Microgeographic evolution of snail shell shape and predator behavior

Schilthuizen, Menno and Van Til, Angelique and Salverda, Merijn H. and Liew, Thor Seng and James, S. Sheena and Berjaya Elahan, and Vermeulen, Jaap Jan (2006) Microgeographic evolution of snail shell shape and predator behavior. Evolution, 60 (9). pp. 1851-1858. ISSN 0014-3820


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Genetic divergence in geographically isolated populations is a prerequisite for allopatric speciation, one of the most common modes of speciation. In ecologically equivalent populations existing within a small, environmentally homogeneous area, an important role for environmentally neutral divergence is often found or inferred. We studied a species complex of conspicuously shaped Opisthostoma land snails on scattered limestone outcrops within a small area of lowland rainforest in Borneo. We used shell morphometrics, mitochondrial and nuclear DNA sequences, and marks of predation to study the factors involved in allopatric divergence. We found that a striking geographic divergence exists in shell morphology, which is partly associated with neutral genetic divergence. We also found geographic differentiation in the behavior of the snails' invertebrate predator and evidence of an evolutionary interaction between aspects of shell shape and predator behavior. Our study shows that adaptation to biotic aspects of the environment may play a more important role in allopatric speciation than previously suspected, even on a geographically very small scale. © 2006 The Society for the Study of Evolution.

Item Type: Article
Uncontrolled Keywords: Adaptation, Conchology, Gastropoda, Malaysia, Mollusca, Opisthostoma
Subjects: ?? QL360-599.82 ??
Divisions: SCHOOL > Institute for Tropical Biology and Conservation
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 02 Mar 2012 06:59
Last Modified: 17 Oct 2017 03:06
URI: http://eprints.ums.edu.my/id/eprint/3655

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