Ecological and evolutionary consequences of alternative sex-change pathways in fish

Abstract Sequentially hermaphroditic fish change sex from male to female (protandry) or vice versa (protogyny), increasing their fitness by becoming highly fecund females or large dominant males, respectively. These life-history strategies present different social organizations and reproductive mode...

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Autores principales:	C. Benvenuto, I. Coscia, J. Chopelet, M. Sala-Bozano, S. Mariani
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6cead90da41149f4962141451385f72a
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spelling	oai:doaj.org-article:6cead90da41149f4962141451385f72a2021-12-02T15:04:59ZEcological and evolutionary consequences of alternative sex-change pathways in fish10.1038/s41598-017-09298-82045-2322https://doaj.org/article/6cead90da41149f4962141451385f72a2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09298-8https://doaj.org/toc/2045-2322Abstract Sequentially hermaphroditic fish change sex from male to female (protandry) or vice versa (protogyny), increasing their fitness by becoming highly fecund females or large dominant males, respectively. These life-history strategies present different social organizations and reproductive modes, from near-random mating in protandry, to aggregate- and harem-spawning in protogyny. Using a combination of theoretical and molecular approaches, we compared variance in reproductive success (V k) and effective population sizes (N e) in several species of sex-changing fish. We observed that, regardless of the direction of sex change, individuals conform to the same overall strategy, producing more offspring and exhibiting greater V k in the second sex. However, protogynous species show greater V k*, especially pronounced in haremic species, resulting in an overall reduction of N e compared to protandrous species. Collectively and independently, our results demonstrate that the direction of sex change is a pivotal variable in predicting demographic changes and resilience in sex-changing fish, many of which sustain highly valued and vulnerable fisheries worldwide.C. BenvenutoI. CosciaJ. ChopeletM. Sala-BozanoS. MarianiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q C. Benvenuto I. Coscia J. Chopelet M. Sala-Bozano S. Mariani Ecological and evolutionary consequences of alternative sex-change pathways in fish
description	Abstract Sequentially hermaphroditic fish change sex from male to female (protandry) or vice versa (protogyny), increasing their fitness by becoming highly fecund females or large dominant males, respectively. These life-history strategies present different social organizations and reproductive modes, from near-random mating in protandry, to aggregate- and harem-spawning in protogyny. Using a combination of theoretical and molecular approaches, we compared variance in reproductive success (V k) and effective population sizes (N e) in several species of sex-changing fish. We observed that, regardless of the direction of sex change, individuals conform to the same overall strategy, producing more offspring and exhibiting greater V k in the second sex. However, protogynous species show greater V k*, especially pronounced in haremic species, resulting in an overall reduction of N e compared to protandrous species. Collectively and independently, our results demonstrate that the direction of sex change is a pivotal variable in predicting demographic changes and resilience in sex-changing fish, many of which sustain highly valued and vulnerable fisheries worldwide.
format	article
author	C. Benvenuto I. Coscia J. Chopelet M. Sala-Bozano S. Mariani
author_facet	C. Benvenuto I. Coscia J. Chopelet M. Sala-Bozano S. Mariani
author_sort	C. Benvenuto
title	Ecological and evolutionary consequences of alternative sex-change pathways in fish
title_short	Ecological and evolutionary consequences of alternative sex-change pathways in fish
title_full	Ecological and evolutionary consequences of alternative sex-change pathways in fish
title_fullStr	Ecological and evolutionary consequences of alternative sex-change pathways in fish
title_full_unstemmed	Ecological and evolutionary consequences of alternative sex-change pathways in fish
title_sort	ecological and evolutionary consequences of alternative sex-change pathways in fish
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6cead90da41149f4962141451385f72a
work_keys_str_mv	AT cbenvenuto ecologicalandevolutionaryconsequencesofalternativesexchangepathwaysinfish AT icoscia ecologicalandevolutionaryconsequencesofalternativesexchangepathwaysinfish AT jchopelet ecologicalandevolutionaryconsequencesofalternativesexchangepathwaysinfish AT msalabozano ecologicalandevolutionaryconsequencesofalternativesexchangepathwaysinfish AT smariani ecologicalandevolutionaryconsequencesofalternativesexchangepathwaysinfish
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Ecological and evolutionary consequences of alternative sex-change pathways in fish

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