Genetic and phenotypic evidence supports evolutionary divergence of the American flamingo (Phoenicopterus ruber) population in the Galapagos islands

Frias-Soler, Roberto, Tindle, Elizabeth, Espinoza Lopez, Georgina, Blomberg, Simon, Studer-Thiersch, Adelheid, Wink, Michael, & Tindle, Robert William (2014) Genetic and phenotypic evidence supports evolutionary divergence of the American flamingo (Phoenicopterus ruber) population in the Galapagos islands. Waterbirds : the International Journal of Waterbird Biology, 37(4), pp. 349-468.

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Abstract

The Galapagos archipelago is characterized by a high degree of endemism across many taxa, linked to the archpelago's oceanic origin and distance from other colonizing land masses. A population of ~ 500 American Flamingos (Phoenicopterus ruber) resides in Galapagos, which is thought to share an historical origin with the American Flamingo currently found in the Caribbean region. Genetic and phenotypic parameters in American Flamingos from Galapagos and from the Caribbean were investigated. Microsatellite and microchondrial DNA markers data showed that the American Flamingo population in Galapagos differs genetically from that in the Caribbean. American Flamingos in Galapagos form a clade which differs by a single common nucleotide substitution from American Flamingos in the Caribbean. The genetic differentiation is also evident from nuclear DNA in that microsatellite data reveal a number of private alleles for the American Flamingo in Galapagos. Analysis of skeletal measurements showed that American Flamingos in Galapagos are smaller than those in the Caribbean primarily due to shorter tarsus length, and differences in body shape sexual dimorphism. American Flamingo eggs from Galapagos have smaller linear dimensions and volumes than those from the Caribbean. The findings are consistent with reproductive isolation of American Flamingo population in Galapagos.

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ID Code: 74136
Item Type: Journal Article
Refereed: Yes
Additional Information: Presented at the American Association for the Advancement of Science (AAAS; Pacific Division) Symposium: ‘Galapagos Science, Conservation and History’. San Francisco State University (USA), June 15-17, 2015.
Keywords: American Flamingo, Caribbean, Galapagos, genetic and morphological divergence
DOI: 10.1675/063.037.0402
ISSN: 1524-4695
Subjects: Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > EVOLUTIONARY BIOLOGY (060300) > Biological Adaptation (060303)
Divisions: Current > QUT Faculties and Divisions > Division of Administrative Services
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2014 Waterbird Society
Deposited On: 20 Jul 2014 22:28
Last Modified: 27 Jun 2015 17:43

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