Mohindra Vindhya, Singh Rajeev K, Kumar Rajesh, Sah R S, Lal Kuldeep K
National Bureau of Fish Genetic Resources (ICAR) , Lucknow, Uttar Pradesh , India.
Mitochondrial DNA. 2015 Apr;26(2):182-6. doi: 10.3109/19401736.2013.861455. Epub 2014 Jan 10.
Pangasius pangasius, an endangered freshwater fish species, is an important component of capture fishery from Indian rivers. Samples collected through commercial catches from three riverine populations were analyzed with cytb (307 bp) and ATPase6&8 (842 bp) regions for population variation and differentiation. The sequences of the both the mitochondrial regions revealed high haplotype and low nucleotide diversity. Shallow genetic diversity based on ATPase6&8 was observed, however its haplotypes network clearly indicated two distinct mitochondrial lineages. Mismatch distribution suggested population bottlenecks followed by expansion in Mahanadi population. The present study indicated the ATPase6&8 to be a potential mitochondrial marker for studying the population sub-structuring in the wild population of P. pangasius.
苏氏圆腹芒是一种濒危淡水鱼类，是印度河流域捕捞渔业的重要组成部分。通过商业捕捞从三个河流种群收集的样本，利用细胞色素b（307bp）和ATPase6&8（842bp）区域分析种群变异和分化。两个线粒体区域的序列均显示出高单倍型和低核苷酸多样性。基于ATPase6&8观察到浅度遗传多样性，但其单倍型网络清楚地表明存在两个不同的线粒体谱系。失配分布表明马哈纳迪种群在经历种群瓶颈后出现了扩张。本研究表明，ATPase6&8是研究苏氏圆腹芒野生种群中种群亚结构的潜在线粒体标记。
