The expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.

Environmental and ecological conditions can shape the evolution of life history traits in many animals. Among such factors, food or nutrition availability can play an important evolutionary role in moderating an animal's life history traits, particularly sexually selected traits. Here, we test...

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Autores principales:	Md Moshiur Rahman, Giovanni M Turchini, Clelia Gasparini, Fernando Norambuena, Jonathan P Evans
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3bcc4f45a7ee4edba84cc029e7bef152
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spelling	oai:doaj.org-article:3bcc4f45a7ee4edba84cc029e7bef1522021-11-25T06:02:38ZThe expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.1932-620310.1371/journal.pone.0105856https://doaj.org/article/3bcc4f45a7ee4edba84cc029e7bef1522014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25170940/?tool=EBIhttps://doaj.org/toc/1932-6203Environmental and ecological conditions can shape the evolution of life history traits in many animals. Among such factors, food or nutrition availability can play an important evolutionary role in moderating an animal's life history traits, particularly sexually selected traits. Here, we test whether diet quantity and/or composition in the form of omega-3 long chain polyunsaturated fatty acids (here termed 'n3LC') influence the expression of pre- and postcopulatory traits in the guppy (Poecilia reticulata), a livebearing poeciliid fish. We assigned males haphazardly to one of two experimental diets supplemented with n3LC, and each of these diet treatments was further divided into two diet 'quantity' treatments. Our experimental design therefore explored the main and interacting effects of two factors (n3LC content and diet quantity) on the expression of precopulatory (sexual behaviour and sexual ornamentation, including the size, number and spectral properties of colour spots) and postcopulatory (the velocity, viability, number and length of sperm) sexually selected traits. Our study revealed that diet quantity had significant effects on most of the pre- and postcopulatory traits, while n3LC manipulation had a significant effect on sperm traits and in particular on sperm viability. Our analyses also revealed interacting effects of diet quantity and n3LC levels on courtship displays, and the area of orange and iridescent colour spots in the males' colour patterns. We also confirmed that our dietary manipulations of n3LC resulted in the differential uptake of n3LC in body and testes tissues in the different n3LC groups. This study reveals the effects of diet quantity and n3LC on behavioural, ornamental and ejaculate traits in P. reticulata and underscores the likely role that diet plays in maintaining the high variability in these condition-dependent sexual traits.Md Moshiur RahmanGiovanni M TurchiniClelia GaspariniFernando NorambuenaJonathan P EvansPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 8, p e105856 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Md Moshiur Rahman Giovanni M Turchini Clelia Gasparini Fernando Norambuena Jonathan P Evans The expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.
description	Environmental and ecological conditions can shape the evolution of life history traits in many animals. Among such factors, food or nutrition availability can play an important evolutionary role in moderating an animal's life history traits, particularly sexually selected traits. Here, we test whether diet quantity and/or composition in the form of omega-3 long chain polyunsaturated fatty acids (here termed 'n3LC') influence the expression of pre- and postcopulatory traits in the guppy (Poecilia reticulata), a livebearing poeciliid fish. We assigned males haphazardly to one of two experimental diets supplemented with n3LC, and each of these diet treatments was further divided into two diet 'quantity' treatments. Our experimental design therefore explored the main and interacting effects of two factors (n3LC content and diet quantity) on the expression of precopulatory (sexual behaviour and sexual ornamentation, including the size, number and spectral properties of colour spots) and postcopulatory (the velocity, viability, number and length of sperm) sexually selected traits. Our study revealed that diet quantity had significant effects on most of the pre- and postcopulatory traits, while n3LC manipulation had a significant effect on sperm traits and in particular on sperm viability. Our analyses also revealed interacting effects of diet quantity and n3LC levels on courtship displays, and the area of orange and iridescent colour spots in the males' colour patterns. We also confirmed that our dietary manipulations of n3LC resulted in the differential uptake of n3LC in body and testes tissues in the different n3LC groups. This study reveals the effects of diet quantity and n3LC on behavioural, ornamental and ejaculate traits in P. reticulata and underscores the likely role that diet plays in maintaining the high variability in these condition-dependent sexual traits.
format	article
author	Md Moshiur Rahman Giovanni M Turchini Clelia Gasparini Fernando Norambuena Jonathan P Evans
author_facet	Md Moshiur Rahman Giovanni M Turchini Clelia Gasparini Fernando Norambuena Jonathan P Evans
author_sort	Md Moshiur Rahman
title	The expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.
title_short	The expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.
title_full	The expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.
title_fullStr	The expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.
title_full_unstemmed	The expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.
title_sort	expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/3bcc4f45a7ee4edba84cc029e7bef152
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The expression of pre- and postcopulatory sexually selected traits reflects levels of dietary stress in guppies.

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