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Population structure in the highly fragmented range of Tor douronensis (Cyprinidae) in Sarawak, Malaysia revealed by microsatellite DNA markers

Nguyen, Thuy T. T. 2008, Population structure in the highly fragmented range of Tor douronensis (Cyprinidae) in Sarawak, Malaysia revealed by microsatellite DNA markers, Freshwater biology, vol. 53, no. 5, pp. 924-934, doi: 10.1111/j.1365-2427.2007.01948.x.

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Title Population structure in the highly fragmented range of Tor douronensis (Cyprinidae) in Sarawak, Malaysia revealed by microsatellite DNA markers
Formatted title Population structure in the highly fragmented range of Tor douronensis (Cyprinidae) in Sarawak, Malaysia revealed by microsatellite DNA markers
Author(s) Nguyen, Thuy T. T.
Journal name Freshwater biology
Volume number 53
Issue number 5
Start page 924
End page 934
Publisher Blackwell Scientific Publications
Place of publication Oxford, England
Publication date 2008
ISSN 0046-5070
1365-2427
Keyword(s) conservation
management
microsatellites
population structure
Tor douronensis
Summary 1. Understanding the structure of threatened populations, particularly those that exist in degraded or fragmented habitats is crucial for their effective management and conservation. Recently developed methods of individual-based analysis of genetic data provide an unprecedented opportunity to understand the relationships amongst fragmented populations.

2. In the present study, population structure of an important cyprinid species (Tor douronensis), which is indigenous to Sarawak, Malaysia, is investigated as part of an ongoing conservation effort to restore threatened wild populations of the species. The population structure inferred using data from seven autosomal microsatellite loci was generally consistent with geography and habitat fragmentation.

3. The results indicate that there are two well-defined clusters of T. douronensis in Sarawak, namely the 'northeastern' and the 'southwestern' clusters. In addition, a further subdivision was observed in each of the clusters distributed between river systems. Low levels of gene flow were also observed and migrants between habitat fragments were identified, possibly resulting from human-mediated translocations.

4. Implications of the findings for management and conservation of T. douronensis are discussed.
Language eng
DOI 10.1111/j.1365-2427.2007.01948.x
Field of Research 070401 Aquaculture
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, Blackwell Publishing Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30021367

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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Created: Mon, 14 Dec 2009, 20:42:01 EST by Thuy Nguyen

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