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Antitropicality of Pacific fishes : molecular insights

Burridge, Christopher P. 2002, Antitropicality of Pacific fishes : molecular insights, Environmental biology of fishes, vol. 65, no. 2, pp. 151-164, doi: 10.1023/A:1020040515980.

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Title Antitropicality of Pacific fishes : molecular insights
Author(s) Burridge, Christopher P.
Journal name Environmental biology of fishes
Volume number 65
Issue number 2
Start page 151
End page 164
Publisher Kluwer Academic
Place of publication Amsterdam, The Netherlands
Publication date 2002-10
ISSN 0378-1909
1573-5133
Keyword(s) dispersal
vicariance
divergence time
molecular clocks
cryptic speciation
bipolar
Summary Twenty-one molecular genetic studies of thirteen antitropical Pacific fishes are herein reviewed. High dispersal potentials and Plio-Pleistocene transequatorial divergence are suggested for approximately half of the taxa studied, consistent with movement across the tropics during glacial periods. Divergences within two fish groups were mid-Miocene in age, corresponding to a period suggested for vicariant isolation associated with equatorial warming, but high dispersal potentials complicate the interpretation of biogeographic history. Only one study suggested transequatorial divergence older than 20 million years. There is a greater proportion of Pleistocene transequatorial divergences in the East Pacific than the West Pacific, consistent with the suggestion that conditions in the East Pacific are more amenable to the formation of antitropical distributions. Multiple transequatorial divergences have been observed within at least two groups, and instances of cryptic speciation have been identified twice. Areas for future research concern taxa that differ from the majority studied to date with respect to latitudinal distribution, bathymetry, evolutionary age, and dispersal potential. Molecular characters have demonstrated utility for the study of antitropical fishes, but with limitations.
Language eng
DOI 10.1023/A:1020040515980
Field of Research 070405 Fish Physiology and Genetics
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2002, Kluwer Academic Publishers
Persistent URL http://hdl.handle.net/10536/DRO/DU:30001496

Document type: Journal Article
Collection: School of Ecology and Environment
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