Biogeography A marine Wallace's line?

As most coral reef organisms with a pelagic larval phase are presumed to be readily dispersed between distant populations, sea-surface current patterns should be crucial for predicting ecological and genetic connections among threatened reef populations. Here we investigate this idea by examining va...

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Bibliographic Details
Published in:Nature (London) 2000-08, Vol.406 (6797), p.692-693
Main Authors: Barber, Paul H, Palumbi, Stephen R, Erdmann, Mark V, Moosa, M. Kasim
Format: Article
Language:English
Subjects:
Animals
Biogeography
Connectivity
Coral reefs
Decapoda
Decapoda (Crustacea) - genetics
Ecology
Electron Transport Complex IV - genetics
Genetics, Population
Haplotypes
Haptosquilla pulchella
Indian Ocean
Indonesia
Marine
Mitochondrial DNA
Ocean basins
Ocean currents
Oceanography
Pleistocene
Population Dynamics
Protected areas
Shellfish
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Summary:As most coral reef organisms with a pelagic larval phase are presumed to be readily dispersed between distant populations, sea-surface current patterns should be crucial for predicting ecological and genetic connections among threatened reef populations. Here we investigate this idea by examining variations in the genetic structuring of populations of the mantis shrimp Haptosquilla pulchella taken from 11 reef systems in Indonesia, in which a series of 36 protected areas are presumed to be connected by strong ocean currents. Our results reveal instead that there is a strong regional genetic differentiation that mirrors the separation of ocean basins during the Pleistocene low-sea-level stands, indicating that ecological connections are rare across distances as short as 300-400 km and that biogeographic history also influences contemporary connectivity between reef ecosystems.
ISSN:0028-0836
1476-4687
DOI:10.1038/35021135