Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri

In viviparous organisms, pregnant females typically experience an increase in body mass and body volume. In this study, the prediction that variation in reproductive traits among populations of viviparous organisms should be related to variation among populations in body shape was tested in the Paci...

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Autores: Zúñiga-Vega, José Jaime, Suárez-Rodríguez, M, Espinosa-Pérez, H, Johnson, JB
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:México
Institución:Universidad Nacional Autónoma de México
Repositorio:Sistema de Información de la Facultad de Ciencias, UNAM
OAI Identifier:oai:repositorio.fciencias.unam.mx:11154/141131
Acceso en línea:http://hdl.handle.net/11154/141131
Access Level:acceso abierto
Palabra clave:Body shape
geometric morphometrics
life-history traits
Poeciliidae
reproduction
viviparous fishes
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spelling Morphological and reproductive variation among populations of the Pacific molly Poecilia butleriZúñiga-Vega, José JaimeSuárez-Rodríguez, MEspinosa-Pérez, HJohnson, JBBody shapegeometric morphometricslife-history traitsPoeciliidaereproductionviviparous fishesIn viviparous organisms, pregnant females typically experience an increase in body mass and body volume. In this study, the prediction that variation in reproductive traits among populations of viviparous organisms should be related to variation among populations in body shape was tested in the Pacific molly Poecilia butleri, a viviparous fish that inhabits western Mexico and northern Central America. Variation among 10 populations in four reproductive traits was examined: brood size, individual embryo mass, total reproductive allotment and degree of maternal provisioning of nutrients to developing embryos. Variation among these populations in body shape was also examined. Significant variation among populations was observed in both brood size and reproductive allotment but not in embryo mass or degree of maternal provisioning. Significant variation among populations was also observed in body shape. After correcting for female size, however, reproductive traits and body shape were not associated among populations. This suggests that selective pressures acting on reproduction do not necessarily affect morphology and vice versa. Several factors might contribute to this unexpected lack of association between reproductive traits and morphology.2013-04-05T18:45:37Z2013-04-05T18:45:37Z2013-04-05T18:45:37Z2013-04-05T18:45:37Z2011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleZúñiga-Vega, JJ; Suárez-Rodríguez, M; Espinosa-Pérez, H; Johnson, JB (2011). Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri. Journal of Fish Biology, 79(4):1029-1046.10958649http://hdl.handle.net/11154/14113110.1111/j.1095-8649.2011.03081.xhttp://onlinelibrary.wiley.com/doi/10.1111/j.1095-8649.2011.03081.x/full79(4):1029-1046reponame:Sistema de Información de la Facultad de Ciencias, UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMENJournal of Fish Biologyinfo:eu-repo/semantics/openAccessoai:repositorio.fciencias.unam.mx:11154/1411312025-09-17T19:24:32Z
dc.title.none.fl_str_mv Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri
title Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri
spellingShingle Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri
Zúñiga-Vega, José Jaime
Body shape
geometric morphometrics
life-history traits
Poeciliidae
reproduction
viviparous fishes
title_short Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri
title_full Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri
title_fullStr Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri
title_full_unstemmed Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri
title_sort Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri
dc.creator.none.fl_str_mv Zúñiga-Vega, José Jaime
Suárez-Rodríguez, M
Espinosa-Pérez, H
Johnson, JB
author Zúñiga-Vega, José Jaime
author_facet Zúñiga-Vega, José Jaime
Suárez-Rodríguez, M
Espinosa-Pérez, H
Johnson, JB
author_role author
author2 Suárez-Rodríguez, M
Espinosa-Pérez, H
Johnson, JB
author2_role author
author
author
dc.subject.none.fl_str_mv Body shape
geometric morphometrics
life-history traits
Poeciliidae
reproduction
viviparous fishes
topic Body shape
geometric morphometrics
life-history traits
Poeciliidae
reproduction
viviparous fishes
description In viviparous organisms, pregnant females typically experience an increase in body mass and body volume. In this study, the prediction that variation in reproductive traits among populations of viviparous organisms should be related to variation among populations in body shape was tested in the Pacific molly Poecilia butleri, a viviparous fish that inhabits western Mexico and northern Central America. Variation among 10 populations in four reproductive traits was examined: brood size, individual embryo mass, total reproductive allotment and degree of maternal provisioning of nutrients to developing embryos. Variation among these populations in body shape was also examined. Significant variation among populations was observed in both brood size and reproductive allotment but not in embryo mass or degree of maternal provisioning. Significant variation among populations was also observed in body shape. After correcting for female size, however, reproductive traits and body shape were not associated among populations. This suggests that selective pressures acting on reproduction do not necessarily affect morphology and vice versa. Several factors might contribute to this unexpected lack of association between reproductive traits and morphology.
publishDate 2011
dc.date.none.fl_str_mv 2011
2013-04-05T18:45:37Z
2013-04-05T18:45:37Z
2013-04-05T18:45:37Z
2013-04-05T18:45:37Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Zúñiga-Vega, JJ; Suárez-Rodríguez, M; Espinosa-Pérez, H; Johnson, JB (2011). Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri. Journal of Fish Biology, 79(4):1029-1046.
10958649
http://hdl.handle.net/11154/141131
10.1111/j.1095-8649.2011.03081.x
identifier_str_mv Zúñiga-Vega, JJ; Suárez-Rodríguez, M; Espinosa-Pérez, H; Johnson, JB (2011). Morphological and reproductive variation among populations of the Pacific molly Poecilia butleri. Journal of Fish Biology, 79(4):1029-1046.
10958649
10.1111/j.1095-8649.2011.03081.x
url http://hdl.handle.net/11154/141131
dc.language.none.fl_str_mv EN
language_invalid_str_mv EN
dc.relation.none.fl_str_mv Journal of Fish Biology
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8649.2011.03081.x/full
79(4):1029-1046
reponame:Sistema de Información de la Facultad de Ciencias, UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Sistema de Información de la Facultad de Ciencias, UNAM
collection Sistema de Información de la Facultad de Ciencias, UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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