THE GENETIC DIVERSITY OF DUSKY LABIATE-BARBEL FISH Semilabeo obscurus IN THAI NGUYEN PROVINCE BASED ON MITOCHRONDRIAL COI GENE SEQUENCES

Abstract

Dusky Labiate-barbel fish (Anh Vu) is one of the indigenous species with economic value, distributed in the rivers of the Northern mountainous region, including Thai Nguyen province. In this study, four populations of Anh Vu in Song Cong city, Vo Nhai district, Dai Tu district and Thai Nguyen city were investigated for genetic diversity and phylogenetic based on analysing and sequencing the mitochondrial Cytochrome c oxidase subunit I (COI) gene. The results show that the genetic relationship between populations is relatively proportional to the geographical distance of rivers in Thai Nguyen province. Haplotype diversity and nucleotide diversity in the Vo Nhai and Song Cong city population were higher than those in others. The genetic difference of Anh Vu population between Vo Nhai-Dai Tu and Dai Tu-Song Cong city was. The phylogenetic tree indicated the distant genetic relationship between Dai Tu population and other’s. The results of genetic diversity of Anh Vu in Thai Nguyen are the scientific basis for proposing solutions to conserve and develop genetic resources of this fish.