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Genetic Diversity Evaluated through Mt-DNA COI Gene among Population of the Thenus unimaculatus in the Indo West Pacific Region
Thalassas: An International Journal of Marine Sciences ( IF 0.7 ) Pub Date : 2021-01-11 , DOI: 10.1007/s41208-020-00279-9
Noor Us Saher , Farah Naz , Syeda Hadiqa Noor , Mustafa Kamal

The Thenus species are the most inexpensively significant catch component of demersal trawl shrimp fisheries in the Indo West Pacific region. Previously inadequate specimens of T. unimaculatus identified from India, Thailand, United Arab Emirates, Spain and Mozambique. In the present study genetic diversity of T. unimaculatus based on mt-DNA COI gene sequences in the Indo-West Pacific region evaluated through nucleotide diversity, haplotype and networking analysis of haplotype, mismatch and AMOVA analysis). For the molecular analysis sequences procured from Pakistan and also obtained from Genbank, out of 50 sequences 24 different haplotypes have identified. The haplotype two (n13, 26%) expressed as an ancestral haplotype shared with India, Pakistan and Dubai population. In the current study, the neutrality test Tajima’s D and Fu’s Fs statistics were negative whereas the mismatch distribution analysis expected under the recent expansion model. The value for SSD and Raggedness index were non-significant that indicates that the T. unimaculatus population at range expansion in the Indo Pacific region. Analysis of molecular variance (AMOVA) and FST statistics, contingency analysis of spatial distribution of haplotype frequencies revealed that significant genetic variation among the inhabitant and the gene flow present in the population of T. unimaculatus in the Indo Pacific region.



中文翻译:

通过Mt-DNA COI基因评估印度西太平洋地区独角兽种群的遗传多样性

在印度西太平洋地区,Thenus种类是深海拖网虾渔业中最便宜的重要捕捞成分。以前从印度,泰国,阿拉伯联合酋长国,西班牙和莫桑比克鉴定出的单角锥虫标本不足。在目前的研究中,T。unimaculatus的遗传多样性(根据核苷酸多样性,单倍型和单倍型网络分析,错配和AMOVA分析评估的mt-DNA COI基因序列)。对于从巴基斯坦采购并从Genbank获得的分子分析序列,从50个序列中鉴定出24种不同的单倍型。单倍型二(n13,26%)表示与印度,巴基斯坦和迪拜人口共享的祖先单倍型。在当前的研究中,中立性测试田岛的D和Fu的Fs统计数据为负,而在最近的扩展模型下预期的不匹配分布分析。用于SSD和毛糙索引值是非显著指示该T. unimaculatus印度太平洋地区范围扩大的人口。分子方差分析(AMOVA)和FST统计数据,单倍型频率的空间分布的偶发性分析表明,印度洋太平洋地区独角天牛种群中的居民和基因流之间存在显着的遗传变异。

更新日期:2021-01-11
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