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1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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

11. 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

12. 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

13. 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

14. 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

15. 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

16. 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

17. 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

18. 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

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