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Sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes
Sex‐specific reproductive roles contribute to sexual dimorphic morphological trait variations. In uniparental mouth‐brooding fishes, the mouth performs a reproductive function in addition to its key roles in feeding and respiration, resulting in the potential for sex‐specific functional performance...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9544576/ https://www.ncbi.nlm.nih.gov/pubmed/35638470 http://dx.doi.org/10.1111/jfb.15122 |
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author | Abecia, Janine E. Luiz, Osmar J. Crook, David A. Banks, Sam C. Wedd, Dion King, Alison J. |
author_facet | Abecia, Janine E. Luiz, Osmar J. Crook, David A. Banks, Sam C. Wedd, Dion King, Alison J. |
author_sort | Abecia, Janine E. |
collection | PubMed |
description | Sex‐specific reproductive roles contribute to sexual dimorphic morphological trait variations. In uniparental mouth‐brooding fishes, the mouth performs a reproductive function in addition to its key roles in feeding and respiration, resulting in the potential for sex‐specific functional performance trade‐offs. Trait differences related to parental care may occur when the individual matures or be restricted to periods when the parent is mouth‐brooding. This study explored sexual dimorphism and morphological trait adaptations related to feeding, breeding, respiration and locomotion performance in two paternal mouth‐brooding freshwater fishes (Glossamia aprion and Neoarius graeffei). Eight morphological traits were evaluated for sexual dimorphism (non‐brooder males vs. females) and male breeding state differences (brooders vs. non‐brooders). Male breeding state was a significant predictor of trait variation in both species. Brooders differed in buccal volume and in several feeding and locomotory traits compared to non‐brooder males. Non‐brooder males had bigger buccal volumes and relative eye diameters (G. aprion) and larger relative gape sizes (N. graeffei) compared to females, a potential response to both mouth‐brooding and feeding requirements. Although there were clear trait differences between brooder and non‐brooder males, further research is required to confirm whether individuals return to their former morphology once mouth‐brooding has ceased or if trait differences are maintained post‐brooding. This study highlights the importance of considering the potential impacts of intraspecific trait variation on the performance of critical life functions, such as feeding, respiration and locomotion across the life history. |
format | Online Article Text |
id | pubmed-9544576 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-95445762022-10-14 Sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes Abecia, Janine E. Luiz, Osmar J. Crook, David A. Banks, Sam C. Wedd, Dion King, Alison J. J Fish Biol Regular Papers Sex‐specific reproductive roles contribute to sexual dimorphic morphological trait variations. In uniparental mouth‐brooding fishes, the mouth performs a reproductive function in addition to its key roles in feeding and respiration, resulting in the potential for sex‐specific functional performance trade‐offs. Trait differences related to parental care may occur when the individual matures or be restricted to periods when the parent is mouth‐brooding. This study explored sexual dimorphism and morphological trait adaptations related to feeding, breeding, respiration and locomotion performance in two paternal mouth‐brooding freshwater fishes (Glossamia aprion and Neoarius graeffei). Eight morphological traits were evaluated for sexual dimorphism (non‐brooder males vs. females) and male breeding state differences (brooders vs. non‐brooders). Male breeding state was a significant predictor of trait variation in both species. Brooders differed in buccal volume and in several feeding and locomotory traits compared to non‐brooder males. Non‐brooder males had bigger buccal volumes and relative eye diameters (G. aprion) and larger relative gape sizes (N. graeffei) compared to females, a potential response to both mouth‐brooding and feeding requirements. Although there were clear trait differences between brooder and non‐brooder males, further research is required to confirm whether individuals return to their former morphology once mouth‐brooding has ceased or if trait differences are maintained post‐brooding. This study highlights the importance of considering the potential impacts of intraspecific trait variation on the performance of critical life functions, such as feeding, respiration and locomotion across the life history. Blackwell Publishing Ltd 2022-06-21 2022-09 /pmc/articles/PMC9544576/ /pubmed/35638470 http://dx.doi.org/10.1111/jfb.15122 Text en © 2022 The Authors. Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
spellingShingle | Regular Papers Abecia, Janine E. Luiz, Osmar J. Crook, David A. Banks, Sam C. Wedd, Dion King, Alison J. Sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes |
title | Sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes |
title_full | Sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes |
title_fullStr | Sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes |
title_full_unstemmed | Sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes |
title_short | Sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes |
title_sort | sex and male breeding state predict intraspecific trait variation in mouth‐brooding fishes |
topic | Regular Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9544576/ https://www.ncbi.nlm.nih.gov/pubmed/35638470 http://dx.doi.org/10.1111/jfb.15122 |
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