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1. Biological aspects of brown-marbled grouper (Epinephelus fuscoguttatus) from Taka Bonerate National Park, District of Selayar Islands, South Sulawesi, Indonesia

Author:
Fatma; Achmar Mallawa; Najamuddin; Mukti Zainuddin; Fachrie Rezka Ayyub
Source:
Biodiversitas 2022 v.23 no.2 pp. -
ISSN:
2085-4722
Subject:
Decapoda; Epinephelus fuscoguttatus; allometry; condition factor; diet; digestive system; equations; females; males; maturity stage; national parks; piscivores; regression analysis; Indonesia
Abstract:
... Fatma, Mallawa A, Najamuddin, Zainuddin M, Ayyub FR. 2022. Biological aspects of brown-marbled grouper (Epinephelus fuscoguttatus) from Taka Bonerate National Park, District of Selayar Islands, South Sulawesi, Indonesia. Biodiversitas 23: 1140-1153. Knowledge regarding biological aspects of fishes such as the brown-marbled grouper can provide important information for fisheries management. This re ...
DOI:
10.13057/biodiv/d230259

2. Biometry, size structure and reproductive cycle of the sanded sea cucumbers Holothuria poli (Echinodermata, Holothuriidae) from the west Algerian coast

Author:
Karim Mezali; Zineb Lebouazda; Farah Slimane-Tamacha; Dina Lila Soualili
Source:
Invertebrate reproduction & development 2022 v.66 no.1 pp. 67-77
ISSN:
2157-0272
Subject:
Holothuria; allometry; biometry; body weight; coasts; databases; females; gonads; invertebrates; males; reproduction; sex ratio; sexual maturity; summer
Abstract:
... The aim of this work is to study the biometric and reproductive characteristics of a population of Holothuria poli from the west Algerian coast. The study was carried out on 256 individuals (33.25 ± 12.38 g wet weight and 196.44 ± 37.81 mm relaxed length) collected from Oran Bay between October 2016 and September 2017. All individuals showed negative allometric growth (b = 1.586) and the populatio ...
DOI:
10.1080/07924259.2022.2033331

3. Contamination effects on sexual selection in wild dung beetles

Author:
Sebastián Villada‐Bedoya; Alex Córdoba‐Aguilar; Federico Escobar; Daniel González‐Tokman
Source:
Journal of evolutionary biology 2022 v.35 no.7 pp. 905-918
ISSN:
1010-061X
Subject:
Copris incertus; Euoniticellus intermedius; allometry; body size; body weight; feces; fecundity; females; herbicides; ivermectin; males; sexual dimorphism; sexual selection
Abstract:
... Sexual selection influences the expression of secondary sexual traits, which are costly to produce and maintain and are thus considered honest indicators of individual condition. Therefore, sexual selection could select for high‐quality individuals able to respond to stressful conditions, with impacts on population‐level fitness. We sampled dung beetles from 19 pastures and investigated if contami ...
DOI:
10.1111/jeb.14024

4. Darwin's and Wallace's Fascinations With Oversized Morphology and the Question of Developmental Plasticity

Author:
Kazuo Kawano
Source:
Annals of the Entomological Society of America 2022 v.115 no.2 pp. 194-201
ISSN:
0013-8746
Subject:
Lucanidae; allometry; body length; males; sexual selection; tibia; Indonesia
Abstract:
... Darwin in his book, The Descent of Man and Selection in Relation to Sex, described his fascination with a male Chiasognathus grantii Stephens (Coreptera, Lucanidae), a stag beetle species with enormous mandibles. Wallace in his book, The Malay Archipelago, recorded his enchantment with a male Euchirus longimanus L. (Coreptera, Scarabaeoidae), a ‘chafer’ species with ‘immense fore-arms’ (tibia or f ...
DOI:
10.1093/aesa/saab044

5. Deceived, but not betrayed: static allometry suggests female ornaments in the long-tailed dance fly (Rhamphomyia longicauda) exaggerate condition to males [Erratum: August 2022, v.36(4); pp.737-739]

Author:
Jessica H. Browne; Darryl T. Gwynne
Source:
Evolutionary ecology 2022 v.36 no.4 pp. 631-641
ISSN:
0269-7653
Subject:
abdomen; allometry; body size; eggs; evolution; fecundity; females; femur; males; tibia
Abstract:
... Despite their prevalence in nature, the evolution of sex-specific female ornaments is still not well understood. Although in some cases (often carotenoid-based ornaments) they appear to honestly signal quality, such as fecundity, it has been suggested that some female ornaments evolved to deceptively obtain matings. One such case is the long-tailed dance fly (Rhamphomyia longicauda) where females ...
DOI:
10.1007/s10682-021-10148-3

6. Echocardiographic reference intervals in healthy UK deerhounds and prevalence of preclinical dilated cardiomyopathy: a prospective, longitudinal study

Author:
E. Dutton; P. Cripps; S.A.F. Helps; J. Harris; J. Dukes-McEwan
Source:
Journal of veterinary cardiology 2022 v.40 pp. 142-155
ISSN:
1760-2734
Subject:
allometry; body weight; cardiomyopathy; echocardiography; females; longitudinal studies; males
Abstract:
... Sighthounds have high echocardiographic (ECHO) left ventricular volumes. Establishing robust breed-specific ECHO reference intervals (RI) for screening is important. End-diastolic volume index (EDVI), end-systolic volume index (ESVI) and ejection fraction (EF) reference ranges derived by Simpson's method of discs are not available for deerhounds. The influence of sex or body weight (BW) on left ve ...
DOI:
10.1016/j.jvc.2021.04.001

7. Female preference for super-sized male ornaments and its implications for the evolution of ornament allometry

Author:
Thomas C. Summers; Terry J. Ord
Source:
Evolutionary ecology 2022 v.36 no.4 pp. 701-716
ISSN:
0269-7653
Subject:
Alticus; allometry; body size; courtship; ecology; females; fish; head; males; sexual selection
Abstract:
... It has been argued that disproportionately larger ornaments in bigger males—positive allometry—is the outcome of sexual selection operating on the size of condition dependent traits. We reviewed the literature and found a general lack of empirical testing of the assumed link between female preferences for large ornaments and a pattern of positive allometry in male ornamentation. We subsequently co ...
DOI:
10.1007/s10682-022-10181-w

8. Function predicts the allometry of contest-related traits, but not sexual or male dimorphism in the amazonian tusked harvestman

Author:
Alexandre V. Palaoro; Solimary García-Hernández; Bruno A. Buzatto; Glauco Machado
Source:
Evolutionary ecology 2022 v.36 no.4 pp. 605-630
ISSN:
0269-7653
Subject:
Opiliones; allometry; animals; ecology; females; males; natural selection; sexual dimorphism
Abstract:
... Animal contests involve threatening displays and physical coercion, which are respectively performed by threat devices used in mutual evaluation of size or strength, and weapons used for grasping, stabbing, striking, or dislodging a rival. According to the functional allometry hypothesis, directional selection consistently favors hyper-allometry in threat devices, whereas the allometry of weapons ...
DOI:
10.1007/s10682-022-10152-1

9. How to get rid of diploid bumblebee males – variability in wing size and shape does not allow within‐colony ploidy discrimination

Author:
Gherardo Bogo; Diego Cejas; Pilar De la Rúa; Laura Bortolotti
Source:
Entomologia experimentalis et applicata 2022 v.170 no.2 pp. 182-192
ISSN:
0013-8703
Subject:
Bombus terrestris; allometry; data collection; databases; diploidy; food availability; geometry; greenhouses; haploidy; homozygosity; larval development; loci; males; morphometry; museums; pollination; pollinators; sample size; sex determination; temperature
Abstract:
... The bumblebee Bombus terrestris L. (Hymenoptera: Apidae) is an effective pollinator of both wild and cultivated plants and essential for the pollination of various important greenhouse crops. Because of its sex determination mechanism, homozygosity of the complementary sex determination (csd) locus due to inbreeding causes fertilized eggs to develop into diploid males, which represent a serious di ...
DOI:
10.1111/eea.13128

10. Relationship between body size and sexual size dimorphism in syringophilid quill mites

Author:
Lajos Rózsa; Evelyn Moldovan
Source:
Parasitology research 2022 v.121 no.3 pp. 891-898
ISSN:
0932-0113
Subject:
Acari; allometry; body size; data collection; females; males; parasites; parasitology; research; sexual dimorphism; sexual selection
Abstract:
... A positive relationship of body size and sexual size dimorphism (males’ size relative to females), called Rensch’s rule, is often observed in comparisons within non-parasitic taxa. However, this allometric relationship has rarely been tested in comparisons across closely related parasite species. Since male sexual rivalry is often regarded as the main cause of this phenomenon, the present study te ...
DOI:
10.1007/s00436-022-07437-3

11. Size variation, allometry and mating success in AotearoaNew Zealand kelp flies (Coelopidae)

Author:
Rebecca J. LeGrice; Gregory I. Holwell
Source:
Evolutionary ecology 2022 v.36 no.4 pp. 683-700
ISSN:
0269-7653
Subject:
Coelopidae; allometry; females; macroalgae; males; population dynamics; sexual dimorphism; sexual selection; tibia
Abstract:
... The need to respond quickly to the presence of an ephemeral resource required for breeding is often a feature of scramble competition mating systems. Scramble competition mating systems can feature extreme levels of sexual conflict and coercive mating by males. As a result, sexual selection can act on various traits used by males to overcome female resistance behaviours. Selection on these traits ...
DOI:
10.1007/s10682-022-10159-8

12. The stabilising impact of natural selection on the allometry of sexual ornaments: Fish that escape locomotor constraints exhibit extravagant ornamentation

Author:
Thomas C. Summers; Terry J. Ord
Source:
Functional ecology 2022 v.36 no.2 pp. 500-511
ISSN:
0269-8463
Subject:
allometry; biomechanics; body size; ecology; fins; fish; head; males; sexual selection
Abstract:
... Positive allometry has been considered a hallmark of sexual selection whereby larger males of superior condition develop disproportionately larger ornaments for their body size compared to smaller males of poorer condition. Yet many structures known to be sexually selected often exhibit other allometric patterns. This has led to controversy over the utility of allometry in adequately capturing the ...
DOI:
10.1111/1365-2435.13968

13. Age, growth, and sexual dimorphism of the Southern Hemisphere long-finned pilot whale (Globicephala melas edwardii)

Author:
Emma L. Betty; Karen A. Stockin; Bethany Hinton; Barbara A. Bollard; Adam N.H. Smith; Mark B. Orams; Sinéad Murphy
Source:
Journal of mammalogy 2022 v.103 no.3 pp. 560-575
ISSN:
0022-2372
Subject:
Globicephala melas; allometry; coasts; females; growth models; longevity; males; mammalogy; mortality; regression analysis; sexual dimorphism; sexual maturity; social behavior; tail; New Zealand
Abstract:
... Knowledge of population biological parameters can contribute to assessing the resilience of a population in the face of increasing anthropogenic pressures. Southern Hemisphere long-finned pilot whales (Globicephala melas edwardii) are susceptible to high rates of live stranding-related mortality. However, the biological parameters of this population largely are unknown. In this study, age, growth, ...
DOI:
10.1093/jmammal/gyab165

14. Allometric Changes and Shape Comparisons of Two Southwestern Sucker Species and Their Hybrids Using a Geometric Morphometric Approach

Author:
Pilar N. Wolters‐Rinker; David L. Rogowski; Alice C. Gibb
Source:
Transactions of the American Fisheries Society 2022 v.151 no.5 pp. 630-640
ISSN:
0002-8487
Subject:
Catostomus latipinnis; Xyrauchen texanus; allometry; females; fish; geometry; habitat destruction; hybridization; juveniles; males; morphometry; watersheds; Colorado River
Abstract:
... Hybridization between two sucker species, Razorback Sucker Xyrauchen texanus and Flannelmouth Sucker Catostomus latipinnis, historically has occurred but has been facilitated by anthropogenic habitat alteration. The ability to differentiate Razorback Suckers from Flannelmouth Suckers and hybrids is essential for the conservation and management of the endangered Razorback Sucker. The purpose of our ...
DOI:
10.1002/tafs.10380

15. Allometry and condition factor of whipfin silverbiddy, Gerres filamentosus from Mangalore Coast, Karnataka, India

Author:
N. Narasimhaiah; K.P. Rajashekar; S.M. Shivaprakash; S. Yambem Tenjing
Source:
Indian journal of animal research 2021 v.55 no.3 pp. 324-332
ISSN:
0976-0555
Subject:
Gerres; Gerridae; allometry; analysis of covariance; animal research; coasts; condition factor; ecosystems; equations; fish; fisheries; males; sustainable fisheries; India
Abstract:
... Gerrids under family Gerridae are important in contributing rich source of protein. Gerres species are economically important food in India. They take a good role in development and economic of Indian estuaries. In fish biology, knowledge of the length-weight data and condition factor (Kn) is an important tool. Gerres filamentosus is one of the economically important groups of fishes inhabiting Ka ...
DOI:
10.18805/IJAR.B-3983

16. Biological Characteristics of the Invasive Gambusia holbrooki in the Wetland, the Lake Van Basin, Turkey

Author:
A. A. Atici; A. Sepil; F. Sen
Source:
Journal of ichthyology 2022 v.62 no.4 pp. 594-604
ISSN:
0032-9452
Subject:
Gambusia holbrooki; allometry; basins; condition factor; eggs; fauna; females; fish; freshwater; ichthyology; invasive species; lakes; males; reproductive performance; wetlands
Abstract:
... Gambusia holbrooki (Girard, 1859) is worldwide spread invasive fish species and is found in the wetland, the Lake Van basin. This study was carried out to determine the biological characteristics of G. holbrooki. A total of 544 specimens were caught by electrofishing between August 2019 and July 2020. The maximum total length were 5.52 cm for females and 3.10 cm for males. The length–weight relati ...
DOI:
10.1134/S0032945222040014

17. Determination of the mature weight of intact male hair sheep

Author:
M. S. Mendes; R. N. B. Lôbo; C. J. L. Herbster; J. G. Souza; J. P. P. Rodrigues; M. I. Marcondes; E. S. Pereira
Source:
Journal of agricultural science 2021 v.159 no.9-10 pp. 757-761
ISSN:
1469-5146
Subject:
agricultural sciences; allometry; ash content; body composition; body weight; lipid content; males; models; protein content; sheep; standard deviation; water content
Abstract:
... The objective of this study is to provide approaches to determine the mature weight of intact male hair sheep using body composition data. To estimate empty body weight (EBW) at maturity, we used information from eight independent studies comprising a total of 250 intact males in growing and finishing phases. The quantitative data used for each animal were body weight (BW), EBW, water-free EBW pro ...
DOI:
10.1017/S0021859621001064

18. Does a male nest builder have the same head shape as his mate? Sexual dimorphism in Leptodactylus fuscus (Anura: Leptodactylidae)

Author:
Daniel de Abreu e Melo-Moreira; Roberta Azeredo Murta-Fonseca; Conrado Aleksander Barbosa Galdino; Luciana Barreto Nascimento
Source:
Zoologischer Anzeiger 2021 v.295 pp. 23-33
ISSN:
0044-5231
Subject:
Leptodactylus; allometry; discriminant analysis; foams; geometry; head; males; morphometry; nests; oviposition; principal component analysis; sexual dimorphism
Abstract:
... Males of Leptodactylus fuscus (Schneider, 1799) construct subterranean chambers with the snout. The chamber is used for oviposition in a foam nest. Due to this behaviour, it's inferred that there are different selective pressures according the sex. We aimed to evaluate the occurrence of sexual dimorphism in the head shape of L. fuscus through geometric morphometrics analysis of 97 specimens (51 ma ...
DOI:
10.1016/j.jcz.2021.09.004

19. Effect of eco-physiological factors on biometric traits of green mussel Perna viridis cultured in the south-east coast of the Bay of Bengal, Bangladesh

Author:
Aysha Rahi Noor; Abrar Shakil; Nayeema Ferdausy Hoque; Md Moshiur Rahman; Sumi Akter; Avijit Talukder; Sk Ahmad-Al-Nahid; Md Abdul Wahab; Md Nahiduzzaman; Md Jalilur Rahman; Md Asaduzzaman
Source:
Aquaculture reports 2021 v.19 pp. 100562
ISSN:
2352-5134
Subject:
Perna viridis; allometry; aquaculture; biodiversity conservation; biometry; coasts; correlation; data collection; dimensions; discriminant analysis; ecophysiology; environmental factors; females; food availability; gonadosomatic index; height; information; ingestion; knowledge; length; males; mussels; oxygen; plankton; principal component analysis; regression analysis; salinity; temperature; tissue weight; tissues; turbidity; variability; weight; width; Bangladesh; Bay of Bengal
Abstract:
... Information on allometry, condition indices (CIs), and biometric traits (BTs) of marine bivalves are necessary for determining the growth pattern and the size at which harvest can be intensified to maximize production in aquaculture. These parameters of marine bivalves are largely regulated by the complex interactive effects of various ecological and physiological factors. Therefore, the present s ...
DOI:
10.1016/j.aqrep.2020.100562

20. Effects on running speed of changes in sexual size dimorphism at maturity on in the cursorial huntsman spider, Delena cancerides (Sparassidae)

Author:
Jacob A. Hurst; Linda S. Rayor
Source:
Journal of comparative physiology 2021 v.207 no.2 pp. 269-277
ISSN:
0340-7594
Subject:
Sparassidae; adults; allometry; body weight; females; instars; males; molting; morphometry; predation; risk; sexual dimorphism; sexual maturity; spiders
Abstract:
... Running speed is a measure of whole-organism performance reflecting relative fitness. For spiders, increased speed translates into enhanced prey capture, mating success and reduced predation risk. In male spiders, leg length increases dramatically with the molt to sexual maturity. To determine how changes in leg length and body mass with sexual maturity influence running performance, we compared a ...
DOI:
10.1007/s00359-021-01469-3

21. Estimation of life history parameters for river catfish Eutropiichthys vacha: insights from multi-models for sustainable management

Author:
Dalia Khatun; Md. Yeamin Hossain; Obaidur Rahman; Md. Firose Hossain
Source:
Heliyon 2022 v.8 no.10 pp. e10781
ISSN:
2405-8440
Subject:
Eutropiichthys vacha; allometry; body weight; catfish; females; habitats; life history; males; mortality; protein sources; riparian areas; rivers; sex ratio; Bangladesh; Ganges River
Abstract:
... The river catfish, Eutropiichthys vacha is a vital protein source for rural communities and has high commercial value, but understanding its life history and management strategies reveals major inadequacies and ambiguities in the riverine ecosystems. Consequently, this study employs multi-models to analyze the life history parameters of E. vacha in the Ganges River (northwestern Bangladesh) from J ...
DOI:
10.1016/j.heliyon.2022.e10781

22. The First Insight into the Patterns of Size and Shape Variation of a Microcerberid Isopod

Author:
Jeongho Kim; Jaehyun Kim; Wonchoel Lee; Ivana Karanovic
Source:
Water 2021 v.13 no.4 pp. -
ISSN:
2073-4441
Subject:
Isopoda; Japan; allometry; animals; cryptic species; fauna; geometry; males; morphometry; new species; quantitative analysis; sensilla; water; Korean Peninsula
Abstract:
... Cryptic species are a biological phenomenon only recently recognized due to progress in molecular studies. They pose a significant challenge to conventional taxonomic work since these species manifest low morphological differences, but considerable genetic disparity. New taxonomic methods are in development but have yet to be tested for many animal groups. Isopods belonging to the suborder Microce ...
DOI:
10.3390/w13040515

23. Length-weight relationship, sex ratio, mortality and growth condition of natural stock of Macrobrachium rosenbergii from the estuarine systems of North Kalimantan, Indonesia

Author:
AGUS INDARJO; Gazali Salim; CHRISTINE DYTA NUGRAENI; MUFRIDA ZEIN; JULIAN RANSANGAN; LUKMAN YUDHO PRAKOSO; SUHIRWAN; SUTRISNO ANGGORO
Source:
Biodiversitas 2021 v.22 no.2 pp. -
ISSN:
2085-4722
Subject:
Borneo; Macrobrachium rosenbergii; allometry; condition factor; estuaries; females; males; mortality; sex ratio; shrimp fisheries; socioeconomic development; sustainable fisheries; villages; zein; Indonesia
Abstract:
... Indarjo A, Salim G, Nugraeni CD, Zein M, Ransangan J, Prakoso LY, Suhirwan, Anggoro S. 2021. Length-weight relationship, sex ratio, mortality and growth condition of natural stock of Macrobrachium rosenbergii from the estuarine systems of North Kalimantan, Indonesia. Biodiversitas 22: 846-857. Giant prawns (Macrobrachium rosenbergii) in North Kalimantan Province, Indonesia are commonly found inhab ...
DOI:
10.13057/biodiv/d220239

24. Length–weight relationship and condition factor of the mudskipper (Periophthalmus modestus) in the Red River Delta

Author:
Hau Duc Tran; Hai Hong Nguyen; Linh Manh Ha
Source:
Regional studies in marine science 2021 v.46 pp. 101903
ISSN:
2352-4855
Subject:
Periophthalmus; adults; allometry; animal growth; biodiversity; condition factor; conservation areas; estuaries; females; fish; males; mangrove forests; marine science; national parks; river deltas; sex ratio; wetlands; Vietnam
Abstract:
... Periophthamus modestus is an amphibious fish that inhabits mudflats along the Northwest Pacific, including Vietnam. Knowledge about the length–weight relationship (LWR) and condition factor (K) is important for assessment and management of fish resources, but they are poorly known for P. modestus. The goal of this study was to examine the variation of the LWR and K among sexes, developmental stage ...
DOI:
10.1016/j.rsma.2021.101903

25. Length–weight relationship, condition factor, sex ratio and size at first maturity of the blue‐spotted tilapia (Oreochromis leucostictus) in Lake Naivasha, Kenya

Author:
Laurent Cishahayo; Edwine Yongo; Eunice Mutethya; Edna Waithaka; Rose Ndayishimiye
Source:
Lakes & reservoirs 2022 v.27 no.3 pp. e12417
ISSN:
1320-5331
Subject:
Oreochromis; allometry; condition factor; females; fish; habitat destruction; lakes; males; pollution; sex ratio; Kenya
Abstract:
... Oreochromis leucostictus is a commercially important tilapiine in Lake Naivasha, with its stocks having declined because of the effects of fishing, habitat degradation and pollution. The present study investigated its length–weight relationship, condition factor, sex ratio and maturity. Fish samples (233) were collected during 2017, with each fish measured (cm), weighed (g) and analysed for maturi ...
DOI:
10.1111/lre.12417

26. Life-history traits of the marbled electric ray, Torpedo marmorata Risso, 1810, from the Greek Seas, north-eastern Mediterranean Sea

Author:
Archontia Chatzispyrou; Chrysoula Gubili; Konstantinos Touloumis; Dimitrios Karampetsis; Serafeim Kioulouris; Aikaterini Anastasopoulou; Aristeidis Christidis; Panagiota Peristeraki; Ioannis E. Batjakas; Constantin Koutsikopoulos
Source:
Environmental biology of fishes 2021 v.104 no.12 pp. 1575-1592
ISSN:
0378-1909
Subject:
Torpedo marmorata; allometry; autumn; conservation status; data collection; diet; females; frequency distribution; life history; males; sex ratio; sexual dimorphism; sexual maturity; spring; stomach; Aegean Sea; Mediterranean Sea
Abstract:
... This work presents new information on the morphological aspects, reproductive biology and diet of the marbled electric ray Torpedo marmorata Risso 1810, in the Eastern Ionian and the Aegean Seas, from October 2017 to August 2020. The whole dataset consisted of 135 females and 109 males, ranging between 91–464 mm and 99–313 mm in total length (TL), respectively. The weight–length relationship of th ...
DOI:
10.1007/s10641-021-01174-9

27. A Morphometric Assessment of the Condition of White Croakers (Genyonemus Lineatus) and Queenfish (Seriphus Politus) with Access to a Wastewater Outfall and a DDT/Polychlorinated Biphenyl Superfund Site: A Los Angeles Outer Harbor Case Study

Author:
Ochan Otim
Source:
Environmental toxicology and chemistry 2022 v.41 no.2 pp. 410-425
ISSN:
0730-7268
Subject:
Genyonemus; allometry; bioaccumulation; body weight; case studies; chemistry; ecotoxicology; equations; females; fish; males; marine ecosystems; morphometry; polychlorinated biphenyls; rivers; stormwater; wastewater
Abstract:
... Sediments and water columns in the Los Angeles Outer Harbor (CA, USA), a major port behind a breakwater, contain DDTs and polychlorinated biphenyls (PCBs) from a nearby Superfund site, and contaminants brought in by ships, boats, stormwater, a river, and a wastewater outfall. White croaker and queenfish, a bottom feeder and a water column feeder, respectively, are two bioindicators for this marine ...
DOI:
10.1002/etc.5262

28. Population parameters of the orange mud crab Scylla olivacea (Herbst, 1796) from the Sundarban mangrove forest in Bangladesh

Author:
Muhammad Abdur Rouf; Sheik Istiak Md Shahriar; Al-Hasan Antu; Md Noman Siddiqui
Source:
Heliyon 2021 v.7 no.2 pp. e06223
ISSN:
2405-8440
Subject:
Scylla olivacea; allometry; crabs; females; males; mangrove forests; mortality; sex ratio; Bangladesh
Abstract:
... Population parameters of orange mud crab (Scylla olivacea) were estimated, aiming to determine sex ratios, carapace width-body weight (CW-BW) relationships, asymptotic width (CW∝), growth coefficient (K), mortality (Z, M, and F), recruitment and level of exploitation (E) in the Sundarban mangrove forest, located in the south-western part of Bangladesh. Year-round samples were collected using hook- ...
DOI:
10.1016/j.heliyon.2021.e06223

29. Reproductive Apparatus, Gonadic Maturation, and Allometry of Cyclocephala barrerai Martínez (Coleoptera: Melolonthidae: Dynastinae)

Author:
Abraham Sanchez-Cruz; Daniel Tapia-Maruri; Alfredo Jiménez-Pérez
Source:
Insects 2022 v.13 no.7 pp. -
ISSN:
2075-4450
Subject:
Cyclocephala; adults; allometry; bulbs; females; males; regression analysis; reproduction; reproductive system; Mexico
Abstract:
... The Order Coleoptera provides good examples of morphological specializations in the reproductive apparatus, gonadic maturation, and allometry differing between the sexes. The female and male reproductive apparatus has been modified to ensure reproduction between individuals of the same species. The genus Cyclocephala has more than 500 species distributed in America, and Cyclocephala barrerai Martí ...
DOI:
10.3390/insects13070638

30. Seasonal variation in biometric parameters in a population of the endangered blue land crab (Cardisoma guanhumi): Indicators for assessment and management

Author:
M.C. Lima; C.A.M. Pereira; M.S.L.C. Araújo; G.G. Rodrigues; G. Nicacio
Source:
Regional studies in marine science 2021 v.45 pp. 101804
ISSN:
2352-4855
Subject:
Cardisoma guanhumi; allometry; aquatic organisms; biometry; condition factor; crabs; dry season; formalin; gene flow; gonads; hepatopancreas; males; marine protected areas; marine science; population structure; seasonal variation; traditional technology; Brazil
Abstract:
... Cardisoma guanhumi is a land decapod crustacean distributed along the eastern Atlantic. Currently, this species is included in the Brazilian list of aquatic species overexploited or threatened with overexploitation. This study performed biometric analysis and assessed reproductive dynamics of the blue land crab Cardisoma guanhumi in Acaú-Goiana Extractive Reserve, a coastal marine protected area i ...
DOI:
10.1016/j.rsma.2021.101804

31. Sexual dimorphism and static allometry in the South African scorpion Opistophthalmus karrooensis

Author:
Jacobus H. Visser; Sjirk Geerts
Source:
Arachnology 2021 v.18 no.9 pp. 1057-1063
ISSN:
2050-9936
Subject:
Scorpiones; allometry; life history; males; reproductive performance; sedentary lifestyle; sexual dimorphism; sexual selection
Abstract:
... Sexual dimorphism in scorpions is generally retrieved for a similar subset of body parts and is presumed to result from alternative types of selection operating on homologous structures in each sex. Even so, investigations which use static allometry as a method for testing specific hypotheses relating to selection remain limited. Sexual dimorphism in the majority of South African scorpion species ...
DOI:
10.13156/arac.2021.18.9.1057

32. Sexual dimorphism in the dioecious willow Salix purpurea

Author:
Fred E. Gouker; Craig H. Carlson; Junzhu Zou; Luke Evans; Chase R. Crowell; Christine D. Smart; Stephen P. DiFazio; Lawrence B. Smart
Source:
American journal of botany 2021 v.108 no.8 pp. 1374-1387
ISSN:
0002-9122
Subject:
Melampsora; Salix purpurea; allometry; bioenergy; biomass production; dioecy; evolution; fertilizers; males; nitrogen; phenology; sequence diversity; sex chromosomes; sexual dimorphism; wood
Abstract:
... PREMISE: The evolution of sex chromosomes is driven by sexual dimorphism, yet it can be challenging to document sexually dimorphic traits in dioecious plant species. At the genetic level, sexual dimorphism can be identified through sequence variation between females and males associated with sexually antagonistic traits and different fitness optima. This study aims to examine sexual dimorphism for ...
Handle:
10113/7709364
DOI:
10.1002/ajb2.1704

33. Size and shape variation in the male dimorphic head weapons of an anthribid weevil (Hoherius meinertzhageni)

Author:
Christina J. Painting
Source:
Evolutionary ecology 2022 v.36 no.4 pp. 643-662
ISSN:
0269-7653
Subject:
Curculionidae; allometry; body size; dimorphism; geometry; head; intraspecific variation; males; morphometry; sexual selection
Abstract:
... Allometry is a common technique used by biologists to quantify and describe the exaggerated sexually selected traits of beetles. While horned species have dominated studies documenting weapon evolution among beetles, there is remarkable diversity in weapon type, including enormous mandibles, robust hind legs and elongated rostra. Here, I characterise intrasexual and intraspecific variation in body ...
DOI:
10.1007/s10682-021-10127-8

34. Some biological aspects of the Silurid Catfish, Bagrus docmak (Forksskal, 1775) in Lake Victoria, Kenya

Author:
Edwine Yongo; Simon Agembe
Source:
Lakes & reservoirs 2021 v.26 no.3 pp. e12371
ISSN:
1320-5331
Subject:
Bagrus docmak; allometry; catfish; detritus; diet; ecosystems; feed formulation; females; formalin; gillnets; lakes; males; ontogeny; predation; sex ratio; stomach; Kenya; Lake Victoria
Abstract:
... Bagrus docmak is indigenous to Lake Victoria, being an important source of economic livelihoods to communities around the lake. Although its stocks in the lake are facing intense fishing, predation and ecological changes, data on its biological aspects are scanty, being the basis for the current study. Fish samples for the present study were collected using gillnets of 10‐ and 50‐mm mesh sizes. Th ...
DOI:
10.1111/lre.12371

35. Some population characteristics of Oxynoemacheilus angorae (Steindachner, 1897) from the Perşembe Plateau meandering streams in Ordu, Turkey

Author:
Serdar Yedier; Derya Bostanci; Nazmi Polat
Source:
Fisheries & Aquatic Life 2021 v.29 no.2 pp. 100-107
ISSN:
2545-059X
Subject:
Oxynoemacheilus; allometry; body weight; condition factor; confidence interval; equations; females; fish; habitats; males; Black Sea
Abstract:
... The aim of the current study was to determine the length-weight relationship (LWR) and length-length relationship (LLR) with condition factor (K) values for Oxynoemacheilus angorae from the Perşembe Plateau meandering streams in Ordu, Turkey. A total of 65 fish specimens, which were caught with electrofishing gear, were examined. Fish standard length (SL), fork length (FL), total length (TL), and ...
DOI:
10.2478/aopf-2021-0012

36. Static allometry and sexual dimorphism in the Striped Lesser-thicktail Scorpion Uroplectes lineatus

Author:
Jacobus H. Visser; Sjirk Geerts
Source:
Arachnology 2021 v.18 no.7 pp. 700-707
ISSN:
2050-9936
Subject:
Scorpiones; allometry; courtship; females; males; morphometry; reproductive performance; sexual dimorphism; sexual selection
Abstract:
... Scorpions exhibit extreme forms of sexual dimorphism, with a number of recent studies highlighting general patterns. Explanations surrounding the potential drivers of these patterns remain speculative, even though static allometry offers a method for testing specific hypotheses. Importantly, a recent study describes a method of reference character choice when investigating sexual dimorphism and st ...
DOI:
10.13156/arac.2020.18.7.700

37. Variability and Morphological Features of Woolly Rhinoceros Skulls (Coelodonta antiquitatis (Blumenbach 1799)) from Northeastern Asia in the Late Pleistocene

Author:
A. Y. Puzachenko; I. V. Kirillova; F. K. Shidlovsky; V. A. Levchenko
Source:
Biology bulletin of the Russian Academy of Sciences 2021 v.48 no.Supplement 1 pp. S185
ISSN:
1062-3590
Subject:
Pleistocene epoch; Rhinoceros; Siberia; allometry; carbon radioisotopes; females; males; multivariate analysis; sexual dimorphism; skull
Abstract:
... We studied 63 woolly rhinoceros skulls from the northeast of Russia (northwestern Chukotka, northeastern Yakutia) housed in the collection of the “Ice Age” Museum-Theatre, Moscow. Both sexual dimorphism and size/shape variability of woolly rhinoceros skulls are explored using univariate and multivariate statistics for the first time. Peculiarities of the variability, which are probably related to ...
DOI:
10.1134/S1062359021140144

38. The pulmonary and metabolic effects of suspension by the feet compared with lateral recumbency in immobilized black rhinoceroses (diceros bicornis) captured by aerial darting

Author:
Robin W. Radcliffe; Mark Jago; Peter vdB Morkel; Estelle Morkel; Pierre du Preez; Piet Beytell; Birgit Kotting; Bakker Manuel; Jan Hendrik du Preez; Michele A. Miller; Julia Felippe; Stephen A. Parry; Robin D. Gleed
Source:
Journal of wildlife diseases 2021 v.57 no.2 pp. 357-367
ISSN:
0090-3558
Subject:
Ceratotherium simum; Diceros bicornis; allometry; azaperone; body weight; carbon dioxide; carbon dioxide production; etorphine; females; gas exchange; lung function; males; oxygen; posture; tidal volume; wildlife
Abstract:
... Aerial translocation of captured black rhinoceroses (Diceros bicornis) has been accomplished by suspending them by their feet. We expected this posture would compromise respiratory gas exchange more than would lateral recumbency. Because white rhinoceroses (Ceratotherium simum) immobilized with etorphine alone are hypermetabolic, with a high rate of carbon dioxide production (VCO₂), we expected im ...
DOI:
10.7589/2019-08-202

39. Acute effects of Nitrosigine® and citrulline malate on vasodilation in young adults

Author:
Jeffrey M. Rogers; Joshua Gills; Michelle Gray
Source:
Journal of the International Society of Sports Nutrition 2020 v.17 no.1 pp. 12
ISSN:
1550-2783
Subject:
allometry; athletic performance; blood flow; citrulline; digestion; females; glucose; malates; males; physical activity; placebos; skeletal muscle; ultrasonics; vasodilation
Abstract:
... BACKGROUND: Athletes are increasingly exploring ways to enhance their physical performance. Increasing blood flow to the working tissues through endothelium-dependent vasodilation is one factor athletes use to realize these results. Sports supplements such as pre-workouts tout this benefit; however, many have not been tested under laboratory conditions to examine the effects of commonly used suppl ...
DOI:
10.1186/s12970-020-00343-y

40. Antennomere numbers in fireflies (Coleoptera: Lampyridae): unique patterns and tentative explanations

Author:
V.C.S. Nunes; P.M. Souto; A. Minelli; K.F. Stanger-Hall; L.F.L. Silveira
Source:
Zoologischer Anzeiger 2020 v.286 pp. 1-10
ISSN:
0044-5231
Subject:
Lampyridae; allometry; antennae; asymmetry; body size; intraspecific variation; males; phenotype; species diversity
Abstract:
... The plesiomorphic antenna with eleven articles is stunningly stable across the over 400.000 beetle species, despite the astonishing diversity of morphologies and ecological settings in which these organisms live. However, a few beetle lineages evolved different antennomere numbers, and these offer an interesting opportunity to understand how an otherwise fixed phenotype may eventually change, and ...
DOI:
10.1016/j.jcz.2020.02.006

41. Biology and population dynamics of the freshwater puffer fish, Tetraodon lineatus (Linnaeus, 1758), from the River Nile, Aswan, Egypt

Author:
Khaled Y. AbouelFadl; Mahmoud M.S. Farrag
Source:
Egyptian Journal of Aquatic Research (Online) 2021 v.47 no.1 pp. 75-80
ISSN:
1687-4285
Subject:
Tetraodon; allometry; body length; body weight; females; fish; freshwater; gonadosomatic index; growth performance; growth rings; hepatosomatic index; longevity; males; population dynamics; sex ratio; spawning; toxicology; vertebrae; Egypt; Nile River
Abstract:
... A fresh water pufferfish Tetraodon lineatus in Egypt has limited information available. A total of 350 specimens were collected monthly from the river Nile, Aswan (2019). Specimens were 13.5–38.5 cm in total length with an average of 22.16 ± 5.02 cm and a total weight of 61.7–1456 g with an average of 339.86 ± 248.85 g. The length-weight relationship showed negative allometric growth, and both abs ...
DOI:
10.1016/j.ejar.2020.09.005

42. Comparative sexual selection in field and laboratory in a guild of sepsid dung flies

Author:
Wolf U. Blanckenhorn; Julian Baur; Jeannine Roy; Nalini Puniamoorthy; Juan Pablo Busso; Martin A. Schäfer; Patrick T. Rohner
Source:
Animal behaviour 2021 v.175 pp. 219-230
ISSN:
0003-3472
Subject:
Sepsidae; allometry; animal behavior; captive animals; feces; females; femur; males; sexual dimorphism; sexual selection
Abstract:
... Phenomenological and behavioural studies have greatly advanced the study of natural selection. Field studies of selection well appraise the natural situation, but is this also true for laboratory studies, which are typically more mechanistic? We compared precopulatory sexual selection (mating differential based on pairing success) in field and laboratory of several closely related, ecologically si ...
DOI:
10.1016/j.anbehav.2021.03.001

43. Diet of the European badgers (Meles meles) in urban and rural areas of Norway

Author:
Duarte J. Gomes; Izabela A. Wierzbowska; Kjetil Bevanger; Declan T. O’Mahony; Kaja Rola
Source:
European journal of wildlife research 2020 v.66 no.1 pp. 7
ISSN:
1612-4642
Subject:
Meles meles; allometry; autumn; badgers; birds; diet; earthworms; females; fruits; grains; habitats; humans; insects; males; omnivores; rural areas; seasonal variation; small mammals; spring; stomach; summer; urban areas; wildlife; Norway
Abstract:
... The constant expansion of urban habitats provides new opportunities for various wildlife species, referred to as urban exploiters or adapters that allow them to thrive in new conditions. The Eurasian badger (Meles meles) can adapt to and exploit urban ecosystems due to its omnivorous behaviour but the species expansion into this habitat can cause conflict with humans, and there is a paucity of dat ...
DOI:
10.1007/s10344-019-1347-6

44. Echocardiographic variables in the african painted dog (lycaon pictus)

Author:
Monica Tschosik; Simon Swift; Natalie Hall
Source:
Journal of zoo and wildlife medicine 2020 v.51 no.3 pp. 668-671
ISSN:
1937-2825
Subject:
Lycaon pictus; adults; allometry; anesthesia; body weight; butorphanol; clinical examination; dogs; echocardiography; heart valve diseases; isoflurane; males; medicine; wildlife; zoos
Abstract:
... The aim of this study was to screen for cardiac disease and report normal echocardiographic variables from a managed population of the African painted dog (Lycaon pictus; APD). The study included six male adult APDs under managed care with no evidence of significant structural cardiac disease. Echocardiography was performed with APD maintained under anesthesia with a combination of midazolam, buto ...
DOI:
10.1638/2020-0004

45. Estimation of selected biological parameters of the Purple Mangrove Crab Goniopsis pelii (Herklots 1851) from a tropical mangrove swamp in Nigeria

Author:
R.O. Moruf
Source:
Ruhuna journal of science 2020 v.11 no.1 pp. 13-22
ISSN:
2536-8400
Subject:
Protozoa; allometry; condition factor; crabs; detritus; eggs; fecundity; females; males; mangrove ecosystems; sex ratio; swamps; Nigeria
Abstract:
... The Purple Mangrove Crab, Goniopsis pelii is one of the more elusive crab species inhabiting most of the microhabitats in the mangrove ecosystem of Southern Nigeria. This study was carried out to investigate the size composition, growth pattern, diets, and reproductive biology of G. pelii from Abule-Eledu mangrove swamp in Lagos Lagoon, Nigeria. A total of 116 specimens were studied. Data revealed ...
DOI:
10.4038/rjs.v11i1.83

46. Evaluation of Hybridization in Two African Catfishes (Siluriformes, Clariidae): Exotic (Clarias gariepinus Burchell, 1822) and Native (Clarias jaensis Boulenger, 1909) Species under Controlled Hatchery Conditions in Cameroon

Author:
Claudine Tekounegning Tiogué; Paulin Nyadjeu; Simplice Raymond Mouokeu; Guegang Tekou; Hilaire Tchoupou
Source:
Advances in agriculture 2020 v.2020 pp. -
ISSN:
2314-7539
Subject:
Clarias gariepinus; agriculture; allometry; captive animals; condition factor; females; hatcheries; heterosis; hybridization; hybrids; larvae; males; survival rate; Cameroon
Abstract:
... The study was conducted to evaluate reciprocal hybridizations in the African catfishes Clarias gariepinus and Clarias jaensis using artificial reproduction under controlled hatchery conditions. The results revealed that the highest fertilization (82.77%) and hatching (67.77%) rates were achieved in the hybrid cross female C. jaensis × male C. gariepinus (Fcj × Mcg). Deformed larvae rates ranged fr ...
DOI:
10.1155/2020/8985424

47. Evolution of reproductive structures for in‐flight mating in thynnine wasps (Hymenoptera: Thynnidae: Thynninae)

Author:
Thomas L. Semple; Marta Vidal‐García; Nikolai J. Tatarnic; Rod Peakall
Source:
Journal of evolutionary biology 2021 v.34 no.9 pp. 1406-1422
ISSN:
1010-061X
Subject:
Hymenoptera; allometry; body size; copulation; female genitalia; females; males; morphometry; phylogeny; reproductive isolation; reproductive success; sexual selection; Australasian region; South America
Abstract:
... Thynnine wasps have an unusual mating system that involves concurrent in‐flight copulation and nuptial feeding of wingless females by alate males. Consequently, thynnine genitalia play a multifunctional role and have likely been subject to various different selective pressures for both reproductive success and food provisioning. Here, we present a new molecular phylogeny for the Australian Thynnin ...
DOI:
10.1111/jeb.13902

48. Exaggerated sexually selected weapons maintained with disproportionately low metabolic costs in a single species with extreme size variation

Author:
Ummat Somjee; Erin C. Powell; Anthony J. Hickey; Jon F. Harrison; Christina J. Painting
Source:
Functional ecology 2021 v.35 no.10 pp. 2282-2293
ISSN:
0269-8463
Subject:
Brentidae; Ursidae; allometry; arthropods; body size; body weight; cost effectiveness; females; males; mating competitiveness; metabolism; New Zealand
Abstract:
... Larger individuals typically have lower mass‐specific metabolic rates compared to small ones (hypometric scaling). This trend is most evident across species where body size differences can be extreme. Yet, within‐species studies are critical to decipher the morphological and physiological mechanisms responsible. However, in most species, the relatively small range in body and appendage size of the ...
DOI:
10.1111/1365-2435.13888

49. Female reproductive mode shapes allometric scaling of male traits in live‐bearing fishes (family Poeciliidae)

Author:
Andrew I. Furness; Andres Hagmayer; Bart J. A. Pollux
Source:
Journal of evolutionary biology 2021 v.34 no.7 pp. 1144-1155
ISSN:
1010-061X
Subject:
Poeciliopsis; Retropinna; allometry; color; courtship; embryogenesis; females; males; sexual selection; sympatry
Abstract:
... Reproductive mode is predicted to influence the form of sexual selection. The viviparity‐driven conflict hypothesis posits that a shift from lecithotrophic (yolk‐nourished) to matrotrophic (mother‐nourished or placental) viviparity drives a shift from precopulatory towards post‐copulatory sexual selection. In lecithotrophic species, we predict that precopulatory sexual selection will manifest as m ...
DOI:
10.1111/jeb.13875

50. Growth and Sex Ratio of Octopus Paroctopus Digueti (Perrier & Rochebrune, 1894) in a Wild Population

Author:
Salvador Granados-Alcantar; Ruth Escamilla-Montes; Genaro Diarte-Plata; Jesús A. Fierro-Coronado
Source:
Croatian journal of fisheries 2020 v.78 no.2 pp. 53-68
ISSN:
1848-0586
Subject:
Octopodidae; age; allometry; autumn; computer software; equations; females; fisheries; growth curves; length; males; models; organisms; population; research; sex ratio; spring; summer; weight; winter; Mexico
Abstract:
... In Mexico, studies of octopus Paroctopus digueti are scarce, thus the objective of this research is to evaluate some of its biological aspects in Ohuira Bay, Ahome, Sinaloa, Mexico. From autumn 2016 to autumn 2017, a total of 217 organisms of P. digueti were collected, from which 166 were females, 31 ovigerous females and 20 males. The lengths of the mantle (ML), tentacles or arms (AL) and total l ...
DOI:
10.2478/cjf-2020-0006