汩罗江与柳江鳤鱼线粒体细胞色素b基因的遗传变异初探

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Abstract

Partial mitochondrial DNA Cytochrome b gene in Ochetobius elogatus from Miluojiang River and Liujiang River was sequenced and analyzed in present study.Six haplotypes were determined, of which 19 variable sites and 15 parsimony-informatic sites were found.AT content and GC content were 57.6% and 42.4%, respectively.On the neighbor-joining tree based on Kimura-2 parameter model, individuals from Miluojiang River and Liujiang River were clustered separately. Genetic variation among 4 individuals from Miluojiang population was 0.001-0.007, and that between 2 individual of Liujiang population was 0.001.Genetic variation between 2 populations ranged from 0.013 to 0.017 with an average of 0.015.The results indicated that genetic variation was much greater between populations than within populations, and genetic differentiation was obvious between Miluojiang population and Liujiang population.However, the conclusion about genetic variation in the two rivers should be further validated by collecting more samples from more locations.

Key words： Ochetobius elongates Cytochrome b Genetic variation

Received: 25 October 2009

Q178.532

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	FAN Feng-juan
	ZHANG Qun

Cite this article:

FAN Feng-juan,ZHANG Qun. Preliminary study on genetic variation of mitochondrial DNA cytochrome b gene of Ochetobius elogatus in Miluojiang River and Liujiang River[J]. , 2009, 28(5): 457-459.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2009/V28/I5/457