypic traits, potentially subject to different selecti ...
DOI:
10.1007/s00265-018-2444-3

19. Predictors of nest growth: diminishing returns for subordinates in the paper wasp Polistes dominula

Author:
Lena Grinsted; Jeremy Field
Source:
Behavioral ecology and sociobiology 2018 v.72 no.6 pp. 88
ISSN:
0340-5443
Subject:
Polistes dominula; animals; body size; breeding; females; genetic relationships; group size; nesting; nests; paper wasps
Abstract:
... In cooperative breeders, subordinates that have alternative reproductive options are expected to stay and help dominant breeders only as long as they contribute to group productivity, if their fitness is linked with colony success. Female Polistes dominula paper wasps live as cooperative breeders in small groups of typically fewer than 10 females. Subordinates tend to have high-quality outside opt ...
DOI:
10.1007/s00265-018-2502-x
PubMed:
29773925
PubMed Central:
PMC5945790

20. Spatial and temporal variation in three call traits and preferences of the tree cricket Oecanthus forbesi

Author:
L. B. Symes
Source:
Behavioral ecology and sociobiology 2018 v.72 no.3 pp. 35
ISSN:
0340-5443
Subject:
Oecanthus; animals; body size; females; heart rate; insect communication; legs; males; mating behavior; reproductive isolation; temporal variation
Abstract:
... Multiple selective forces act on the evolution of mating preferences. While mating preferences are central to pre-zygotic isolation, certain preferences and traits may make greater contributions. For some traits, females may exhibit preferences, but accept heterospecifics trait values when preferred values are scarce. For other traits, females may fail to reproduce before accepting heterospecifics ...
DOI:
10.1007/s00265-018-2442-5

21. Variation in habitat management alters risk aversion behavior in lizards

Author:
Lance D. McBrayer; Seth E. Parker
Source:
Behavioral ecology and sociobiology 2018 v.72 no.9 pp. 149
ISSN:
0340-5443
Subject:
Pinus palustris; Sceloporus woodi; body size; breeding season; clearcutting; females; flight; habitat conservation; habitats; hindlimbs; humans; indigenous species; lizards; males; microclimate; phenotype; population density; predation; predator avoidance; prescribed burning; risk; shrublands; shrubs; temperature; trees; Florida
Abstract:
... Habitat management can generate variation in a cascade of organismal traits linked to the environment, particularly in small, endemic species such as the Florida scrub lizard (Sceloporus woodi). For example, reduction of arboreal perches through clear-cutting in managed Florida scrub may alter lizard behavior, and predation risk, which in turn, may alter lizard abundance. We ask whether risk avers ...
DOI:
10.1007/s00265-018-2567-6

22. The high-output singing displays of a lekking bat encode information on body size and individual identity

Author:
Cory A. Toth; Stuart Parsons
Source:
Behavioral ecology and sociobiology 2018 v.72 no.7 pp. 102
ISSN:
0340-5443
Subject:
Chiroptera; Passeriformes; arms (limbs); birds; body size; courtship; females; lekking; males; sexual selection; vocalization
Abstract:
... A growing body of research suggests that songs are an important part of the courtship behavior of many bat species, however there is little information on the basic characteristics of these vocalizations, or how they may function as a courtship signal. Lekking male lesser short-tailed bats (Mystacina tuberculata) appear to use vocal displays as a primary method for attracting mates, but it is uncl ...
DOI:
10.1007/s00265-018-2496-4

23. The relative importance of body size and UV coloration in influencing male-male competition in a lacertid lizard

Author:
Gabrielle Names; Mélissa Martin; Arnaud Badiane; Jean-François Le Galliard
Source:
Behavioral ecology and sociobiology 2019 v.73 no.7 pp. 98
ISSN:
0340-5443
Subject:
Podarcis muralis; adults; aggression; body size; color; females; intraspecific competition; juveniles; males; models; phenotypic correlation; prediction; reflectance; wall lizards
Abstract:
... Communication via color signals is common in natural systems. Ultraviolet (UV)-blue patches located on the outer-ventral scales of some lacertid lizards are thought to be involved in male-male competition. However, the mechanisms that maintain their honesty remain unknown. Here, we use the common wall lizard Podarcis muralis to test whether the lateral UV-blue spots are conventional signals, the h ...
DOI:
10.1007/s00265-019-2710-z

24. The role of male coloration and ornamentation in potential alternative mating strategies of the dimorphic jumping spider, Maevia inclemens

Author:
Laurel B. Lietzenmayer; David L. Clark; Lisa A. Taylor
Source:
Behavioral ecology and sociobiology 2019 v.73 no.6 pp. 83
ISSN:
0340-5443
Subject:
Salticidae; aggression; antipredatory behavior; aposematic species; body size; cannibalism; color; courtship; dimorphism; females; head; legs; males; morphs; predation; reproductive success; risk; sexual selection; vertebrates
Abstract:
... Polymorphism can arise across taxa due to various selection pressures and potentially lead to alternative mating or antipredator strategies. For male jumping spiders, sexual selection and predation risk are often intertwined when courting cannibalistic females and may be a driving factor in the polymorphism of the jumping spider, Maevia inclemens. The dimorphic males of M. inclemens differ dramati ...
DOI:
10.1007/s00265-019-2691-y

25. Are aggressive vocalizations the honest signals of body size and quality in female Asian particoloured bats?

Author:
Xin Zhao; Tinglei Jiang; Hao Gu; Heng Liu; Congnan Sun; Ying Liu; Jiang Feng
Source:
Behavioral ecology and sociobiology 2018 v.72 no.6 pp. 96
ISSN:
0340-5443
Subject:
Chiroptera; animals; arms (limbs); bioacoustics; body size; correlation; death; evolution; females; immune response; reproduction; vocalization
Abstract:
... Animals make calls to give conspecifics information about themselves. Based on these calls, the receiver makes decisions that affect survival and reproduction. However, not all of the signals are reliable. Honest signals are either costly to produce or are constrained by physical or physiological factors that cannot be faked. Aggressive calls during antagonistic interactions are both costly and co ...
DOI:
10.1007/s00265-018-2510-x

26. On the role of body size, brain size, and eye size in visual acuity

Author:
Alberto Corral-López; Maddi Garate-Olaizola; Severine D. Buechel; Niclas Kolm; Alexander Kotrschal
Source:
Behavioral ecology and sociobiology 2017 v.71 no.12 pp. 179
ISSN:
0340-5443
Subject:
Poecilia reticulata; animal behavior; body size; brain; evolution; eyes; females; learning; males; mating behavior; vision
Abstract:
... The visual system is highly variable across species, and such variability is a key factor influencing animal behavior. Variation in the visual system, for instance, can influence the outcome of learning tasks when visual stimuli are used. We illustrate this issue in guppies (Poecilia reticulata) artificially selected for large and small relative brain size with pronounced behavioral differences in ...
DOI:
10.1007/s00265-017-2408-z
PubMed:
29213179
PubMed Central:
PMC5705735

27. Sexual selection by the seashore: the roles of body size and weaponry in mate choice and competition in the maritime earwig (Anisolabis maritima)

Author:
Jessica M. Kendall-Bar; Vikram K. Iyengar
Source:
Behavioral ecology and sociobiology 2017 v.71 no.1 pp. 8
ISSN:
0340-5443
Subject:
Anisolabis maritima; aggression; asymmetry; body size; females; insects; males; mating behavior; mating systems; phenotype; sexual dimorphism; sexual selection
Abstract:
... The spatial distribution of organisms can provide insight into their mating systems, either revealing mating preferences (intersexual selection for ornaments), competition for mates (intrasexual selection for armaments), or both. Teasing apart the relative contributions of these selective forces is a critical step in understanding mating systems, particularly given the potential combinations and c ...
DOI:
10.1007/s00265-016-2233-9

28. Caste differences in the mushroom bodies of swarm-founding paper wasps: implications for brain plasticity and brain evolution (Vespidae, Epiponini)

Author:
Sean O’Donnell; Susan J. Bulova; Sara DeLeon; Meghan Barrett; Katherine Fiocca
Source:
Behavioral ecology and sociobiology 2017 v.71 no.8 pp. 116
ISSN:
0340-5443
Subject:
Vespidae; body size; calyx; caste determination; cognition; females; forage; insect castes; memory; models; mushroom bodies; nests; neuroplasticity; paper wasps; phylogeny; social dominance; social insects
Abstract:
... Eusocial insect reproductive castes (in Hymenoptera, female reproductive queens and sterile workers) differ dramatically in behavior. Castes may differ in the cognitive demands that affect patterns of brain tissue investment. Queens and workers diverge most strongly in the advanced eusocial, or swarm-founding species, where queens do not forage and rarely leave their nests. We asked whether reprod ...
DOI:
10.1007/s00265-017-2344-y

29. How solitary are white sharks: social interactions or just spatial proximity?

Author:
R. Findlay; E. Gennari; M. Cantor; D. P. Tittensor
Source:
Behavioral ecology and sociobiology 2016 v.70 no.10 pp. 1735-1744
ISSN:
0340-5443
Subject:
Carcharodon carcharias; body size; females; food choices; juveniles; ontogeny; philopatry; predators; sharks; social behavior; whales; South Africa
Abstract:
... White sharks (Carcharodon carcharias) are circumglobally distributed large apex predators. While ecologically important, there is very limited study of their social behaviour. Although evident in other large, apex marine predators (e.g. toothed whales) and smaller elasmobranchs (e.g. blacktip reef sharks), the ability of any large pelagic elasmobranch to demonstrate social preferences, tolerance o ...
DOI:
10.1007/s00265-016-2179-y

30. Importance of weapon size in all stages of male–male contests in the hermit crab Pagurus minutus

Author:
Chiaki I. Yasuda; Tsunenori Koga
Source:
Behavioral ecology and sociobiology 2016 v.70 no.12 pp. 2175-2183
ISSN:
0340-5443
Subject:
body size; crabs; females; males
Abstract:
... Physical traits such as body size and weapon size typically reflect an individual’s resource holding potential (RHP). During male–male contests, contestants use these traits to assess their own and their opponent’s RHP. However, the advertisement of RHP does not always predict contest outcome. Here, we examined whether assessment index (body size or weapon size [major cheliped size]) and assessmen ...
DOI:
10.1007/s00265-016-2221-0

31. Increased pheromone signaling by small male sea lamprey has distinct effects on female mate search and courtship

Author:
Tyler J. Buchinger; Ugo Bussy; Ethan G. Buchinger; Skye D. Fissette; Weiming Li; Nicholas S. Johnson
Source:
Behavioral ecology and sociobiology 2017 v.71 no.10 pp. 155
ISSN:
0340-5443
Subject:
Petromyzon marinus; animals; body size; courtship; females; liver; males; nests; odors; pheromones; streams
Abstract:
... Male body size affects access to mates in many animals. Attributes of sexual signals often correlate with body size due to physiological constraints on signal production. Larger males generally produce larger signals, but costs of being large or compensation by small males can result in smaller males producing signals of equal or greater magnitude. Female choice following multiple male traits with ...
DOI:
10.1007/s00265-017-2384-3

32. Maternal manipulation of pollen provisions affects worker production in a small carpenter bee

Author:
Sarah P. Lawson; Krista N. Ciaccio; Sandra M. Rehan
Source:
Behavioral ecology and sociobiology 2016 v.70 no.11 pp. 1891-1900
ISSN:
0340-5443
Subject:
Apoidea; Ceratina calcarata; adults; body size; brood cells; carpenter bees; daughters; evolution; females; labor; mothers; pollen; protein content; quality control; sex allocation; siblings
Abstract:
... Mothers play a key role in determining the body size, behavior, and fitness of offspring. Mothers of the small carpenter bee, Ceratina calcarata, provide smaller pollen balls to their first female offspring resulting in the development of a smaller female. This smaller female, known as the dwarf eldest daughter, is coerced to stay at the nest to forage and feed siblings as a worker. In order to be ...
DOI:
10.1007/s00265-016-2194-z

33. Sexual segregation when foraging in an extremely social killer whale population

Author:
Amber Beerman; Erin Ashe; Katharine Preedy; Rob Williams
Source:
Behavioral ecology and sociobiology 2016 v.70 no.1 pp. 189-198
ISSN:
0340-5443
Subject:
Orcinus orca; adults; alloparental behavior; animal behavior; body size; diet; ecotypes; females; foraging; gender differences; habitats; males; mammals; philopatry; sexual dimorphism; social behavior; society; Pacific Ocean
Abstract:
... Resident, fish-eating killer whales in the northeastern Pacific Ocean live in multi-generational matrilines containing both sexes. The degree of maternal fidelity and natal philopatry in this killer whale society is extreme even by the standards of lions, elephants or any highly social mammal. Benefits of group living include cooperative foraging and alloparental care, but few studies have explore ...
DOI:
10.1007/s00265-015-2038-2

34. Age- and sex-specific variations in microhabitat and macrohabitat use in a territorial lizard

Author:
David M. Delaney; Daniel A. Warner
Source:
Behavioral ecology and sociobiology 2016 v.70 no.6 pp. 981-991
ISSN:
0340-5443
Subject:
Anolis; adults; age structure; body size; breeding season; community structure; females; habitat preferences; interspecific variation; juveniles; landscapes; lizards; males; microhabitats; winter
Abstract:
... Animals should select microhabitats with features that enhance fitness. However, the fitness benefits of different habitats may vary across ages and between sexes. By quantifying microhabitat choice in relation to age or sex, as well as the specific fitness consequences of habitat selection, we can better understand the factors that shape the way organisms distribute themselves across landscapes. ...
DOI:
10.1007/s00265-016-2121-3

35. Context-dependent evaluation of prospective mates in a fish

Author:
Lisa Locatello; Federica Poli; Maria B. Rasotto
Source:
Behavioral ecology and sociobiology 2015 v.69 no.7 pp. 1119-1126
ISSN:
0340-5443
Subject:
Salaria pavo; body size; females; fish
Abstract:
... Female choice is often assumed to be based on absolute preference, driven by a threshold value of mate attractiveness. However, increasing evidence suggests that females may instead perform a comparative evaluation of prospective mates, possibly incurring in violation of rational decision rules (e.g. independence from irrelevant alternative, IIA). A prototypical case is the ‘asymmetrically dominat ...
DOI:
10.1007/s00265-015-1924-y
PubMed:
26097281
PubMed Central:
PMC4464600

36. Effects of nest predation risk on female incubation behavior and offspring growth in great tits

Author:
Alessandra Basso; Heinz Richner
Source:
Behavioral ecology and sociobiology 2015 v.69 no.6 pp. 977-989
ISSN:
0340-5443
Subject:
Mustela erminea; Parus major; antipredatory behavior; birds; body size; eggs; embryogenesis; evolution; females; hatching; life history; long term effects; males; models; nestlings; nests; predation; predators; progeny; risk; weight control
Abstract:
... Predation risk is a key driver for the evolution of reproductive strategies and life history traits. In birds, incubation behavior represents one form of parental care where trade-offs between time spent in incubation activities and self-maintenance activities are likely to change in response to predator pressure. This can have strong effects on embryonic development, but is still poorly understoo ...
DOI:
10.1007/s00265-015-1910-4

37. Intraspecific and interspecific competition for mates: Rana temporaria males are effective satyrs of Rana dalmatina females

Author:
Balázs Vági; Attila Hettyey
Source:
Behavioral ecology and sociobiology 2016 v.70 no.9 pp. 1477-1484
ISSN:
0340-5443
Subject:
Rana temporaria; amphibians; body size; breeding; breeding season; extinction; females; interspecific competition; interspecific variation; intraspecific competition; males; reproductive performance; reproductive success; space and time
Abstract:
... Reproductive interference can seriously affect the reproductive success of involved individuals and may lead to local exclusion of the competitively inferior species. The components of male competitiveness in direct bodily fights for females have been studied rarely in a heterospecific context. In explosively breeding anuran amphibians, males are often coercive and indiscriminate, which frequently ...
DOI:
10.1007/s00265-016-2156-5

38. Male mate choice and female receptivity lead to reproductive interference

Author:
Jennifer A. Hamel; Savannah A. Nease; Christine W. Miller
Source:
Behavioral ecology and sociobiology 2015 v.69 no.6 pp. 951-956
ISSN:
0340-5443
Subject:
Anasa andresii; Anasa tristis; body size; females; insects; males; mating behavior; Florida
Abstract:
... Mating between species is common, but seldom adaptive. Mate preferences and receptivity to mating attempts may both contribute to such matings, also called reproductive interference. Here, we tested the hypothesis that both male mate preference for female body size and female receptivity contribute to reproductive interference between two secondarily sympatric insect species. In north-central Flor ...
DOI:
10.1007/s00265-015-1907-z

39. Mate choice and male–male competition among morphologically cryptic but genetically divergent amphipod lineages

Author:
Matthias Galipaud; Zoé Gauthey; Jérémie Turlin; Loïc Bollache; Clément Lagrue
Source:
Behavioral ecology and sociobiology 2015 v.69 no.12 pp. 1907-1916
ISSN:
0340-5443
Subject:
Gammarus fossarum; assortative mating; body size; fecundity; females; genetic variation; hybridization; males; mating behavior; reproductive isolation; secondary contact
Abstract:
... Mate preference for conspecifics does not necessarily lead to assortative mating in cases where mating outcomes also depend on preferences based on mate quality and on individual competitiveness. We tested how such traits affected mate choice among genetically divergent lineages (called molecular operational taxonomic units; MOTU) of the amphipod Gammarus fossarum. We presented males with two fema ...
DOI:
10.1007/s00265-015-2003-0

40. Messages conveyed by assorted facets of the dewlap, in both sexes of Anolis sagrei

Author:
Tess Driessens; Katleen Huyghe; Bieke Vanhooydonck; Raoul Van Damme
Source:
Behavioral ecology and sociobiology 2015 v.69 no.8 pp. 1251-1264
ISSN:
0340-5443
Subject:
Anolis; aggression; body condition; body size; color; correlation; courtship; females; immune response; lizards; males; socioeconomic status
Abstract:
... Dewlaps of Anolis lizards are complex multicomponent signaling devices that have been intensively studied. Yet, the functions and multiple messages conveyed by the dewlap remain largely unknown. Here, we assess some aspects of sexual identity, individual quality, and social status that may be signaled by the dewlap in both sexes of Anolis sagrei. In addition, we investigate whether diverse facets ...
DOI:
10.1007/s00265-015-1938-5

41. Size dependence of courtship effort may promote male choice and strong assortative mating in soldier beetles

Author:
Denson K. McLain; Ann E. Pratt; Donald J. Shure
Source:
Behavioral ecology and sociobiology 2015 v.69 no.6 pp. 883-894
ISSN:
0340-5443
Subject:
Chauliognathus pennsylvanicus; assortative mating; body size; copulation; courtship; fecundity; females; males
Abstract:
... Large males of the soldier beetle, Chauliognathus pennsylvanicus (Cantharidae), exercise choice for larger females in the field and laboratory. The length of copulation limits the maximum mating rate to once per day. This may afford more competitive males the opportunity to reject females early in the day without significantly reducing their mating rate. Males copulate if they secure evasive femal ...
DOI:
10.1007/s00265-015-1900-6

42. Territorial competition and the evolutionary loss of sexual size dimorphism

Author:
Ulrike Odreitz; Kristina M. Sefc
Source:
Behavioral ecology and sociobiology 2015 v.69 no.4 pp. 593-601
ISSN:
0340-5443
Subject:
Tropheus; agonistic behavior; body size; correlation; ecology; evolution; females; individual feeding; male effect; males; phenotype; prediction; probability; sexual dimorphism; territoriality
Abstract:
... Non-sexual social selection can underlie the evolution of sexually monomorphic phenotypes. A causal relationship between territorial competition and sexual monomorphism predicts that male and female competitors should employ similar contest behavior and that contest outcome should depend on the same traits in males and females. We test this prediction in a sexually monomorphic cichlid fish of the ...
DOI:
10.1007/s00265-014-1870-0
PubMed:
25798023
PubMed Central:
PMC4359285

43. Filial cannibalism in a nest-guarding fish: females prefer to spawn in nests with few eggs over many

Author:
Maria Norevik Andrén; Charlotta Kvarnemo
Source:
Behavioral ecology and sociobiology 2014 v.68 no.10 pp. 1565-1576
ISSN:
0340-5443
Subject:
Pomatoschistus minutus; body size; cannibalism; courtship; data collection; eggs; fecundity; females; fish; males; nests; risk; spawning
Abstract:
... In fish, fecundity correlates with female body size and egg-tending males often eat small broods. Therefore, small females may prefer to spawn in nests that already contain many eggs, to ensure the brood is as large as possible. In contrast, large females may prefer nests with few eggs, if high egg number or density has a negative effect on egg survival, or if there are drawbacks of spawning last ...
DOI:
10.1007/s00265-014-1766-z

44. Pairing patterns in relation to body size, genetic similarity and multilocus heterozygosity in a tropical monogamous bird species

Author:
Aurélie Quinard; François-Xavier Dechaume-Moncharmont; Frank Cézilly
Source:
Behavioral ecology and sociobiology 2014 v.68 no.10 pp. 1723-1731
ISSN:
0340-5443
Subject:
Zenaida aurita; assortative mating; body size; doves; females; heterozygosity; males; mating behavior; microsatellite repeats; socioeconomic status; territoriality
Abstract:
... The relative influence of genetic and phenotypic quality on pairing status and mating patterns in socially monogamous species remains poorly documented. We studied social status and pairing patterns in relation to genetic similarity and multilocus heterozygosity (MLH) estimates from 11 microsatellite markers, and both tarsus length and wing chord (as a measure of competitive ability in territorial ...
DOI:
10.1007/s00265-014-1780-1

45. Previous mating experience increases fighting success during male-male contests in the hermit crab Pagurus nigrofascia

Author:
Chiaki I. Yasuda; Kento Matsuo; Satoshi Wada
Source:
Behavioral ecology and sociobiology 2015 v.69 no.8 pp. 1287-1292
ISSN:
0340-5443
Subject:
body size; copulation; crabs; females; males; molting; probability
Abstract:
... Prior social experience often affects subsequent competitive interactions and their outcomes. Although the effects of prior contest experience have been widely examined, effects of mating experience remain less well examined. We examined, in males of the hermit crab Pagurus nigrofascia, whether males successively copulated with more than one female and whether males with copulation experience diff ...
DOI:
10.1007/s00265-015-1941-x

46. “Armpit effect” in an African cichlid fish: self-referent kin recognition in mating decisions of male Pelvicachromis taeniatus

Author:
Timo Thünken; Theo C. M. Bakker; Sebastian A. Baldauf
Source:
Behavioral ecology and sociobiology 2014 v.68 no.1 pp. 99-104
ISSN:
0340-5443
Subject:
Cichlidae; adults; body size; breeding sites; brood rearing; eggs; evolution; females; inbreeding; kin recognition; learning; males; phenotype; sisters; Western Africa
Abstract:
... Kin discrimination in nepotistic as well as in sexual contexts is widespread in animals including humans. However, the underlying mechanisms of kin discrimination are assumed to vary between species and—within species—between contexts. During solitary life stages, kin recognition based on social learning is assumed to be less reliable because kin templates that are not continuously updated may get ...
DOI:
10.1007/s00265-013-1626-2

47. Forced copulation as a conditional alternative strategy in camel crickets

Author:
Lauren P. Conroy; David A. Gray
Source:
Behavioral ecology and sociobiology 2014 v.68 no.9 pp. 1431-1439
ISSN:
0340-5443
Subject:
Orthoptera; animals; body size; copulation; courtship; diet; females; males; nutritional adequacy
Abstract:
... In the animal kingdom, males typically acquire reproductive access to females through courtship, nuptial gifts, or combat. In many species, small or poor-condition males that are unable to produce an attractive display, proffer an adequate mating gift, or dominate in male–male competition may resort to forced copulation. Forced copulation has been previously demonstrated in the camel cricket Prist ...
DOI:
10.1007/s00265-014-1750-7

48. Nitrate affects courting and breathing but not escape performance in adult newts

Author:
J. Secondi; V. Lepetz; G. Cossard; S. Sourice
Source:
Behavioral ecology and sociobiology 2013 v.67 no.11 pp. 1757-1765
ISSN:
0340-5443
Subject:
adults; anaerobiosis; body size; breathing; breeding; courtship; females; males; oxygen; pollution; population characteristics; predation; risk; salamanders and newts; sexual selection; steroid metabolism
Abstract:
... The increasing spread of contaminants in the environment affects the behaviour of individuals and can be predicted to modify population characteristics in the long run. It is thus crucial to investigate the effect of contaminants on fitness-related traits. Nitrate is a major pollutant that disrupts oxygen fixation and steroid metabolism and is expected to affect adult behaviour. In water breeding ...
DOI:
10.1007/s00265-013-1583-9

49. Polyandry and paternity in a wild population of the swordtail Xiphophorus nigrensis

Author:
Chad C. Smith
Source:
Behavioral ecology and sociobiology 2014 v.68 no.3 pp. 415-424
ISSN:
0340-5443
Subject:
Xiphophorus; body size; females; genetic techniques and protocols; males; paternity; polyandry; progeny; sexual selection
Abstract:
... Genetic analyses of parentage provide crucial information about the prevalence of polyandry and the potential for sexual selection to operate in wild populations. In the swordtail Xiphophorus nigrensis, large males are thought to have a competitive advantage due to their superiority in male–male contests and attractiveness to females, who are presumed to mate multiply. I examined the distribution ...
DOI:
10.1007/s00265-013-1655-x

50. Selection for early emergence, longevity and large body size in wingless, sib-mating ant males

Author:
Ilka M. Kureck; Beate Nicolai; Susanne Foitzik
Source:
Behavioral ecology and sociobiology 2013 v.67 no.8 pp. 1369-1377
ISSN:
0340-5443
Subject:
body size; females; longevity; males; nests; sexual selection; spermatozoa
Abstract:
... Sexual selection has led to male morphologies and behaviours that either increase male attractiveness or their success in male–male competition. We investigated male traits under selection in the ant Hypoponera opacior, in which wingless males mate with pupal queens inside their natal colony and guard their partners for hours. The lack of female choice and fights among adult males makes this speci ...
DOI:
10.1007/s00265-013-1566-x

51. Sex- and performance-based escape behaviour in an Asian agamid lizard, Phrynocephalus vlangalii

Author:
Yin Qi; Daniel W. A. Noble; Yayong Wu; Martin J. Whiting
Source:
Behavioral ecology and sociobiology 2014 v.68 no.12 pp. 2035-2042
ISSN:
0340-5443
Subject:
body size; escape behavior; females; flight; lizards; males; probability; tail; testosterone
Abstract:
... In lizards, males are predicted to sprint faster and run for longer than females by virtue of higher testosterone levels and differences in morphology. Consequently, escape behaviour is also predicted to be associated with sex and locomotor performance, yet these links have rarely been explored. Here, we tested whether escape behaviour is associated with locomotor performance in the toad-headed ag ...
DOI:
10.1007/s00265-014-1809-5

52. Weapons or mating signals? Claw shape and mate choice in a fiddler crab

Author:
Sophia Callander; Andrew T. Kahn; Tim Maricic; Michael D. Jennions; Patricia R. Y. Backwell
Source:
Behavioral ecology and sociobiology 2013 v.67 no.7 pp. 1163-1167
ISSN:
0340-5443
Subject:
body size; claws; courtship; crabs; females; males; sexual selection
Abstract:
... Males often possess traits, such as horns, claws, and tusks, which are used during male–male combat. Studies suggest that selection has fine tuned these weapons to improve their effectiveness and that the shape of these weapons provides cues for males to assess the strength of rivals. Similarly, females might also assess a male’s weaponry to determine his value as a mate. The largest weapon relati ...
DOI:
10.1007/s00265-013-1541-6

53. The nature of the migration route shapes physiological traits and aerodynamic properties in a migratory songbird

Author:
Anna-Marie Corman; Franz Bairlein; Heiko Schmaljohann
Source:
Behavioral ecology and sociobiology 2014 v.68 no.3 pp. 391-402
ISSN:
0340-5443
Subject:
Oenanthe oenanthe; body size; females; flight; foraging; migratory behavior; songbirds; wings; Canada; Greenland; Iceland; North Sea
Abstract:
... Migration distance is supposed to represent an important selection pressure shaping physiological and morphological properties. Previous work has focussed on this effect, while the importance of ecological barriers in this context has been rarely considered. We studied two subspecies of a migratory songbird, the northern wheatear (Oenanthe oenanthe oenanthe and O. o. leucorhoa L.), on an island in ...
DOI:
10.1007/s00265-013-1653-z

54. Competitive females are successful females; phenotype, mechanism, and selection in a common songbird

Author:
Kristal E. Cain; Ellen D. Ketterson
Source:
Behavioral ecology and sociobiology 2012 v.66 no.2 pp. 241-252
ISSN:
0340-5443
Subject:
Junco hyemalis; body size; females; gonadotropin-releasing hormone; males; phenotype; physiological response; selection response; songbirds; testosterone
Abstract:
... In a variety of taxa, male reproductive success is positively related to the expression of costly traits such as large body size, ornaments, armaments, and aggression. These traits are thought to improve male competitive ability and, thus, access to limited reproductive resources. Females of many species also express competitive traits. However, we know very little about the consequences of indivi ...
DOI:
10.1007/s00265-011-1272-5
PubMed:
22345899
PubMed Central:
PMC3278083

55. Consequences of paternal care on pectoral fin allometry in a desert-dwelling fish

Author:
Emile van Lieshout; P. Andreas Svensson; Bob B. M. Wong
Source:
Behavioral ecology and sociobiology 2013 v.67 no.3 pp. 513-518
ISSN:
0340-5443
Subject:
Gobiidae; allometry; anaerobic conditions; body size; females; fins; fish; head; males; sexual dimorphism; sexual selection
Abstract:
... Positive static allometry is a scaling relationship where the relative size of traits covaries with adult body size. Traditionally, positive allometry is thought to result from either altered physiological requirements at larger body size or from strongly condition-dependent allocation under sexual selection. Yet, there are no theoretical reasons why positive allometry cannot evolve in fitness-rel ...
DOI:
10.1007/s00265-012-1470-9

56. Does mating experience of male house crickets affect their behavior to subsequent females and female choice?

Author:
Paweł Ręk
Source:
Behavioral ecology and sociobiology 2012 v.66 no.12 pp. 1629-1637
ISSN:
0340-5443
Subject:
Acheta domesticus; aggression; body size; courtship; females; males
Abstract:
... Male mating experience was shown to play an important role in settling conflicts between males; however, little is known about whether and how prior access to females influences male behavior during intersexual interactions and female choice itself. Here, I experimentally test this relationship in the house cricket (Acheta domesticus) by combining one-on-one interaction between the male and female ...
DOI:
10.1007/s00265-012-1418-0
PubMed:
23162206
PubMed Central:
PMC3496475

57. Dominance, not kinship, determines individual position within the communal roosts of a cooperatively breeding bird

Author:
Clare J. Napper; Stuart P. Sharp; Andrew McGowan; Michelle Simeoni; Ben J. Hatchwell
Source:
Behavioral ecology and sociobiology 2013 v.67 no.12 pp. 2029-2039
ISSN:
0340-5443
Subject:
birds; body size; evolution; females; flocks; heat; kin selection; kinship; males; sex ratio
Abstract:
... Kin selection has played an important role in the evolution and maintenance of cooperative breeding behaviour in many bird species. However, although relatedness has been shown to affect the investment decisions of helpers in such systems, less is known about the role that kin discrimination plays in other contexts, such as communal roosting. Individuals that roost communally benefit from reduced ...
DOI:
10.1007/s00265-013-1613-7

58. Evolution of mating systems and sexual size dimorphism in North American cyprinids

Author:
M. Pyron; T. E. Pitcher; S. J. Jacquemin
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 747-756
ISSN:
0340-5443
Subject:
Cyprinidae; body size; dimorphism; females; fish; males; mating systems; models; phylogeny; spawning; sperm competition; testes
Abstract:
... Mating systems evolve with sexual size dimorphism (SSD) in many animals. Mating systems with males larger than females occur when males compete for female access or guard territories, while mating systems with group mating tend to occur in species where females are the same size or larger than males. In addition to variation in SSD with mating system, sperm competition varies among mating systems ...
DOI:
10.1007/s00265-013-1498-5

59. Experience affects mating behavior, but does not impact parental reproductive allocation in a lizard

Author:
Daniel A. Warner; Clint D. Kelly; Matthew B. Lovern
Source:
Behavioral ecology and sociobiology 2013 v.67 no.6 pp. 973-983
ISSN:
0340-5443
Subject:
Anolis; body size; eggs; females; lizards; males; mating behavior; paternal effect; spermatozoa; steroids
Abstract:
... Investment into reproduction is influenced by multiple factors and varies substantially between males and females. Theory predicts that males should adjust their ejaculate size or quality in response to variation in female experience or phenotypic quality. In addition, sperm investment by males may also be influenced by their own status and experience. Although such adjustments of male ejaculate s ...
DOI:
10.1007/s00265-013-1523-8

60. Females prefer males with superior fighting abilities but avoid sexually harassing winners when eavesdropping on male fights

Author:
David Bierbach; Vanessa Sassmannshausen; Bruno Streit; Lenin Arias-Rodriguez; Martin Plath
Source:
Behavioral ecology and sociobiology 2013 v.67 no.4 pp. 675-683
ISSN:
0340-5443
Subject:
Poecilia; body size; females; fish; males; sexual behavior
Abstract:
... Selection imposed by male competition (intrasexual selection) and female choice (intersexual selection) can be con- or discordant. Specifically, females may or may not prefer mating with dominant males, and direct costs of interacting with dominant (and possibly more harassing) males have been suggested to explain avoidance of dominant males. Here, we exemplify that inter- and intrasexual selectio ...
DOI:
10.1007/s00265-013-1487-8

61. Foundress polyphenism and the origins of eusociality in a facultatively eusocial sweat bee, Megalopta genalis (Halictidae)

Author:
Karen M. Kapheim; Adam R. Smith; Peter Nonacs; William T. Wcislo; Robert K. Wayne
Source:
Behavioral ecology and sociobiology 2013 v.67 no.2 pp. 331-340
ISSN:
0340-5443
Subject:
Megalopta genalis; adulthood; body size; evolution; experimental design; females; insect colonies; insects; life history; nests; phenotype; progeny
Abstract:
... The reproductive (queen) and nonreproductive (worker) castes of eusocial insect colonies are a classic example of insect polyphenism. A complementary polyphenism may also exist entirely among females in the reproductive caste. Although less studied, reproductive females may vary in behavior based on size-associated attributes leading to the production of daughter workers. We studied a bee with fle ...
DOI:
10.1007/s00265-012-1453-x

62. Multiple signals in the palmate newt: ornaments help when courting

Author:
Jérémie H. Cornuau; Margaux Rat; Dirk S. Schmeller; Adeline Loyau
Source:
Behavioral ecology and sociobiology 2012 v.66 no.7 pp. 1045-1055
ISSN:
0340-5443
Subject:
body size; courtship; females; males; salamanders and newts; spermatozoa; tail
Abstract:
... There is increasing evidence that female mate choice is often based on the assessment of multiple male traits, involving both morphology and behavior. We investigated female mate choice for multiple male traits in the palmate newt, Lissotriton helveticus, including male tail filament length, hind foot web size, crest development, body size, ventral coloration, and courtship display activity. Obser ...
DOI:
10.1007/s00265-012-1355-y

63. Reproductive competition and fecal testosterone in wild male giant pandas (Ailuropoda melanoleuca)

Author:
Yonggang Nie; Ronald R. Swaisgood; Zejun Zhang; Xiaobin Liu; Fuwen Wei
Source:
Behavioral ecology and sociobiology 2012 v.66 no.5 pp. 721-730
ISSN:
0340-5443
Subject:
Ailuropoda melanoleuca; aggression; body size; ecology; females; foraging; nutrition; radio frequency identification; testosterone
Abstract:
... The giant panda (Ailuropoda melanoleuca) is notoriously difficult to study in the wild, but its interesting reproductive ecology makes the effort worthwhile. Perhaps more than most species, the panda is energy-limited, which alters the cost/benefit analysis of its reproductive ecology. Using global positioning system/very high frequency radiocollars to locate mating aggregations, we used behaviora ...
DOI:
10.1007/s00265-012-1320-9

64. Is sexual monomorphism a predictor of polygynandry? Evidence from a social mammal, the collared peccary

Author:
Jennifer D. Cooper; Peter M. Waser; Eric C. Hellgren; Timothy M. Gabor; J. A. DeWoody
Source:
Behavioral ecology and sociobiology 2011 v.65 no.4 pp. 775-785
ISSN:
0340-5443
Subject:
ungulates; Suidae; sires; evolution; herds; Pecari tajacu; males; sexual dimorphism; body size; progeny; parentage; females; adults; prediction
Abstract:
... Sexual dimorphism is common in polygynous species, and there is clear evidence that both intra-sexual competition and female preferences can drive the evolution of large body size in males. In contrast, sexual monomorphism is often argued to reflect a relaxation of male mate competition or an intensification of resource competition among females. Alternatively, it might imply opportunities for fem ...
DOI:
10.1007/s00265-010-1081-2

65. Maternal effects on begging behaviour: an experimental demonstration of the effects of laying sequence, hatch order, nestling sex and brood size

Author:
Amanda J. Gilby; Enrico Sorato; Simon C. Griffith
Source:
Behavioral ecology and sociobiology 2012 v.66 no.11 pp. 1519-1529
ISSN:
0340-5443
Subject:
body size; chicks; eggs; females; hatching; maternal effect; progeny; siblings
Abstract:
... Differential resource allocation by females across the laying sequence has been hypothesised as a mechanism through which females could either compensate nestlings that hatch last in asynchronous broods or promote brood reduction. In this study we artificially incubated eggs and cross-fostered offspring to manipulate nestlings’ position in the hatching order, to identify whether the competitive ab ...
DOI:
10.1007/s00265-012-1407-3

66. Sex-specific plasticity in brain morphology depends on social environment of the guppy, Poecilia reticulata

Author:
Alexander Kotrschal; Björn Rogell; Alexei A. Maklakov; Niclas Kolm
Source:
Behavioral ecology and sociobiology 2012 v.66 no.11 pp. 1485-1492
ISSN:
0340-5443
Subject:
Poecilia reticulata; adults; body size; cerebellum; courtship; females; foraging; gender differences; males; physical properties; sexual dimorphism; social environment; vertebrates
Abstract:
... The vertebrate brain is a remarkably plastic organ, which responds quickly to environmental changes. However, to date, studies investigating plasticity in brain morphology have focused mostly on the physical properties of the surrounding environment, and little is known about brain plasticity in response to the social environment. Moreover, sex differences in brain plasticity remain virtually unex ...
DOI:
10.1007/s00265-012-1403-7

67. Vocalizations reveal body condition and are associated with visual display traits in great frigatebirds (Fregata minor)

Author:
Frans A. Juola; William A. Searcy
Source:
Behavioral ecology and sociobiology 2011 v.65 no.12 pp. 2297-2303
ISSN:
0340-5443
Subject:
body condition; body size; courtship; females; males; seabirds; songbirds; temporal variation; vocalization; Hawaii
Abstract:
... Acoustic displays are known to advertise aspects of male quality and to affect female choice of mates in a variety of birds, including not only songbirds but some seabirds as well. Male great frigatebirds (Fregata minor) produce a rapid warble vocalization that forms a prominent part of their courtship display. We investigated the relationships between aspects of this vocalization and male quality ...
DOI:
10.1007/s00265-011-1240-0

68. Within-group spatial position in ring-tailed coatis: balancing predation, feeding competition, and social competition

Author:
Ben T. Hirsch
Source:
Behavioral ecology and sociobiology 2011 v.65 no.2 pp. 391-399
ISSN:
0340-5443
Subject:
adults; aggression; animals; body size; females; foods; foraging; juveniles; models; nutrient requirements; predation; social dominance; Argentina
Abstract:
... A variety of factors can influence an individual’s choice of within-group spatial position. For terrestrial social animals, predation, feeding success, and social competition are thought to be three of the most important variables. The relative importance of these three factors was investigated in groups of ring-tailed coatis (Nasua nasua) in Iguazú, Argentina. Different age/sex classes respond ...
DOI:
10.1007/s00265-010-1056-3

69. The effect of maternal body size on embryo survivorship in the broods of pregnant male pipefish

Author:
Kenyon B. Mobley; Charlotta Kvarnemo; Ingrid Ahnesjö; Charlyn Partridge; Anders Berglund; Adam G. Jones
Source:
Behavioral ecology and sociobiology 2011 v.65 no.6 pp. 1169-1177
ISSN:
0340-5443
Subject:
Syngnathidae; body size; egg quality; eggs; evolution; females; males; pregnancy; progeny; reproductive system; survival rate
Abstract:
... The occurrence of male pregnancy in the family Syngnathidae (seahorses, pipefishes, and sea dragons) provides an exceptionally fertile system in which to investigate issues related to the evolution of parental care. Here, we take advantage of this unique reproductive system to study the influence of maternal body size on embryo survivorship in the brood pouches of pregnant males of the broad-nosed ...
DOI:
10.1007/s00265-010-1129-3

70. Body size and sexual selection in the koala

Author:
William A. H. Ellis; Fred B. Bercovitch
Source:
Behavioral ecology and sociobiology 2011 v.65 no.6 pp. 1229-1235
ISSN:
0340-5443
Subject:
body size; dimorphism; females; males; microsatellite repeats; reproductive performance; sexual selection; sires
Abstract:
... Sexual selection is often characterized by polygynous breeding systems, size dimorphism, and skewed operational sex ratios. Koalas are sexually dimorphic in multiple domains, yet are absent from the literature on sexual selection and the structure of their mating system is unclear. We provide the first documentation of the strength of sexual selection in koalas by using microsatellite markers to i ...
DOI:
10.1007/s00265-010-1136-4

71. Conditional sex allocation in the Red Mason bee, Osmia rufa

Author:
Seidelmann, Karsten; Ulbrich, Karin; Mielenz, Norbert
Source:
Behavioral ecology and sociobiology 2010 v.64 no.3 pp. 337-347
ISSN:
0340-5443
Subject:
Osmia rufa; body size; daughters; females; longevity; natural selection; nectar; parasites; parasitism; pollen; prediction; risk; sex allocation; sex determination; sex ratio; solitary bees; sons; univoltine habit
Abstract:
... Trivers' and Willard's hypothesis that natural selection favors sex allocation in relation to maternal condition assumes iteropary. Though this assumption is not met in most solitary Aculeata, the reproductive life span of semelparous females may be divided into discrete successive cycles by the risk of open-cell parasitism. Females can avoid losing their investment to parasites attacking the open ...
DOI:
10.1007/s00265-009-0850-2

72. Correlates of male mating success in great bustard leks: the effects of age, weight, and display effort

Author:
Alonso, Juan C.; Magaña, Marina; Palacín, Carlos; Martín, Carlos A.
Source:
Behavioral ecology and sociobiology 2010 v.64 no.10 pp. 1589-1600
ISSN:
0340-5443
Subject:
Otis tarda; adults; age; birds; body size; copulation; females; flocks; lekking; males; plumage; sexual maturity; sexual selection; social structure; ungulates
Abstract:
... We examined how mating success varied in relation to age, weight, body size, and display behavior among great bustard Otis tarda males. The estimated mating success was strongly skewed, with 45% of adult males being involved in copulation attempts and only 9.7% actually seen copulating successfully. Unlike most birds, body size continued increasing in great bustards several years after reaching se ...
DOI:
10.1007/s00265-010-0972-6

73. Inbreeding and caste-specific variation in immune defence in the ant Formica exsecta

Author:
Emma Vitikainen; Liselotte Sundström
Source:
Behavioral ecology and sociobiology 2011 v.65 no.5 pp. 899-907
ISSN:
0340-5443
Subject:
Formica exsecta; body size; females; immune response; inbreeding; longevity; social insects
Abstract:
... Social insects are a widespread and ecologically dominant group. Reproductive division of labour among the females in the colonies is a key trait for their success, but at the same time, it creates dense aggregations of relatives which may promote the spread of disease in the colonies. Hence, the appropriate regulation of immune defence is crucial for the well-being of a colony. Inbreeding may dis ...
DOI:
10.1007/s00265-010-1090-1

74. Low maternal host-encounter rate enhances offspring proliferation in a polyembryonic parasitoid

Author:
Na’ama Morag; Ally R. Harari; Amos Bouskila; Tamar Keasar
Source:
Behavioral ecology and sociobiology 2011 v.65 no.12 pp. 2287-2296
ISSN:
0340-5443
Subject:
Copidosoma; body size; clones; eggs; environmental factors; females; hosts; longevity; mothers; moths; parasitoids; progeny
Abstract:
... Mothers can epigenetically influence their progeny’s characteristics in response to environmental conditions they experience, thereby increasing offspring adaptation to anticipated future conditions. When resource shortage is anticipated, females are expected to produce larger offspring, as large body size often confers competitive and dispersal advantages. We tested this hypothesis using the po ...
DOI:
10.1007/s00265-011-1239-6

75. Sex-specific patterns of lifetime reproductive success in single and repeat breeding steelhead trout (Oncorhynchus mykiss)

Author:
Seamons, Todd R.; Quinn, Thomas P.
Source:
Behavioral ecology and sociobiology 2010 v.64 no.4 pp. 505-513
ISSN:
0340-5443
Subject:
DNA; Oncorhynchus mykiss; adults; body size; breeding; breeding season; fecundity; females; life history; males; parentage; progeny; spawning; trout
Abstract:
... All other things being equal, the lifetime reproductive success (LRS) of iteroparous and semelparous individuals should scale with the number of breeding seasons. Deviations from this relationship may occur for many reasons, including age- or size-related fecundity or life history trade-offs, which may differ between sexes. We used 19 brood years of DNA parentage analysis in a small (N = 4-143 yea ...
DOI:
10.1007/s00265-009-0866-7

76. Species divergence and seasonal succession in rates of mate desertion in closely related Neotropical cichlid fishes

Author:
Topi K. Lehtonen; Bob B. M. Wong; Kai Lindström; Axel Meyer
Source:
Behavioral ecology and sociobiology 2011 v.65 no.4 pp. 607-612
ISSN:
0340-5443
Subject:
interspecific variation; tropics; males; Amatitlania; seasonal variation; body size; progeny; females; breeding season
Abstract:
... Across animal taxa, exclusive female offspring care has evolved repeatedly from biparental care, suggesting that the latter becomes evolutionarily unstable under certain conditions. Both the attributes of a species and the environment it experiences can help to predict shifts from one particular care mode to another. Nevertheless, factors inducing differences in care strategies among closely relat ...
DOI:
10.1007/s00265-010-1061-6

77. Status-dependent and strategic growth adjustments in female cooperative cichlids

Author:
Heg, Dik
Source:
Behavioral ecology and sociobiology 2010 v.64 no.8 pp. 1309-1316
ISSN:
0340-5443
Subject:
Neolamprologus; body size; females; males; socioeconomic status; Lake Tanganyika
Abstract:
... Male group-living cichlids show status and strategic adjustments in growth, but females appear not to show these growth adjustments. Here, an experimental study in the Lake Tanganyika cichlid Neolamprologus pulcher elaborates on these findings. Females did not show status-dependent growth: (1) Growth in females decelerated with body size but did not depend on social status (breeder or helper), and ...
DOI:
10.1007/s00265-010-0945-9

78. Determinants of male reproductive success in American black bears

Author:
Costello, Cecily M.; Creel, Scott R.; Kalinowski, Steven T.; Vu, Ninh V.; Quigley, Howard B.
Source:
Behavioral ecology and sociobiology 2009 v.64 no.1 pp. 125-134
ISSN:
0340-5443
Subject:
reproduction; mothers; fighting behavior; DNA; males; body size; Ursus americanus; females; home range; New Mexico
Abstract:
... We determined annual male reproductive success in black bears (Ursus americanus) using DNA and field data from two populations in New Mexico. We identified the likely father for 78 of 120 genotyped cubs born during 1994-2000 and calculated reproductive success for 102 males known or presumed present within designated mating regions. Age was a strong determinant of reproductive success. The observe ...
DOI:
10.1007/s00265-009-0828-0

79. Females alter their song when challenged in a sex-role reversed bird species

Author:
Geberzahn, Nicole; Goymann, Wolfgang; Muck, Christina; ten Cate, Carel
Source:
Behavioral ecology and sociobiology 2009 v.64 no.2 pp. 193-204
ISSN:
0340-5443
Subject:
animal communication; birds; body size; females; males
Abstract:
... Birdsong serves to attract mates and to deter territorial rivals. Even though song is not restricted to males, this dual function has almost exclusively been demonstrated for male song. To test the generality of hypotheses on birdsong, we investigated female song in the sex-role reversed, classically polyandrous African black coucal (Centropus grillii) in the context of female-female competition. ...
DOI:
10.1007/s00265-009-0836-0
PubMed:
19946649
PubMed Central:
PMC2779343

80. Food supplementation affects egg albumen content and body size asymmetry among yellow-legged gull siblings

Author:
Saino, Nicola; Romano, Maria; Rubolini, Diego; Caprioli, Manuela; Ambrosini, Roberto; Fasola, Mauro
Source:
Behavioral ecology and sociobiology 2010 v.64 no.11 pp. 1813-1821
ISSN:
0340-5443
Subject:
Larus michahellis; birds; body size; daughters; egg albumen; egg quality; eggs; environmental factors; females; food availability; hatching; males; maternal effect; mothers; siblings
Abstract:
... Parental decisions can determine offspring experience of environmental conditions. Such ‘maternal' effects act both before and after hatching via, e.g., egg quality or the social milieu predisposed by parents. Resource availability may constrain the expression of adaptive maternal effects, and the specific pattern of allocation of these effects among offspring depending on their sex or birth order ...
DOI:
10.1007/s00265-010-0993-1

81. Population and individual consequences of breeding resource availability in the European bitterling (Rhodeus amarus)

Author:
Konečná, Markéta; Smith, Carl; Reichard, Martin
Source:
Behavioral ecology and sociobiology 2010 v.64 no.7 pp. 1069-1079
ISSN:
0340-5443
Subject:
Rhodeus; body size; breeding; demography; eggs; embryogenesis; females; fish; freshwater; growing season; juveniles; males; mussels; progeny; reproductive behavior; spawning; territoriality
Abstract:
... Resource availability may affect both individual fitness and population demography and the effects can interact. We used two experiments to test how breeding resource abundance and its spatial distribution, combined with female abundance, affected male reproductive behavior, population spawning rate, and embryo development and recruitment in the European bitterling (Rhodeus amarus), a small cyprin ...
DOI:
10.1007/s00265-010-0921-4

82. A novel, sexually selected trait in poeciliid fishes: female preference for mustache-like, rostral filaments in male Poecilia sphenops

Author:
Schlupp, Ingo; Riesch, Rüdiger; Tobler, Michael; Plath, Martin; Parzefall, Jakob; Schartl, Manfred
Source:
Behavioral ecology and sociobiology 2010 v.64 no.11 pp. 1849-1855
ISSN:
0340-5443
Subject:
Poecilia sphenops; body size; copulation; evolution; female genitalia; females; fish; males
Abstract:
... Female choice can often drive the elaboration of male traits, leading to the evolution of secondary sexual traits. In the Mexican molly, Poecilia sphenops (Poeciliidae), some males exhibit a mustache-like structure on the upper maxilla, the function of which has not been previously recognized. The mustache consists of epidermal outgrowths at the edge of the scales that appear to have no sensory fu ...
DOI:
10.1007/s00265-010-0996-y

83. Body size preferences in the pot-bellied seahorse Hippocampus abdominalis: choosy males and indiscriminate females

Author:
Mattle, Beat; Wilson, Anthony B.
Source:
Behavioral ecology and sociobiology 2009 v.63 no.10 pp. 1403-1410
ISSN:
0340-5443
Subject:
body size; correlation; females; males; mating behavior; reproductive performance; sexual selection
Abstract:
... Male seahorses (genus Hippocampus) provide all post-fertilization parental care, yet despite high levels of paternal investment, these species have long been thought to have conventional sex roles, with female mate choice and male-male competition. Recent studies of the pot-bellied seahorse (Hippocampus abdominalis) have shown that sex-role reversal occurs in high-density female-biased populations ...
DOI:
10.1007/s00265-009-0804-8
PubMed:
19633734
PubMed Central:
PMC2714888

84. Indirect fitness benefits are not related to male dominance in a killifish

Author:
Polačik, Matej; Reichard, Martin
Source:
Behavioral ecology and sociobiology 2009 v.63 no.10 pp. 1427-1435
ISSN:
0340-5443
Subject:
Cyprinodontiformes; body size; eggs; experimental design; females; freshwater fish; genes; males; maternal effect; mating behavior; ovulation; progeny; spermatozoa
Abstract:
... Recent theoretical and empirical studies have shown that male dominance is often at odds with female mate preference and that indirect (genetic) benefits of mate choice may not be related to male dominance. We tested whether female preference corresponded to male dominance and whether mating with dominant males conveyed benefits to offspring fitness in a small freshwater fish, the African annual k ...
DOI:
10.1007/s00265-009-0798-2

85. Parental care and sexual size dimorphism in wasps and bees

Author:
Gavin Shreeves; Jeremy Field
Source:
Behavioral ecology and sociobiology 2008 v.62 no.5 pp. 843-852
ISSN:
0340-5443
Subject:
Apoidea; birds; body size; dimorphism; eggs; exoskeleton; fecundity; females; invertebrates; males; mammals; nests; parental role; phylogeny; pollen
Abstract:
... Sexual size dimorphism, in which one sex is larger than the other, occurs when body size has differential effects on the fitness of males and females. Mammals and birds usually have male-biased size dimorphism, probably because of strong sexual competition among males. Invertebrates usually have female-biased size dimorphism, perhaps because their inflexible exoskeletons limit ovary size, leading ...
DOI:
10.1007/s00265-007-0510-3

86. Tug-of-war over reproduction in a cooperatively breeding cichlid

Author:
Heg, Dik; Hamilton, Ian M.
Source:
Behavioral ecology and sociobiology 2008 v.62 no.8 pp. 1249-1257
ISSN:
0340-5443
Subject:
Neolamprologus; alloparental behavior; animals; body size; breeding; eggs; females; ingestion; models; prediction
Abstract:
... In group-living animals, dominants may suppress subordinate reproduction directly and indirectly, thereby skewing reproduction in their favour. In this study, we show experimentally that this ability ('power') is influenced by resource distribution and the body size difference between unrelated dominants and subordinates in the cichlid Neolamprologus pulcher. Reproduction was strongly skewed towar ...
DOI:
10.1007/s00265-008-0553-0

87. Asymmetric larval competition in the parasitoid wasp Nasonia vitripennis: a role in sex allocation?

Author:
Edward M. Sykes; Tabitha M. Innocent; Ido Pen; David M. Shuker; Stuart A. West
Source:
Behavioral ecology and sociobiology 2007 v.61 no.11 pp. 1751-1758
ISSN:
0340-5443
Subject:
correlation; sex allocation; evolution; males; models; Nasonia vitripennis; sex ratio; Habrobracon hebetor; environmental factors; sons; body size; mammals; mating competitiveness; larvae; parasitic wasps; females; birds; prediction
Abstract:
... Sex allocation theory offers excellent opportunities for testing how animals adjust their behaviour in response to environmental conditions. A major focus has been on instances of local mate competition (LMC), where female-biased broods are produced to maximise mating opportunities for sons. However, the predictions of LMC theory can be altered if there is both local competition for resources duri ...
DOI:
10.1007/s00265-007-0407-1

88. Influence of male harassment and female competition on female feeding behaviour in a sexual-asexual mating complex of mollies (Poecilia mexicana, P. formosa)

Author:
Heubel, Katja U.; Plath, Martin
Source:
Behavioral ecology and sociobiology 2008 v.62 no.11 pp. 1689-1699
ISSN:
0340-5443
Subject:
Poecilia formosa; Poecilia mexicana; body size; copulation; embryogenesis; females; fish; foraging; genes; males; prediction; spermatozoa
Abstract:
... Differential interests between the sexes regarding the number of copulations can result in sexual harassment. Hence, females may have less time available for foraging. Male sexual harassment often leads to fitness reduction in females. We used the mating complex of the bisexual fish Poecilia mexicana and the co-occurring all-female Poecilia formosa to study sexual harassment and its incurred cost ...
DOI:
10.1007/s00265-008-0597-1

89. Patterns of host switching in the fish ectoparasite Argulus coregoni

Author:
Bandilla, Matthias; Hakalahti-Sirén, Teija; Valtonen, E. Tellervo
Source:
Behavioral ecology and sociobiology 2008 v.62 no.6 pp. 975-982
ISSN:
0340-5443
Subject:
Argulus coregoni; Oncorhynchus mykiss; adults; body size; ectoparasites; energy; fecundity; females; fish; genes; males; predation; reproductive behavior; risk; starvation
Abstract:
... Mating is essential for sexually reproducing species to pass on their genes. For sexual parasites, this implies a need to switch the host in the search for a mate when potential partners are not available on the same host, although host switching includes risks like starvation and predation. Studies of mate-searching behavior predict that commonly only one sex searches for mating partners while th ...
DOI:
10.1007/s00265-007-0523-y

90. Sperm removal and ejaculate size correlate with chelae asymmetry in a freshwater crayfish species

Author:
Galeotti, Paolo; Rubolini, Diego; Pupin, Fabio; Sacchi, Roberto; Fasola, Mauro
Source:
Behavioral ecology and sociobiology 2008 v.62 no.11 pp. 1739-1745
ISSN:
0340-5443
Subject:
body size; copulation; crayfish; females; freshwater; males; spermatozoa
Abstract:
... Asymmetry in traits of sexual relevance may impair copulation behaviour and sexual performance of males, ultimately resulting in a fitness cost. Freshwater crayfish males use chelae, a sexually selected trait, to secure and position the female prior to and during mating. Thus, a relatively large chelae asymmetry, resulting from accidental loss and regeneration of one cheliped after autotomy, could ...
DOI:
10.1007/s00265-008-0602-8

91. Sperm traits in the quacking frog (Crinia georgiana), a species with plastic alternative mating tactics

Author:
Hettyey, Attila; Roberts, J. Dale
Source:
Behavioral ecology and sociobiology 2007 v.61 no.8 pp. 1303-1310
ISSN:
0340-5443
Subject:
body size; evolution; females; frogs; longevity; males; mating systems; models; phenotype; polyandry; prediction; risk; sperm competition; spermatozoa; testes
Abstract:
... In species where males use alternative reproductive tactics and male phenotypes are confronted with different risks of sperm competition, theory predicts that between-male-type differences in sperm expenditure may evolve. In the frog Crinia georgiana big males can monopolize females, whereas small males often engage in polyandrous matings. Consequently, big males may experience a lower risk of spe ...
DOI:
10.1007/s00265-007-0361-y

92. Evidence for seasonal mate limitation in populations of an intertidal amphipod, Corophium volutator (Pallas)

Author:
Mark R. Forbes; Dean G. McCurdy; Keiko Lui; Selma I. Mautner; J. Sherman Boates
Source:
Behavioral ecology and sociobiology 2006 v.60 no.1 pp. 87-95
ISSN:
0340-5443
Subject:
Amphipoda; adults; animals; body size; breeding; clutch size; fecundity; females; laboratory experimentation; littoral zone; males; phenology; population; seasonal variation; sex ratio
Abstract:
... Potential rates of reproduction (PRR) differ between the sexes of many animal species. Adult sex ratios together with PRR are expected to determine the operational sex ratio (OSR) defined as the ratio of fertilizable females to sexually active males at any given time. OSR is expected to determine the degree to which one sex competes for another--the limiting sex. We explored the potential for mate ...
DOI:
10.1007/s00265-005-0144-2

93. Offspring sex ratio in relation to parental structural size and body condition in the long-lived wandering albatross (Diomedea exulans)

Author:
Pierrick Blanchard; Nicolas Hanuise; Stéphanie Dano; Henri Weimerskirch
Source:
Behavioral ecology and sociobiology 2007 v.61 no.5 pp. 767-773
ISSN:
0340-5443
Subject:
body condition; body size; chicks; daughters; females; fledglings; males; methodology; population; seabirds; sex ratio; sons
Abstract:
... Sex ratio theory is one of the most controversial topics in evolutionary ecology. Many deviations from an equal production of males and females are reported in the literature, but few patterns appear to hold across species or populations. There is clearly a need to identify fitness effects of sex ratio variation. We studied this aspect in a population of a long-lived seabird, the wandering albatro ...
DOI:
10.1007/s00265-006-0307-9

94. Queuing for dominance: gerontocracy and queue-jumping in the hover wasp Liostenogaster flavolineata

Author:
Bridge, Catherine; Field, Jeremy
Source:
Behavioral ecology and sociobiology 2007 v.61 no.8 pp. 1253-1259
ISSN:
0340-5443
Subject:
reproduction; nests; fighting behavior; Liostenogaster flavolineata; body size; females
Abstract:
... The mechanisms through which dominance is inherited within social groups vary from direct interactions such as fighting to non-confrontational conventions. Liostenogaster flavolineata is a primitively eusocial hover wasp in which one female, the 'dominant', is the only reproductive upon the nest. The remaining females, although capable of reproduction, behave as helpers. In this study, we investig ...
DOI:
10.1007/s00265-007-0355-9

95. Relationship between body size, provisioning rate, longevity and reproductive success in females of the solitary bee Osmia cornuta

Author:
Jordi Bosch; Narcís Vicens
Source:
Behavioral ecology and sociobiology 2006 v.60 no.1 pp. 26-33
ISSN:
0340-5443
Subject:
Osmia; body size; daughters; fecundity; females; longevity; males; mortality; nesting; nests; solitary bees; sons; vigor; weather
Abstract:
... Body size has often been related to reproductive success in bees and wasps. The objective of this 3-year study was to analyze the relationship between nesting female body size, provisioning rate and longevity and their effect on several traits related to parental investment and reproductive success in the solitary bee Osmia cornuta. Body size was not correlated to longevity, and it was only correl ...
DOI:
10.1007/s00265-005-0134-4

96. Sex-specific maternal effect on egg mass, laying order, and sibling competition in the Bengalese finch (Lonchura striata var. domestica)

Author:
Masayo Soma; Daichi S. Saito; Toshikazu Hasegawa; Kazuo Okanoya
Source:
Behavioral ecology and sociobiology 2007 v.61 no.11 pp. 1695-1705
ISSN:
0340-5443
Subject:
adults; body size; breeding; chicks; daughters; dimorphism; early development; eggs; females; gender differences; hatching; males; maternal effect; mothers; sons
Abstract:
... Maternal effects, such as investment in eggs, have profound effects on offspring fitness. Mothers are expected to skew their investment depending on the laying order and sex when unequal sibling competition occurs within a brood because of sex-specific vulnerability and age hierarchy caused by asynchronous hatching. The Bengalese finch hatches asynchronously and shows a moderate reversed sexual si ...
DOI:
10.1007/s00265-007-0400-8

97. A conspicuous courtship signal in the fiddler crab Uca perplexa: female choice based on display structure

Author:
Minoru Murai; Patricia R. Y. Backwell
Source:
Behavioral ecology and sociobiology 2006 v.60 no.5 pp. 736-741
ISSN:
0340-5443
Subject:
body size; burrows; claws; courtship; crabs; females; males
Abstract:
... The fiddler crab Uca perplexa has a conspicuous male courtship signal that is directed at females to attract them to the male’s burrow for mating. The signal involves waving the unflexed large claw up and down. To determine whether the spatiotemporal structure of the wave is under selection by female choice, we examined whether females had a preference for any particular features of the wave. Fema ...
DOI:
10.1007/s00265-006-0217-x

98. The cost of mating with a non-virgin male in a monandrous butterfly: experimental evidence from the speckled wood, Pararge aegeria

Author:
Kris Lauwers; Hans Van Dyck
Source:
Behavioral ecology and sociobiology 2006 v.60 no.1 pp. 69-76
ISSN:
0340-5443
Subject:
Pararge aegeria; body size; butterflies; copulation; eggs; females; hormones; insect larvae; longevity; males; nutrients; polyandry; progeny; spermatophores; spermatozoa; vertebrates; wood
Abstract:
... Contrary to vertebrates, sperm production in insects may bear considerable costs for males. This is especially true in species that donate spermatophores containing sperm and nutrient-rich accessory gland products like in butterflies. Hence, spermatophores at first and subsequent copulations can differ in a quantitative and qualitative way. Such effects have particularly been shown in polyandrous ...
DOI:
10.1007/s00265-005-0142-4

99. Hermaphrodite sex role preferences: the role of partner body size, mating history and female fitness in the sea slug Chelidonura sandrana

Author:
Nils Anthes; Annika Putz; Nico K. Michiels
Source:
Behavioral ecology and sociobiology 2006 v.60 no.3 pp. 359-367
ISSN:
0340-5443
Subject:
body size; copulation; ejaculation; fecundity; female fertility; females; males; mating frequency; models; outcrossing; prediction; slugs; spermatozoa
Abstract:
... Costs and benefits associated with matings and the effects of mating frequency on fitness commonly differ between the sexes. As a result, outcrossing simultaneous hermaphrodites may prefer to copulate in the more rewarding sex role, generating conflicts over sperm donation and sperm receipt between mates. Because recent sex role preference models remain controversial, we contrast here some of thei ...
DOI:
10.1007/s00265-006-0173-5

100. The effects of castration, sex ratio and population density on social segregation and habitat use in Soay sheep

Author:
Ruckstuhl, K. E.; Manica, A.; MacColl, A. D. C.; Pilkington, J. G.; Clutton-Brock, T. H.
Source:
Behavioral ecology and sociobiology 2006 v.59 no.5 pp. 694-703
ISSN:
0340-5443
Subject:
Agrostis; females; habitat preferences; census data; autumn; Calluna; sex ratio; spring; forage; social behavior; Holcus; body size; lambs; population density; rams; Soay; summer; habitats; castration; breeding season
Abstract:
... We analysed 16 years of census data gathered on the island of Hirta (archipelago of St. Kilda) to investigate the effects of castration, population density, sex ratio, season and group type on habitat use and social segregation of Soay sheep. From 1978 to 1980, 72 male lambs were castrated. We used this experiment to study how a change in reproductive status could affect sociality and habitat choi ...
DOI:
10.1007/s00265-005-0099-3