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1. Allometric Growth of the Freshwater Crab Potamon algeriense (Bott, 1967) (Decapoda, Brachyura, Potamidae) in Oued Zegzel, a Mountain Stream, in the Northeast of Morocco

Author:
Soufiane Fadlaoui; Mohammed Mahjoub; Ouahid El Asri; Mohammed Melhaoui
Source:
International journal of zoology 2019 v.2019 pp. -
ISSN:
1687-8485
Subject:
Decapoda; abdomen; allometry; burrows; crabs; egg incubation; females; freshwater; males; morphometry; regression analysis; rivers; sexual maturity; streams; Morocco
Abstract:
... A morphometric study has been carried out for the first time on the population of the freshwater crab Potamon algeriense inhabiting Oued Zegzel, a tributary of the Lower Moulouya River, in the northeast of Morocco. Crabs were collected monthly over one year (October 2017 to September 2018) by excavating burrows and searching under blocks. A total of 669 crabs were obtained, 291 females and 378 mal ...
DOI:
10.1155/2019/5168639

2. Allometric coefficients for physical-chemical parameters of meat in a local sheep breed

Author:
Alberto Sabbioni; Valentino Beretti; Ernesto Mario Zambini; Paola Superchi; Michela Ablondi
Source:
Small ruminant research 2019 v.174 pp. 141-147
ISSN:
0921-4488
Subject:
allometry; analysis of variance; body weight; color; equations; fasting; fatty acid composition; females; gender differences; lean meat; lipid content; males; pH; polyunsaturated fatty acids; proximate composition; sheep; sheep breeds; sheep meat; slaughter; vertebrae
Abstract:
... With the aim to assess the kind of development of meat colour, pH, chemical composition and fatty acids content, lean meat from a sample cut, taken in correspondence of the first 4 thoracic vertebrae from 164 animals of the Cornigliese sheep breed, was analysed. The animals (104 females, 60 males) were fed with the same nutritional plan; they were between 3.6 and 80.0 months old and their body wei ...
DOI:
10.1016/j.smallrumres.2019.04.001

3. Allometric coefficients of major chemical components of meat quail raised in different thermal environments

Author:
T.V.R. Sousa; J.C. Siqueira; D.C.N. Nascimento; F.B. Ribeiro; M.A.D. Bomfim; A.C.D. Leão; J.O.M. Costa; F. C. Vieira Filho
Source:
Poultry science 2019 v.98 no.12 pp. 6626-6635
ISSN:
0032-5791
Subject:
allometry; cages; crude protein; early development; freeze drying; lipids; males; meat; nutrition; quails; water content
Abstract:
... The objective of the present study was to estimate and compare allometric coefficients of the major chemical components of meat quail raised in different thermal environments, based on protein weight of feather free body (FFB) and feathers. In total, 300 meat quail, males and females, were distributed in a completely randomized design with 2 treatments (climatized environment, 26°C, and non-climat ...
DOI:
10.3382/ps/pez509

4. Allometry and morphological trait relationship in the sexually dimorphic Chinese dobsonfly, Acanthacorydalis asiatica (Wood-Mason, 1884) (Megaloptera, Corydalidae)

Author:
Chengquan Cao; Pei Yu; Fumio Hayashi
Source:
ZooKeys 2019 v.854 pp. 119-129
ISSN:
1313-2970
Subject:
Corydalidae; allometry; body size; female genitalia; male genitalia; males; progeny; sexual dimorphism; spermatophores; spermatozoa
Abstract:
... Male insects with large weapons such as horns and elongate mandibles would be expected to invest more on such structures than other parts of the body for advantages in male to male competition for mating. In male genitalia, however, intermediate size provides a better fit for more females than small or large sizes, and such a male would leave more offspring regardless of their body size. These pre ...
DOI:
10.3897/zookeys.854.32897

5. Are differences in variation and allometry in testicular size of two sibling species of the genus Mus (Mammalia, Rodentia) caused by female promiscuity?

Author:
Alexander Csanády; Michal Stanko; Ladislav Mošanský
Source:
Mammal research 2019 v.64 no.1 pp. 31-38
ISSN:
2199-2401
Subject:
Mus musculus; allometry; body weight; females; males; mating systems; mice; monogamy; phenotypic variation; phylogeny; reproductive success; sexual selection; sibling species; sperm competition; spermatozoa; testes; testosterone; Carpathian region; Slovakia
Abstract:
... Body and testes size can significantly affect male reproductive success under pre- and post-copulatory sexual selection. Testicular relative mass and/or volume are often used as a characteristic of sperm competitive ability in a comparison of phylogenetically close mammal species. Mus spicilegus males have the largest testes relative to body mass of any Mus species, which is often an indicator of ...
DOI:
10.1007/s13364-018-0393-x

6. Aspects of reproductive biology of curimba Prochilodus lacustris (Pisces, Prochilodontidae) in a tropical lake in Northeastern Brazil

Author:
Rayssa de Lima Cardoso; Marcelo Henrique Lopes Silva; Raimunda Nonata Fortes Carvalho‐Neta; Antonio Carlos Leal de Castro; Cássia Fernanda Chagas Ferreira; Helen Roberta Silva Ferreira; Débora Martins Silva Santos
Source:
Journal of applied ichthyology 2019 v.35 no.2 pp. 488-500
ISSN:
0175-8659
Subject:
Prochilodus; allometry; biometry; body length; condition factor; dissolved oxygen; electrical conductivity; environmental factors; females; gillnets; gonadosomatic index; gonads; hepatosomatic index; indicator species; lakes; lentic systems; males; meteorological data; oxygen; pH; repletion; reproduction; sex ratio; spawning; stomach; temperature; tropical fish; wet season; Brazil
Abstract:
... This study evaluated the annual cycle of biological reproductive aspects of Prochilodus lacustris, a neotropical fish species, in Baixada Maranhense Protection Area in northeastern Brazil. Fish were collected monthly between June of 2015 and June of 2016 using gill nets. In the laboratory, 600 individuals were weighed, measured, and eviscerated to obtain biometric data and data for the microscopic ...
DOI:
10.1111/jai.13868

7. Biological Aspect of Bullet Tuna Auxis rochei (Risso, 1810) in the Makassar Strait, West Sulawesi, Indonesia

Author:
Wayan Kantun; Indra Cahyono; Wayan Suma Arsana
Source:
Croatian journal of fisheries 2019 v.77 no.3 pp. 119-126
ISSN:
1848-0586
Subject:
Auxis; Crustacea; allometry; females; fisheries; length; males; objectives; research; sampling; stomach; tuna; weight; Indonesia
Abstract:
... The objectives of the present study were to determine the size distribution, growth pattern, feeding habit and stomach fullness index of bullet tuna Auxis rochei in the Makassar Strait, West Sulawesi. The research was conducted for six months between March and August 2017. Sampling collection was carried out using the handline technique. A total of 2160 fish were caught. Their total length ranged ...
DOI:
10.2478/cjf-2019-0013

8. Comparative analysis of growth performance between female and male mud crab Scylla paramamosain crablets: Evidences from a four-month successive growth experiment

Author:
Xi Shi; Jianxue Lu; Qingyang Wu; Khor Waiho; Jude Juventus Aweya; Hanafiah Fazhan; Yueling Zhang; Shengkang Li; Huaiping Zheng; Fan Lin; Cuihong You; Mhd Ikhwanuddin; Hongyu Ma
Source:
Aquaculture 2019 v.505 pp. 351-362
ISSN:
0044-8486
Subject:
Scylla paramamosain; abdomen; allometry; body weight; crabs; equations; females; fisheries; growth performance; growth traits; juveniles; males; pond culture; regression analysis; sex ratio; sexual dimorphism; China; South East Asia
Abstract:
... Mud crab (Scylla paramamosain) is an economically important crustacean species for fisheries and aquaculture industry in China and other Southeast Asian countries. In this study, the sex ratio, morphological dimorphism, and the characteristics of morphological traits between female and male S. paramamosain juveniles at three different pond-culture stages were determined. The sex ratio skewed towar ...
DOI:
10.1016/j.aquaculture.2019.02.062

9. Divergent patterns of correlated evolution in primary and secondary sexual traits of cactophilic Drosophila

Author:
Julián Padró; Juan Vrdoljak; Pablo Milla Carmona; Ignacio M. Soto
Source:
Evolutionary ecology 2019 v.33 no.1 pp. 71-87
ISSN:
0269-7653
Subject:
Drosophila; alkaloids; allometry; genitalia; males; reproductive isolation; secondary metabolites
Abstract:
... The rapid diversification of sexual traits is a common phenomenon accompanying the evolution of reproductive isolation, yet the evolutionary mechanisms driving such diversification are often unknown. Based on experimentally evolved strains of two sister species of cactophilic Drosophila, we investigated the correlated evolution of primary and secondary sexual traits to semi-natural environments en ...
DOI:
10.1007/s10682-018-9964-1

10. Does plant allometry predict biased sex allocation in Triadica sebifera (L.) small (Euphorbiaceae)?

Author:
Courtney H. Babin; Jerome J. Howard
Source:
Plant ecology 2019 v.220 no.4-5 pp. 529-539
ISSN:
1385-0237
Subject:
Triadica sebifera; allometry; dry matter partitioning; females; introduced plants; invasive species; life history; males; monoecy; seed germination; seed size; seeds; sex allocation; trees
Abstract:
... Early seed production by non-native plants may be important to their successful establishment and spread. Understanding the mechanisms underlying age- or size-biased seed production in introduced plants may also identify factors that contribute to propagule pressure and their success as invaders. Here, we asked whether differences in male and female reproductive allocation among individuals of the ...
DOI:
10.1007/s11258-019-00933-0

11. Dynamics of the mineral composition and deposition rates in the empty body of entire males, castrates and female pigs

Author:
I. Ruiz-Ascacibar; P. Stoll; G. Bee; P. Schlegel
Source:
Animal 2019 v.13 no.5 pp. 950-958
ISSN:
1751-732X
Subject:
Large White; allometry; bile; blood; body protein; bone mineralization; calcium; castration; copper; dietary protein; electrolytes; equations; females; intestines; iron; low protein diet; lysine; magnesium; males; manganese; mineral content; minerals; phosphorus; potassium; protein content; protein deposition; sodium; swine; threonine; tryptophan; zinc
Abstract:
... Mineral composition and relative deposition rates in the pig’s body are used to assess the mineral net requirements for growth and input–output balances. The study aimed to examine the dynamics of changes in mineral composition and deposition rates in the empty body (EB) from birth to 140 kg BW depending on dietary protein supply. In the experiment, 66 entire male, 58 castrated and 66 female Swiss ...
DOI:
10.1017/S1751731118002495
PubMed:
30324903 30324903

12. Ecological plasticity of denning chronology by American black bears and brown bears

Author:
Nicholas L. Fowler; Jerrold L. Belant; Guiming Wang; Bruce D. Leopold
Source:
Global ecology and conservation 2019 pp. -
ISSN:
2351-9894
Subject:
Ursus americanus; Ursus arctos; allometry; energy conservation; females; food availability; forage; growing season; linear models; males; meta-analysis; prediction; reproduction; snow; North America
Abstract:
... Ecological plasticity may index the capacity of individuals, populations, and species to respond to stochasticity. Few studies have demonstrated mechanisms influencing expression of plasticity and less have addressed proximate and causal mechanisms at multiple scales. We used linear models and meta-analyses to investigate factors influencing among and within population plasticity in den chronology ...
DOI:
10.1016/j.gecco.2019.e00750

13. Effects of dietary CP and amino acid restriction on the growth dynamics of organs and body components in entire male, castrated and female pigs

Author:
I. Ruiz-Ascacibar; P. Stoll; G. Bee
Source:
Animal 2019 v.13 no.10 pp. 2223-2231
ISSN:
1751-732X
Subject:
Large White; allometry; backfat; castration; cystine; diet; dietary restriction; females; ham; kidneys; lysine; males; methionine; nitrogen; nutrients; nutritional intervention; subcutaneous fat; swine; swine production; threonine; tryptophan
Abstract:
... The optimized use of dietary nutrients and the accurate knowledge of the growth dynamics of body components is important for efficient pig production. This study aimed at evaluating the growth of carcass components and organs of Swiss Large White pigs from birth to 140 kg BW depending on the CP and amino acid (AA) supply. A total of 66 entire males (EM), 58 castrates (CA) and 66 female (FE) pigs w ...
DOI:
10.1017/S1751731119000132
PubMed:
30806340
PubMed Central:
PMC6749252

14. Fighting injuries, fig exit, and dimorphism in two species of sycoryctine fig wasp (Chalcidoidea, Pteromalidae)

Author:
Da-Mien Wong; Anthony Bain; Shiuh-Feng Shiao; Lien-Siang Chou
Source:
Journal of Hymenoptera research 2019 v.74 pp. 105-121
ISSN:
1314-2607
Subject:
Agaonidae; Pteromalidae; allometry; conspecificity; dimorphism; figs; head; invertebrates; males; research; vertebrates
Abstract:
... Similar to many vertebrate and invertebrate species, many fig wasp species are fighting other members of their species for mates. Fighting between the males of many non-pollinating fig wasp species involves injuries and fatalities. Studies have shown that large males fight for mates, whereas conspecific small males tend to adopt nonfighting, sneaky behaviors. To analyze male morphs in two non-poll ...
DOI:
10.3897/jhr.74.36461

15. Golden Orbweavers Ignore Biological Rules: Phylogenomic and Comparative Analyses Unravel a Complex Evolution of Sexual Size Dimorphism

Author:
Matjaž Kuntner; Chris A Hamilton; Ren-Chung Cheng; Matjaž Gregorič; Nik Lupše; Tjaša Lokovšek; Emily Moriarty Lemmon; Alan R Lemmon; Ingi Agnarsson; Jonathan A Coddington; Jason E Bond; Adrian Paterson
Source:
Systematic biology 2019 v.68 no.4 pp. 555-572
ISSN:
1076-836X
Subject:
Araneidae; Cretaceous period; Nephila; allometry; amber; body length; coevolution; females; hybrids; males; monophyly; new status; phenotype; sexual dimorphism; webs
Abstract:
... Instances of sexual size dimorphism (SSD) provide the context for rigorous tests of biological rules of size evolution, such as Cope’s rule (phyletic size increase), Rensch’s rule (allometric patterns of male and female size), as well as male and female body size optima. In certain spider groups, such as the golden orbweavers (Nephilidae), extreme female-biased SSD (eSSD, female:male body length $ ...
DOI:
10.1093/sysbio/syy082
PubMed:
30517732
PubMed Central:
PMC6568015

16. Growth parameter, mortality, recruitment pattern, and exploitation rate of white shrimp Penaeus indicus in northern coastal waters of Western Central Java, Indonesia

Author:
SURADI WIJAYA SAPUTRA; ANHAR SOLICHIN; WIWIET TEGUH TAUFANI; SITI RUDIYANTI; NINIEK WIDYORINI
Source:
Biodiversitas 2019 v.20 no.5 pp. -
ISSN:
2085-4722
Subject:
Fenneropenaeus indicus; allometry; coasts; equations; females; males; mortality; shrimp; surveys; Indonesia; Java Sea
Abstract:
... Saputra SW, Solichin A, Taufani WT, Rudiyanti S, Widyorini N. 2019. Growth parameter, mortality, recruitment pattern, and exploitation rate of white shrimp Penaeus indicus on the northern coast of Central Java, Indonesia. Biodiversitas 20: 1318-1324. The aims of this study were to know the growth parameters, first lenght captured (Lc), mortality, recruitment pattern, and the exploitation rate of w ...
DOI:
10.13057/biodiv/d200511

17. Heterochely and laterality in Kingsleya castrensis Pedraza, Martinelli-Filho & Magalhães, 2015 (Decapoda, Pseudothelphusidae)

Author:
José E. Martinelli Filho; Thuareag M. Trindade Dos Santos; Marcelo Petracco; Renata C. De Lima-Gomes; Célio U. Magalhães
Source:
Crustaceana v.92 no.4 pp. 415-427
ISSN:
0011-216X
Subject:
Decapoda; Neotropics; allometry; crabs; fauna; females; habitat destruction; males; new species; sexual dimorphism; surveys; territoriality
Abstract:
... Crabs of the family Pseudothelphusidae are restricted to the Neotropical region and new species are described every year. They are threatened by habitat loss and knowledge of this family is almost limited to taxonomy and faunal surveys. Here, we investigate the presence of heterochely and laterality in Kingsleya castrensis, as a tool to infer ecological and behavioural aspects. Since most Pseudoth ...
DOI:
10.1163/15685403-00003890

18. Historical Assumptions about the Predation Patterns of Yellow Anacondas (Eunectes notaeus): Are They Infrequent Feeders?

Author:
Bruno F. Camera; Everton B. P. Miranda; Raimundo P. Ribeiro; Mariano Barros; Juan Draque; Tomás Waller; Patrício A. Micucci; Cristian S. Dambros; Christine Strüssmann
Source:
Journal of herpetology 2019 v.53 no.1 pp. 47-52
ISSN:
1937-2418
Subject:
allometry; animal reproduction; fat body; feeding frequency; females; foraging; habitats; heart; hypertrophy; intestines; kidneys; liver; males; predation; snakes; stomach
Abstract:
... Size and function of digestive organs in snakes are modulated by feeding frequency and by the energetic demands of reproduction. This allows snakes to minimize costs and maximize the energetic gains from predation. Examination of Yellow Anacondas (Eunectes notaneus) acquired from sustainable management activities provided an opportunity to study the predation in this species. Field evidence poses ...
DOI:
10.1670/18-089

19. Length-Weight Relationships and Condition Factors of the Naleh Fish, Barbonymus gonionotus (Pisces, Cyprinidae) Harvested from Nagan Raya Waters, Indonesia

Author:
A. S. Batubara; Z. A. Muchlisin; D. Efizon; R. Elvyra; M. Irham
Source:
Vestnik zoologii 2019 v.53 no.1 pp. 75-82
ISSN:
2073-2333
Subject:
Barbonymus gonionotus; allometry; aquatic environment; body length; body weight; condition factor; females; fish; fishermen; males; models; predators; rivers; surveys; Indonesia
Abstract:
... The objective of the present study was to examine the growth pattern and condition factors of the naleh fish, Barbonymus gonionotus Bleeker, 1849 in Nagan River, Nagan Raya District, Aceh Province, Indonesia. The sampling was conducted for 12 months from January 2016 to December 2016 using the explorative survey method. The sampling locations were determined based on the information given by local ...
DOI:
10.2478/vzoo-2019-0008

20. Male Horn Lack of Allometry May be Tied to Food Relocation Behaviour in Lifting Dung Beetles (Coleoptera, Scarabaeidae, Eucraniini)

Author:
Claudia Palestrini; Enrico Barbero; Angela Roggero
Source:
Insects 2019 v.10 no.10 pp. -
ISSN:
2075-4450
Subject:
Scarabaeidae; allometry; body size; dung beetles; geometry; head; horns; intraspecific variation; males; morphometry; polyphenism
Abstract:
... The small dung beetle tribe Eucraniini includes extremely specialized species that have been defined as “lifters” according to their food relocation behaviour. They are characterized by the presence of well-developed expansions on the head and pronotum, which can be included in the large and varied group of horns, whose presence is usually related to complex reproductive tactics. In th ...
DOI:
10.3390/insects10100359
PubMed:
31635392
PubMed Central:
PMC6835258