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Range-wide phylogeography of the little penguin (Eudyptula minor): evidence of long-distance dispersal

Citation

Peuker, AJ and Dann, P and Burridge, CP, Range-wide phylogeography of the little penguin (Eudyptula minor): evidence of long-distance dispersal, Auk: A Journal of Ornithology, 126, (2) pp. 397-408. ISSN 0004-8038 (2009) [Refereed Article]

DOI: doi:10.1525/auk.2009.08055

Abstract

The Little Penguin (Eudyptula minor), a colonial-nesting seabird that is widespread in New Zealand and southern Australia, has high dispersal potential but exhibits regional variation in morphology, coloration, and breeding phenology. We present a distribution-wide survey of mitochondrial DNA variation in the Little Penguin to document phylogeographic relationships and genetic structuring and to test for concordance with intraspecific taxonomy. Phylogeographic structuring was absent among Australian colonies (27 localities, 94 individuals), but the distribution of haplotypes among colonies was significantly nonrandom (φST = 0.110, P < 0.01). The Australian individuals exhibited close phylogenetic relationships with a subset of New Zealand birds (4 localities, 22 individuals), whereas the remaining New Zealand birds (20 localities, 106 individuals) were phylogenetically distinct, with ≥7% sequence divergence, and exhibited greater levels of genetic variation and geographic structuring (φST = 0.774, P < 0.05). These patterns are consistent with earlier suggestions of an origin in New Zealand followed by recent colonization of Australia and back-dispersal to New Zealand. Extinction and re-establishment processes may have been important factors in the development of genetic structuring across a range of spatiotemporal scales. The genetic data are consistent with suggestions that a single subspecies exists in Australia, but not with the subspecies distributions within New Zealand that have been suggested on the basis of morphology and coloration. © 2009 by The American Ornithologists' Union. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Genetics
Research Field:Population, Ecological and Evolutionary Genetics
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Marine Flora, Fauna and Biodiversity
Author:Burridge, CP (Dr Christopher Burridge)
ID Code:58588
Year Published:2009
Web of Science® Times Cited:21
Deposited By:Zoology
Deposited On:2009-10-14
Last Modified:2010-05-18
Downloads:0

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