Evidence of geographical structuring in the Malaysian Snakehead, Channa striata based on partial segment of the CO1 gene

• Main Authors: Abu Bakar Siti-Balkhis, Amirul Firdaus Jamaluddin Jamsari, Tan Shau Hwai, Zulfigar Yasin, Mohd Nor Siti-Azizah
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Genética 2011-01-01
• Series: Genetics and Molecular Biology
• Subjects: Channa striata; snakehead; mtDNA; CO1; isolation by distance
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000300024

Channa striata, locally known as "haruan", is economically important in fisheries and aquaculture industries in several Asian countries. DNA sequencing, based on a partial segment of the Cytochrome oxidase c subunit 1 (CO1) gene, was used to determine genetic variation in C. striata samples from four different populations on the west coast of Peninsular Malaysia. The highest nucleotide and haplotype diversities were observed in the Linggi population (&#960; = 0.0067, h = 0.835), and the lowest in the Timah Tasoh population (&#960; = 0.0008, h = 0.286). Apart from Kajang-Linggi, which was insignificant, F ST values were significant (p < 0.05) in all pairwise-population comparisons. Consequently, it is inferred that genetic structuring C. striata populations in this region was largely shaped by a common origin, with secondary influences from geographical factors and isolation.