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Mol Ecol. 2005 Nov;14(13):3921-8.

Recent invasion of the tropical Atlantic by an Indo-Pacific coral reef fish.

Author information

1
Smithsonian Tropical Research Institute, Unit 0948, APO, AA 34002-0948, USA. rochal@naos.si.edu

Abstract

The last tropical connection between Atlantic and Indian-Pacific habitats closed c. 2 million years ago (Ma), with the onset of cold-water upwelling off southwestern Africa. Yet comparative morphology indicates more recent connections in several taxa, including reef-associated gobies (genus Gnatholepis). Coalescence and phylogenetic analyses of mtDNA cytochrome b sequences demonstrate that Gnatholepis invaded the Atlantic during an interglacial period approximately 145,000 years ago (d = 0.0054), colonizing from the Indian Ocean to the western Atlantic, and subsequently to the central ( approximately 100,000 years ago) and eastern Atlantic ( approximately 30,000 years ago). Census data show a contemporary range expansion in the northeastern Atlantic linked to global warming.

[Indexed for MEDLINE]

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