Mosaics in the mangroves: allopatric diversification of tree-climbing mudwhelks (Gastropoda: Potamididae: Cerithidea) in the Indo-West Pacific
Reid, D.G.; Claremont, M.; Smith, L.M.; Shamoto, M.; Glaubrecht, M.; Ozawa, T. (2013). Mosaics in the mangroves: allopatric diversification of tree-climbing mudwhelks (Gastropoda: Potamididae: Cerithidea) in the Indo-West Pacific. Biol. J. Linn. Soc. 110(3): 564–580. http://dx.doi.org/10.1111/bij.12151
In: Biological Journal of the Linnean Society. Academic Press: London; New York. ISSN 0024-4066; e-ISSN 1095-8312, more
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| Keywords |
Dispersal
Indo-Australian Plate
ISEW, Indonesia, Makassar Strait
Speciation
Marine/Coastal |
| Author keywords |
Biodiversity hotspot; COI gene; Indo-Australian Archipelago |
| Authors | | Top |
- Reid, D.G.
- Claremont, M.
- Smith, L.M.
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- Shamoto, M.
- Glaubrecht, M.
- Ozawa, T.
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| Abstract |
The Indo-Australian Archipelago (IAA) is the richest area of biodiversity in the marine realm, yet the processes that generate and maintain this diversity are poorly understood and have hardly been studied in the mangrove biotope. Cerithidea is a genus of marine and brackish-water snails restricted to mangrove habitats in the Indo-West Pacific, and its species are believed to have a short pelagic larval life. Using molecular and morphological techniques, we demonstrate the existence of 15 species, reconstruct their phylogeny and plot their geographical ranges. Sister species show a pattern of narrowly allopatric ranges across the IAA, with overlap only between clades that show evidence of ecological differentiation. These allopatric mosaic distributions suggest that speciation may have been driven by isolation during low sea-level stands, during episodes preceding the Plio-Pleistocene glaciations. The Makassar Strait forms a biogeographical barrier hindering eastward dispersal, corresponding to part of Wallace's Line in the terrestrial realm. Areas of maximum diversity of mangrove plants and their associated molluscs do not coincide closely. |
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