Data from: Early evolution of sexual dimorphism and polygyny in Pinnipedia
| Main Authors: | Cullen, Thomas M., Fraser, Danielle, Rybczynski, Natalia, Schröder-Adams, Claudia |
|---|---|
| Format: | info dataset Journal |
| Terbitan: |
, 2014
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5001096 |
| ctrlnum |
5001096 |
|---|---|
| fullrecord |
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<dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><creator>Cullen, Thomas M.</creator><creator>Fraser, Danielle</creator><creator>Rybczynski, Natalia</creator><creator>Schröder-Adams, Claudia</creator><date>2014-01-14</date><description>Sexual selection is one of the earliest areas of interest in evolutionary biology. And yet, the evolutionary history of sexually dimorphic traits remains poorly characterized for most vertebrate lineages. Here, we report on evidence for the early evolution of dimorphism within a model mammal group, the pinnipeds. Pinnipeds show a range of sexual dimorphism and mating systems that span the extremes of modern mammals, from monomorphic taxa with isolated and dispersed mating to extreme size dimorphism with highly ordered polygynous harem systems. In addition, the degree of dimorphism in pinnipeds is closely tied to mating system, with strongly dimorphic taxa always exhibiting a polygynous system, and more monomorphic taxa possessing weakly polygynous systems. We perform a comparative morphological description, and provide evidence of extreme sexual dimorphism (similar to sea lions), in the Miocene-aged basal pinniped taxon Enaliarctos emlongi. Using a geometric morphometric approach and combining both modern and fossil taxa we show a close correlation between mating system and sex-related cranial dimorphism, and also reconstruct the ancestral mating system of extant pinnipeds as highly polygynous. The results suggest that sexual dimorphism and extreme polygyny in pinnipeds arose by 27 Ma, in association with changing climatic conditions.</description><description>Appendix 2 - Data TablesAll measurements, morphometric, and statistical data associated with this project and referred to within the manuscript.Appendix2.docx</description><identifier>https://zenodo.org/record/5001096</identifier><identifier>10.5061/dryad.91d71</identifier><identifier>oai:zenodo.org:5001096</identifier><relation>doi:10.1111/evo.12360</relation><relation>url:https://zenodo.org/communities/dryad</relation><rights>info:eu-repo/semantics/openAccess</rights><rights>https://creativecommons.org/publicdomain/zero/1.0/legalcode</rights><subject>reproductive strategies</subject><subject>Otariidae</subject><subject>Mating Systems</subject><subject>Miocene</subject><subject>Coevolution</subject><subject>Holocene</subject><subject>Pinnipedia</subject><subject>Enaliarctos emlongi</subject><subject>fossils</subject><subject>Phocidae</subject><title>Data from: Early evolution of sexual dimorphism and polygyny in Pinnipedia</title><type>Other:info:eu-repo/semantics/other</type><type>Other:dataset</type><recordID>5001096</recordID></dc>
|
| format |
Other:info:eu-repo/semantics/other Other Other:dataset Journal:Journal Journal |
| author |
Cullen, Thomas M. Fraser, Danielle Rybczynski, Natalia Schröder-Adams, Claudia |
| title |
Data from: Early evolution of sexual dimorphism and polygyny in Pinnipedia |
| publishDate |
2014 |
| topic |
reproductive strategies Otariidae Mating Systems Miocene Coevolution Holocene Pinnipedia Enaliarctos emlongi fossils Phocidae |
| url |
https://zenodo.org/record/5001096 |
| contents |
Sexual selection is one of the earliest areas of interest in evolutionary biology. And yet, the evolutionary history of sexually dimorphic traits remains poorly characterized for most vertebrate lineages. Here, we report on evidence for the early evolution of dimorphism within a model mammal group, the pinnipeds. Pinnipeds show a range of sexual dimorphism and mating systems that span the extremes of modern mammals, from monomorphic taxa with isolated and dispersed mating to extreme size dimorphism with highly ordered polygynous harem systems. In addition, the degree of dimorphism in pinnipeds is closely tied to mating system, with strongly dimorphic taxa always exhibiting a polygynous system, and more monomorphic taxa possessing weakly polygynous systems. We perform a comparative morphological description, and provide evidence of extreme sexual dimorphism (similar to sea lions), in the Miocene-aged basal pinniped taxon Enaliarctos emlongi. Using a geometric morphometric approach and combining both modern and fossil taxa we show a close correlation between mating system and sex-related cranial dimorphism, and also reconstruct the ancestral mating system of extant pinnipeds as highly polygynous. The results suggest that sexual dimorphism and extreme polygyny in pinnipeds arose by 27 Ma, in association with changing climatic conditions. Appendix 2 - Data TablesAll measurements, morphometric, and statistical data associated with this project and referred to within the manuscript.Appendix2.docx |
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IOS16997.5001096 |
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ZAIN Publications |
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7213 |
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Cognizance Journal of Multidisciplinary Studies |
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5267 |
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Cognizance Journal of Multidisciplinary Studies |
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16997 |
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Multidisciplinary |
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Stockholm |
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INTERNASIONAL |
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1 |
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2022-06-06T05:24:30Z |
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