Chapter

Phylogeography

MICHAEL N DAWSON, ROBIN S. WAPLES and GIACOMO BERNARD

in The Ecology of Marine Fishes

Published by University of California Press

Published in print February 2006 | ISBN: 9780520246539
Published online March 2012 | e-ISBN: 9780520932470 | DOI: http://dx.doi.org/10.1525/california/9780520246539.003.0002
Phylogeography

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Phylogeography seeks to explain the geographic distribution of genetic lineages. To the extent that organisms are products of their DNA, phylogeography also seeks to explain the distribution of organisms, including variation within and, less commonly, between species. This chapter employs the comparative phylogeographic approach to elucidate the factors that have most influenced geographic patterns of genetic variation in California fishes. Phylogeographic hypotheses fall into two categories: those that focus on (intrinsic) properties of the organism and those that focus on (extrinsic) properties of the environment. They map, to an extent, onto the juxtaposed issues of dispersal and vicariance, often focusing on issues regarding life-history, particularly the duration and dispersal potential of larval stages, and the degree of geographic isolation, respectively.

Keywords: phylogeographic approach; genetic variation; California fishes; larval stages; geographic isolation

Chapter.  22053 words.  Illustrated.

Subjects: Aquatic Biology

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