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Genetic Diversity of Asian Seabass (Lates calcarifer) in Captive Populations

Athirah Mohd Bakri and Yuzine Esa

Pertanika Journal of Science & Technology, Pre-Press

DOI: https://doi.org/10.47836/pjst.31.4.18

Keywords: captive, CO1 mtDNA, genetic distance, L. calcarifer

Published: 2023-05-25

This study examined the genetic diversity of Asian seabass (Lates calcarifer) captive populations using sequencing of the mitochondrial DNA cytochrome c oxidase I (COI) fragment. The phylogenetic analyses of the 609 base pair regions of the COI fragment from 146 samples identified 15 haplotypes and divided them into two clades with a genetic divergence of 10%. Thus, phylogenetic results supported two genetic groups (the Australia/Southeast Asia group and the India/Myanmar group) within the captive populations under study. Mixed levels of genetic diversity were observed among captive populations, which indicated a certain degree of inbreeding depression. The findings would be useful for future aquaculture management of captive Asian seabass in Malaysia.

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ISSN 0128-7702

e-ISSN 2231-8534

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