Mitochondrial genetic variation and population structure ofthe striped snakehead, Channa striata in Malaysia and Sumatra, Indonesia

M.P. Tan; A.F.J. Jamsari; Z.A. Muchlisin; M.N. Siti Azizah

doi:10.1016/j.bse.2015.04.006

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Mitochondrial genetic variation and population structure ofthe striped snakehead, Channa striata in Malaysia and Sumatra, Indonesia

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M.P. Tan, A.F.J. Jamsari, Z.A. Muchlisin, M.N. Siti Azizah

2015 Biochemical Systematics and Ecology Vol. 60 Article Cited by 17 SDG 17SDG 15SDG 14

Abstract

We explored the genetic diversity and structure of the striped snakehead (Channa striata) across Malaysia and Sumatra (Indonesia) using the partial mtDNA CO1 gene. Twenty five populations (n=345) were assayed and subdivided into six regions, following the physiogeographical barriers. Populations Sega (SG), Tanjung Tambutan (TR), Kajang (KJ) and Linggi (LG) are highly diversified (Hd: 0.484-0.762, π: 0.0033-0.0059) which could serve as candidates for a selective breeding programme. The only population that contributed to the total allelic richness is Takengon (CS) as it is highly differentiated from other populations and genetically variable within population. We detected two major phylogenies: 1) northwest Peninsular Malaysia and 2) all other regions of Malaysia and Sumatra, Indonesia. They are products of the physical restriction to gene flow between the two lineages by the Bintang Mountain Range. A total of 92.4% of the population pairwise comparison FST showed significant structuring, yet several geographically distant populations showed a close genetic relationship. The discrepancy is due to ancient population dispersal and human-mediated translocation. These major findings provide an important base study for initiating a selective breeding program. The high population genetic diversity requires independent conservation as they contain most of the total diversity in this area. © 2015 Elsevier Ltd.

Affiliations

School of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, Kuala Terengganu, Terengganu, 21030, Malaysia; Institut Akuakultur Tropika (AKUATROP), Universiti Malaysia Terengganu, Kuala Terengganu, Terengganu, 21030, Malaysia; Department of Aquaculture, Faculty Marine and Fisheries, Syiah Kuala University, Banda Aceh, 23111, Indonesia; School of Biological Sciences, Universiti Sains Malaysia, Minden, Penang, 11800, Malaysia

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