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Male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance

Male coercive mating exerts a strong evolutionary pressure on mating-related traits of both sexes. However, it is extremely rare in externally fertilizing species probably because the male mating behaviour is incomplete until females release their eggs. Here we showed that males of the externally fe...

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Autores principales: Matsumoto, Yukio, Takegaki, Takeshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4834473/
https://www.ncbi.nlm.nih.gov/pubmed/27087584
http://dx.doi.org/10.1038/srep24536
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author Matsumoto, Yukio
Takegaki, Takeshi
author_facet Matsumoto, Yukio
Takegaki, Takeshi
author_sort Matsumoto, Yukio
collection PubMed
description Male coercive mating exerts a strong evolutionary pressure on mating-related traits of both sexes. However, it is extremely rare in externally fertilizing species probably because the male mating behaviour is incomplete until females release their eggs. Here we showed that males of the externally fertilizing fish Rhabdoblennius nitidus coercively confine females to the nests until spawning, and investigated why females accept male coercive mating. The females entered the males’ nests following male courtship displays, but they usually tried to escape when there were no eggs because males tended to cannibalize all the eggs when there were few. Most males that used small, tight nests acquired new eggs but with experimentally enlarged nests, 90% of the males without eggs failed to confine the females. Spawning tended to occur during the early/late spawning period in nests with no eggs (i.e. male coercive mating). In the nests where the first eggs were deposited in the early period, subsequent matings with other females were more likely to occur, whereas in the late period, most parental care of the eggs failed without additional matings. The females that spawned in the late period may have been compelled to accept male coercive mating due to time constraints.
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spelling pubmed-48344732016-04-27 Male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance Matsumoto, Yukio Takegaki, Takeshi Sci Rep Article Male coercive mating exerts a strong evolutionary pressure on mating-related traits of both sexes. However, it is extremely rare in externally fertilizing species probably because the male mating behaviour is incomplete until females release their eggs. Here we showed that males of the externally fertilizing fish Rhabdoblennius nitidus coercively confine females to the nests until spawning, and investigated why females accept male coercive mating. The females entered the males’ nests following male courtship displays, but they usually tried to escape when there were no eggs because males tended to cannibalize all the eggs when there were few. Most males that used small, tight nests acquired new eggs but with experimentally enlarged nests, 90% of the males without eggs failed to confine the females. Spawning tended to occur during the early/late spawning period in nests with no eggs (i.e. male coercive mating). In the nests where the first eggs were deposited in the early period, subsequent matings with other females were more likely to occur, whereas in the late period, most parental care of the eggs failed without additional matings. The females that spawned in the late period may have been compelled to accept male coercive mating due to time constraints. Nature Publishing Group 2016-04-18 /pmc/articles/PMC4834473/ /pubmed/27087584 http://dx.doi.org/10.1038/srep24536 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Matsumoto, Yukio
Takegaki, Takeshi
Male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance
title Male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance
title_full Male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance
title_fullStr Male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance
title_full_unstemmed Male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance
title_short Male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance
title_sort male coercive mating in externally fertilizing species: male coercion, female reluctance and explanation for female acceptance
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4834473/
https://www.ncbi.nlm.nih.gov/pubmed/27087584
http://dx.doi.org/10.1038/srep24536
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