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Population genetics of the spotted seahorse (Hippocampus kuda) in Thai waters : implications for conservation

Panithanarak, Thadsin, Karuwancharoen, Ratima, Na-Nakorn, Uthairat and Nguyen, Thuy T. T. 2010, Population genetics of the spotted seahorse (Hippocampus kuda) in Thai waters : implications for conservation, Zoological studies, vol. 49, no. 4, pp. 564-576.

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Title Population genetics of the spotted seahorse (Hippocampus kuda) in Thai waters : implications for conservation
Formatted title Population genetics of the spotted seahorse (Hippocampus kuda) in Thai waters : implications for conservation
Author(s) Panithanarak, Thadsin
Karuwancharoen, Ratima
Na-Nakorn, Uthairat
Nguyen, Thuy T. T.
Journal name Zoological studies
Volume number 49
Issue number 4
Start page 564
End page 576
Publisher Academia Sinica Research Center for Biodiversity
Place of publication Taipei, Taiwan
Publication date 2010-07
ISSN 1021-5506
Keyword(s) hippocampus kuda
mitochondrial DNA (mtDNA) control region
spotted seahorses
population genetics
thailand
Summary A population genetics approach was used to investigate the genetic diversity of the spotted seahorse (Hippocampus kuda) in Thai waters; specifically, the degree of genetic differentiation and species evolution was inferred from sequence analysis of 353 bp of the mitochondrial (mt)DNA control region. The data were then used to identify discrete populations in Thai waters for effective conservation and management. Spotted seahorses were collected from 4 regions on the east and west coasts of the Gulf of Thailand and a geographically separated region in the Andaman Sea. Of the 101 mtDNA sequences analyzed, 7 haplotypes were identified, 5 of which were shared among individuals from the east and west coasts of the Gulf of Thailand. The remaining haplotypes were restricted to individuals from the Andaman Sea. Nucleotide and haplotype diversities were similar within the Gulf of Thailand samples, whereas diversity was lower in the Andaman Sea sample. Genetic differentiation appeared between pairs of samples from the Gulf of Thailand and Andaman Sea (FST, p < 0.0001). A large genetic variance appeared among the 2 population groups (94.46%, ΦCT = 0.94464, p < 0.01). A Neighbor-joining tree indicated that individuals from the Gulf of Thailand and Andaman Sea formed 2 phylogenetically distinct groups, which were segregated into different population-based clades. While results reported here indicate that populations from the Gulf of Thailand and Andaman Sea should be treated as separate conservation units, a larger sample size from the Andaman Sea is required to confirm this genetic partitioning and low level of diversity observed in the present study.
Language eng
Field of Research 070405 Fish Physiology and Genetics
Socio Economic Objective 970105 Expanding Knowledge in the Environmental Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, Academia Sinica Research Center for Biodiversity
Persistent URL http://hdl.handle.net/10536/DRO/DU:30036037

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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Created: Thu, 28 Jul 2011, 10:59:54 EST by Linda Aldridge

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