Schilthuizen, Menno and A., S. Cabanban and M., Haase (2005) Possible speciation with gene flow in tropical cave snails. Journal of Zoological Systematics Evolutionary Resrarch, 43 (2). pp. 133-138. ISSN 0947-5745
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Abstract
In this paper, we present a newly-discovered troglobitic species of the snail genus Georissa from a limestone cave in Borneo. Molecular phylogenetic analysis of 16S mitochondrial DNA sequences shows that its ancestor is the local epigean population of Georissa saulae, living in the rainforest directly at the cave entrances. A multivariate analysis of shell characters reveals that the troglobite has diverged morphologically, but is connected to its epigean ancestor by a population of intermediate morphology in the twilight zone of the cave. The molecular data further indicate ongoing gene flow between the epigean population and the troglobite, via the intermediate population. We suggest that the troglobite may have diverged from its ancestor without prior isolation.
| Item Type: | Article |
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| Keyword: | Gastropoda, Parapatric speciation, Caves, Troglobites, Mitochondrial DNA, Conchometry, Borneo, Sabah, 16S, Principal component analysis |
| Subjects: | Q Science > QL Zoology > QL1-991 Zoology > QL360-599.82 Invertebrates |
| Department: | INSTITUTE > Institute for Tropical Biology and Conservation |
| Depositing User: | ADMIN ADMIN |
| Date Deposited: | 14 Oct 2011 14:01 |
| Last Modified: | 16 Oct 2017 16:16 |
| URI: | https://eprints.ums.edu.my/id/eprint/980 |
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