Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?

Intraspecific variation in morphology has often been related to fitness differences through its effects on performance. In lizards, variation in hind limb length can be shaped by natural selection for increased locomotor performance, sexual selection on the number or size of femoral pores involved i...

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Detalles Bibliográficos
Autores: Iraeta, Pablo, Monasterio Martín, Camila, Salvador, Alfredo, Díaz González-Serrano, José Augusto
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/125118
Acceso en línea:https://hdl.handle.net/20.500.14352/125118
Access Level:acceso abierto
Palabra clave:598.112
591.49
591.5
Coloration
Femoral pores
Natural selection
Psammodromus algirus
Sexual selection
Sprint speed
Zoología
Reptiles
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.16 Herpetología
2401.01 Anatomía Animal
2401.06 Ecología Animal
id ES_bc0e854d1b7a671925a8a2f33fb194d6
oai_identifier_str oai:docta.ucm.es:20.500.14352/125118
network_acronym_str ES
network_name_str España
repository_id_str
spelling Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?Iraeta, PabloMonasterio Martín, CamilaSalvador, AlfredoDíaz González-Serrano, José Augusto598.112591.49591.5ColorationFemoral poresNatural selectionPsammodromus algirusSexual selectionSprint speedZoologíaReptilesEcología (Biología)2401 Biología Animal (Zoología)2401.16 Herpetología2401.01 Anatomía Animal2401.06 Ecología AnimalIntraspecific variation in morphology has often been related to fitness differences through its effects on performance. In lizards, variation in hind limb length can be shaped by natural selection for increased locomotor performance, sexual selection on the number or size of femoral pores involved in chemical signalling, or both. Here, we analyze the selective forces involved in sexual dimorphism and differences in hind limb length between two populations of Psammodromus algirus living at different elevation. Males were more robust and had longer hind limbs and limb segments than females, and low-elevation lizards had longer limbs than high-elevation ones. However, differences in locomotor performance were small and non-significant, making natural selection for faster runs an unlikely explanation for the observed pattern. On the other hand, males had more femoral pores than females, and lizards had more pores at lower elevation, although the difference was significant only for males (which invest more in chemical signalling). In males, the number of pores, that remains constant along a lizard’s life, was not correlated with hind limb length. However, femur length was positively correlated with mean pore size, allowing low-elevation males to have larger than expected pores, which could increase the effectiveness with which they spread their signals in a dry and warm habitat where chemicals volatilize rapidly. Also, saturation of the sexual coloration of the head was higher for low elevation males, suggesting that sexual selection pressures may be more intense. Overall, our results indicate that sexual selection plays a significant role in shaping intraspecific variation in hind limb length.Oxford University PressUniversidad Complutense de Madrid20112011-10-1420112011-10-14journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/125118reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengMinisterio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 CGL2007-60277%2FBOS Variación geográfica y diferenciación poblacional de caracteres reproductivos en lagartijas del complejo de especies Psammodromus manuelae - P. jeanneaeopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1251182026-06-02T12:44:21Z
dc.title.none.fl_str_mv Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?
title Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?
spellingShingle Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?
Iraeta, Pablo
598.112
591.49
591.5
Coloration
Femoral pores
Natural selection
Psammodromus algirus
Sexual selection
Sprint speed
Zoología
Reptiles
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.16 Herpetología
2401.01 Anatomía Animal
2401.06 Ecología Animal
title_short Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?
title_full Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?
title_fullStr Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?
title_full_unstemmed Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?
title_sort Sexual dimorphism and interpopulation differences in lizard hind limb length: locomotor performance or chemical signalling?
dc.creator.none.fl_str_mv Iraeta, Pablo
Monasterio Martín, Camila
Salvador, Alfredo
Díaz González-Serrano, José Augusto
author Iraeta, Pablo
author_facet Iraeta, Pablo
Monasterio Martín, Camila
Salvador, Alfredo
Díaz González-Serrano, José Augusto
author_role author
author2 Monasterio Martín, Camila
Salvador, Alfredo
Díaz González-Serrano, José Augusto
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 598.112
591.49
591.5
Coloration
Femoral pores
Natural selection
Psammodromus algirus
Sexual selection
Sprint speed
Zoología
Reptiles
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.16 Herpetología
2401.01 Anatomía Animal
2401.06 Ecología Animal
topic 598.112
591.49
591.5
Coloration
Femoral pores
Natural selection
Psammodromus algirus
Sexual selection
Sprint speed
Zoología
Reptiles
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.16 Herpetología
2401.01 Anatomía Animal
2401.06 Ecología Animal
description Intraspecific variation in morphology has often been related to fitness differences through its effects on performance. In lizards, variation in hind limb length can be shaped by natural selection for increased locomotor performance, sexual selection on the number or size of femoral pores involved in chemical signalling, or both. Here, we analyze the selective forces involved in sexual dimorphism and differences in hind limb length between two populations of Psammodromus algirus living at different elevation. Males were more robust and had longer hind limbs and limb segments than females, and low-elevation lizards had longer limbs than high-elevation ones. However, differences in locomotor performance were small and non-significant, making natural selection for faster runs an unlikely explanation for the observed pattern. On the other hand, males had more femoral pores than females, and lizards had more pores at lower elevation, although the difference was significant only for males (which invest more in chemical signalling). In males, the number of pores, that remains constant along a lizard’s life, was not correlated with hind limb length. However, femur length was positively correlated with mean pore size, allowing low-elevation males to have larger than expected pores, which could increase the effectiveness with which they spread their signals in a dry and warm habitat where chemicals volatilize rapidly. Also, saturation of the sexual coloration of the head was higher for low elevation males, suggesting that sexual selection pressures may be more intense. Overall, our results indicate that sexual selection plays a significant role in shaping intraspecific variation in hind limb length.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-10-14
2011
2011-10-14
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/125118
url https://hdl.handle.net/20.500.14352/125118
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 CGL2007-60277%2FBOS Variación geográfica y diferenciación poblacional de caracteres reproductivos en lagartijas del complejo de especies Psammodromus manuelae - P. jeanneae
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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