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Mol Phylogenet Evol. 1998 Jun;9(3):567-71.

Biogeography of Sulawesian shrews: testing for their origin with a parametric bootstrap on molecular data.

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  • 1Institut de Zoologie et d'Ecologie Animale, University of Lausanne, Lausanne, CH-1015, Switzerland.

Erratum in

  • Mol Phylogenet Evol 1998 Oct;10(2):269.

Abstract

In order to identify the zoogeographic origin of shrews (genus Crocidura) living on the oceanic island of Sulawesi, 15 taxa from Southeast Asia and 1 from Europe were examined for sequence variation in a segment (617 bp) of the mitochondrial cytochrome b gene. The null hypothesis of a monophyletic origin of all Sulawesian shrews was investigated by a phylogenetic reconstruction using maximum parsimony. According to a parametric bootstrap which simulated sequence evolution for these taxa, the null hypothesis could be rejected as highly unlikely (P < 0.01). Therefore, the molecular phylogeny strongly suggests that overwater colonization of Sulawesi by shrews succeeded on at least two occasions. The first, relatively ancient wave of colonizers radiated and gave rise to a surprizingly diverse assemblage of at least five species which now coexist in perfect sympatry on Sulawesi. The second wave, of more recent origin, gave rise to Crocidura nigripes, a species which retained close genetic affinities with other Malay shrews.

Copyright 1998 Academic Press.

[PubMed - indexed for MEDLINE]
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