Microgeographic evolution of snail shell shape and predator behavior

Menno Schilthuizen, and Liew, Thor Seng and Angelique Van Til, and Merijn Salverda, and Berjaya bin Elahan, and Jaap J. Vermeulen, and S. Sheena James, (2006) Microgeographic evolution of snail shell shape and predator behavior. Evolution, 60 (9). pp. 1851-1858. ISSN 1558-5646


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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 Opisthostomaland 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.

Item Type: Article
Uncontrolled Keywords: Adaptation, conchology, Gastropoda, Malaysia, Mollusca, Opisthostoma
Subjects: Q Science > QL Zoology
Divisions: SCHOOL > Institute for Tropical Biology and Conservation
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 04 Feb 2016 06:26
Last Modified: 16 Oct 2017 07:30
URI: http://eprints.ums.edu.my/id/eprint/12870

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