Phenotypic differentiation in a heterogeneous environment : morphological and life-history responses to ecological gradients in a livebearing fish. / Santi, Francesco; Petry, Ana Cristina; Plath, Martin; Riesch, Rudiger.

In: Journal of Zoology , Vol. 310, No. 1, 17.01.2020, p. 10-23.

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Phenotypic differentiation in a heterogeneous environment : morphological and life-history responses to ecological gradients in a livebearing fish. / Santi, Francesco; Petry, Ana Cristina; Plath, Martin; Riesch, Rudiger.

In: Journal of Zoology , Vol. 310, No. 1, 17.01.2020, p. 10-23.

Research output: Contribution to journalArticlepeer-review

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@article{d7d50749f3ca4dee9a43db950c94900f,
title = "Phenotypic differentiation in a heterogeneous environment: morphological and life-history responses to ecological gradients in a livebearing fish",
abstract = "Predicting how environmental variation drives phenotypic diversification is one of the main aims of evolutionary ecology. Yet, we still only have a limited understanding of how it drives diversity, especially when multiple factors interact. To address this issue, the superfetating livebearing fish Phalloptychus januarius (Poeciliidae) was repeatedly sampled (over a 2-year period) in four coastal lagoons in Brazil to investigate the relative contribution of different environmental factors on phenotypic patterns. We further compare our results to those reported for another poeciliid (Poecilia vivipara), which inhabits some of the same lagoons but has a drastically different reproductive strategy (no superfetation). We used a model-averaging approach to estimate the relative importance of differences in predation pressure, salinity, dissolved oxygen, pH, temperature and food availability in driving variation in body shape, life histories, and life-history proxies. We found consistent population differences in several traits, but also seasonal variation within each lagoon. Specifically, predation, oxygen availability and pH affected several different traits and played important roles in driving phenotypic differences between and amongst populations. Moreover, our study reveals differential responses in phenotypic traits to the same environmental gradients between P. januarius (this study) and P. vivipara (previous studies), and we suggest that future work should further inves- tigate differential phenotypic responses to single versus multiple concomitant selective forces, and how this affects different species.",
author = "Francesco Santi and Petry, {Ana Cristina} and Martin Plath and Rudiger Riesch",
year = "2020",
month = jan,
day = "17",
doi = "10.1111/jzo.12720",
language = "English",
volume = "310",
pages = "10--23",
journal = "Journal of Zoology ",
issn = "0952-8369",
publisher = "Wiley-Blackwell",
number = "1",

}

RIS

TY - JOUR

T1 - Phenotypic differentiation in a heterogeneous environment

T2 - morphological and life-history responses to ecological gradients in a livebearing fish

AU - Santi, Francesco

AU - Petry, Ana Cristina

AU - Plath, Martin

AU - Riesch, Rudiger

PY - 2020/1/17

Y1 - 2020/1/17

N2 - Predicting how environmental variation drives phenotypic diversification is one of the main aims of evolutionary ecology. Yet, we still only have a limited understanding of how it drives diversity, especially when multiple factors interact. To address this issue, the superfetating livebearing fish Phalloptychus januarius (Poeciliidae) was repeatedly sampled (over a 2-year period) in four coastal lagoons in Brazil to investigate the relative contribution of different environmental factors on phenotypic patterns. We further compare our results to those reported for another poeciliid (Poecilia vivipara), which inhabits some of the same lagoons but has a drastically different reproductive strategy (no superfetation). We used a model-averaging approach to estimate the relative importance of differences in predation pressure, salinity, dissolved oxygen, pH, temperature and food availability in driving variation in body shape, life histories, and life-history proxies. We found consistent population differences in several traits, but also seasonal variation within each lagoon. Specifically, predation, oxygen availability and pH affected several different traits and played important roles in driving phenotypic differences between and amongst populations. Moreover, our study reveals differential responses in phenotypic traits to the same environmental gradients between P. januarius (this study) and P. vivipara (previous studies), and we suggest that future work should further inves- tigate differential phenotypic responses to single versus multiple concomitant selective forces, and how this affects different species.

AB - Predicting how environmental variation drives phenotypic diversification is one of the main aims of evolutionary ecology. Yet, we still only have a limited understanding of how it drives diversity, especially when multiple factors interact. To address this issue, the superfetating livebearing fish Phalloptychus januarius (Poeciliidae) was repeatedly sampled (over a 2-year period) in four coastal lagoons in Brazil to investigate the relative contribution of different environmental factors on phenotypic patterns. We further compare our results to those reported for another poeciliid (Poecilia vivipara), which inhabits some of the same lagoons but has a drastically different reproductive strategy (no superfetation). We used a model-averaging approach to estimate the relative importance of differences in predation pressure, salinity, dissolved oxygen, pH, temperature and food availability in driving variation in body shape, life histories, and life-history proxies. We found consistent population differences in several traits, but also seasonal variation within each lagoon. Specifically, predation, oxygen availability and pH affected several different traits and played important roles in driving phenotypic differences between and amongst populations. Moreover, our study reveals differential responses in phenotypic traits to the same environmental gradients between P. januarius (this study) and P. vivipara (previous studies), and we suggest that future work should further inves- tigate differential phenotypic responses to single versus multiple concomitant selective forces, and how this affects different species.

U2 - 10.1111/jzo.12720

DO - 10.1111/jzo.12720

M3 - Article

VL - 310

SP - 10

EP - 23

JO - Journal of Zoology

JF - Journal of Zoology

SN - 0952-8369

IS - 1

ER -