Sexual conflict predicts morphology and behavior in two species of penduline tits

 

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dc.contributor.author van Dijk, Rene en_ZA
dc.contributor.author Pogany, Akos en_ZA
dc.contributor.author Komdeur, Jan en_ZA
dc.contributor.author Lloyd, Penn en_ZA
dc.contributor.author Szekely, Tamas en_ZA
dc.date.accessioned 2015-10-28T07:02:54Z
dc.date.available 2015-10-28T07:02:54Z
dc.date.issued 2010 en_ZA
dc.identifier.citation Van Dijk, R. E., Pogány, Á., Komdeur, J., Lloyd, P., & Székely, T. (2010). Sexual conflict predicts morphology and behavior in two species of penduline tits. BMC evolutionary biology, 10(1), 107. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/14460
dc.identifier.uri http://dx.doi.org/10.1186/1471-2148-10-107
dc.description.abstract BACKGROUND:The evolutionary interests of males and females rarely coincide (sexual conflict), and these conflicting interests influence morphology, behavior and speciation in various organisms. We examined consequences of variation in sexual conflict in two closely-related passerine birds with contrasting breeding systems: the Eurasian penduline tit Remiz pendulinus (EPT) exhibiting a highly polygamous breeding system with sexually antagonistic interests over parental care, and the socially monogamous Cape penduline tit Anthoscopus minutus (CPT). We derived four a priori predictions from sexual conflict theory and tested these using data collected in Central Europe (EPT) and South Africa (CPT). Firstly, we predicted that EPTs exhibit more sexually dimorphic plumage than CPTs due to more intense sexual selection. Secondly, we expected brighter EPT males to provide less care than duller males. Thirdly, since song is a sexually selected trait in many birds, male EPTs were expected to exhibit more complex songs than CPT males. Finally, intense sexual conflict in EPT was expected to lead to low nest attendance as an indication of sexually antagonistic interests, whereas we expected more cooperation between parents in CPT consistent with their socially monogamous breeding system. RESULTS: Consistent with our predictions EPTs exhibited greater sexual dimorphism in plumage and more complex song than CPTs, and brighter EPT males provided less care than duller ones. EPT parents attended the nest less frequently and less simultaneously than CPT parents. CONCLUSIONS: These results are consistent with sexual conflict theory: species in which sexual conflict is more manifested (EPT) exhibited a stronger sexual dimorphism and more elaborated sexually selected traits than species with less intense sexual conflict (CPT). Our results are also consistent with the notion that EPTs attempt to force their partner to work harder as expected under sexual conflict: each member of the breeding pair attempts to shift the costs of care to the other parent. More brightly colored males benefit more from desertion than dull ones, because they are more likely to remate with a new female. Taken together, the comparison between two closely related species with contrasting breeding systems suggest that sexual conflict over care has influenced the evolution of behavior and morphology in penduline tits. en_ZA
dc.language.iso eng en_ZA
dc.publisher BioMed Central Ltd en_ZA
dc.rights This is an Open Access article distributed under the terms of the Creative Commons Attribution License en_ZA
dc.rights.uri http://creativecommons.org/licenses/by/2.0 en_ZA
dc.source BMC Evolutionary Biology en_ZA
dc.source.uri http://www.biomedcentral.com/bmcevolbiol/ en_ZA
dc.subject.other Ornithology en_ZA
dc.subject.other Passeriformes en_ZA
dc.subject.other Sex Characteristics en_ZA
dc.subject.other Sexual Behavior, Animal en_ZA
dc.title Sexual conflict predicts morphology and behavior in two species of penduline tits en_ZA
dc.type Journal Article en_ZA
dc.rights.holder 2010 van Dijk et al; licensee BioMed Central Ltd. en_ZA
uct.type.publication Research en_ZA
uct.type.resource Article en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Percy FitzPatrick Institute of African Ornithology en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation van Dijk, R., Pogany, A., Komdeur, J., Lloyd, P., & Szekely, T. (2010). Sexual conflict predicts morphology and behavior in two species of penduline tits. <i>BMC Evolutionary Biology</i>, http://hdl.handle.net/11427/14460 en_ZA
dc.identifier.chicagocitation van Dijk, Rene, Akos Pogany, Jan Komdeur, Penn Lloyd, and Tamas Szekely "Sexual conflict predicts morphology and behavior in two species of penduline tits." <i>BMC Evolutionary Biology</i> (2010) http://hdl.handle.net/11427/14460 en_ZA
dc.identifier.vancouvercitation van Dijk R, Pogany A, Komdeur J, Lloyd P, Szekely T. Sexual conflict predicts morphology and behavior in two species of penduline tits. BMC Evolutionary Biology. 2010; http://hdl.handle.net/11427/14460. en_ZA
dc.identifier.ris TY - Journal Article AU - van Dijk, Rene AU - Pogany, Akos AU - Komdeur, Jan AU - Lloyd, Penn AU - Szekely, Tamas AB - BACKGROUND:The evolutionary interests of males and females rarely coincide (sexual conflict), and these conflicting interests influence morphology, behavior and speciation in various organisms. We examined consequences of variation in sexual conflict in two closely-related passerine birds with contrasting breeding systems: the Eurasian penduline tit Remiz pendulinus (EPT) exhibiting a highly polygamous breeding system with sexually antagonistic interests over parental care, and the socially monogamous Cape penduline tit Anthoscopus minutus (CPT). We derived four a priori predictions from sexual conflict theory and tested these using data collected in Central Europe (EPT) and South Africa (CPT). Firstly, we predicted that EPTs exhibit more sexually dimorphic plumage than CPTs due to more intense sexual selection. Secondly, we expected brighter EPT males to provide less care than duller males. Thirdly, since song is a sexually selected trait in many birds, male EPTs were expected to exhibit more complex songs than CPT males. Finally, intense sexual conflict in EPT was expected to lead to low nest attendance as an indication of sexually antagonistic interests, whereas we expected more cooperation between parents in CPT consistent with their socially monogamous breeding system. RESULTS: Consistent with our predictions EPTs exhibited greater sexual dimorphism in plumage and more complex song than CPTs, and brighter EPT males provided less care than duller ones. EPT parents attended the nest less frequently and less simultaneously than CPT parents. CONCLUSIONS: These results are consistent with sexual conflict theory: species in which sexual conflict is more manifested (EPT) exhibited a stronger sexual dimorphism and more elaborated sexually selected traits than species with less intense sexual conflict (CPT). Our results are also consistent with the notion that EPTs attempt to force their partner to work harder as expected under sexual conflict: each member of the breeding pair attempts to shift the costs of care to the other parent. More brightly colored males benefit more from desertion than dull ones, because they are more likely to remate with a new female. Taken together, the comparison between two closely related species with contrasting breeding systems suggest that sexual conflict over care has influenced the evolution of behavior and morphology in penduline tits. DA - 2010 DB - OpenUCT DO - 10.1186/1471-2148-10-107 DP - University of Cape Town J1 - BMC Evolutionary Biology LK - https://open.uct.ac.za PB - University of Cape Town PY - 2010 T1 - Sexual conflict predicts morphology and behavior in two species of penduline tits TI - Sexual conflict predicts morphology and behavior in two species of penduline tits UR - http://hdl.handle.net/11427/14460 ER - en_ZA


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