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首页> 外文期刊>International Journal of Marine Science >Phenotypic Plasticity and Genetic Variation of Two Wild Populations of Green tiger Shrimp ( Penaeus semisulcatus - De Haan, 1844)
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Phenotypic Plasticity and Genetic Variation of Two Wild Populations of Green tiger Shrimp ( Penaeus semisulcatus - De Haan, 1844)

机译：绿虎虾两个野生种群的表型可塑性和遗传变异（Penaeus semisulcatus-De Haan，1844年）

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Utility of wild-caught brood stocks in shrimp farming industry is still practiced in many countries. Therefore, identification of genetic variability of geographically distributed commercially important species provide useful information that could be utilized in aquaculture programs. This study investigated the morphological and genetic variation between two wild populations of P. semisulcatus from Northern and Southern parts in Sri Lanka. Each population was consisted with 70 individuals and forty two measurements were taken according to the truss network system for morphometric study. Discriminant function analysis identified four parameters as significant contributors to discriminate two populations and they were associated with the abdominal region of P. semisulcatus . Altogether 3280 nucleotides were analyzed representing four mitochondrial and two nuclear gene regions (both coding and non-coding). Results indicated low genetic variation between two populations. Mitochondrial control gene region produced seven haplotypes which were common between two populations (nucleotide divergence ranged from 0.8% to 5.2%). Among three haplotypes resulted from Cytochrome Oxidase I gene region (COI), one haplotype was common between two populations (nucleotide divergence ranged from 0.1% to 0.3%). Other two mitochondrial gene regions (16S rRNA & 12S rRNA) and two Nuclear (18S RNA & H3) gene regions produced single shared haplotype for each region. In conclusion, results suggest the phenotypic fixation to environmental conditions indicating phenotypic plasticity in P. semisulcatus populations in northern and southern parts of the island.
机译：许多国家仍在使用野生捕捞种群在对虾养殖业中使用。因此，对地理上具有商业意义的物种的遗传变异性的鉴定提供了可用于水产养殖计划的有用信息。这项研究调查了来自斯里兰卡北部和南部的两个半裸P. semisulcatus野生种群之间的形态和遗传变异。每个人口由70个个体组成，根据桁架网络系统进行形态学研究，进行了42次测量。判别函数分析确定了四个参数作为区分两个种群的重要贡献者，它们与半苏丹疟原虫的腹部有关。共分析了3280个核苷酸，代表四个线粒体和两个核基因区域（编码和非编码区域）。结果表明两个种群之间的遗传变异低。线粒体控制基因区域产生了两个种群之间共有的七种单倍型（核苷酸差异范围为0.8％至5.2％）。在细胞色素氧化酶I基因区域（COI）产生的三种单倍型中，两个群体之间共有一种单倍型（核苷酸差异范围为0.1％至0.3％）。其他两个线粒体基因区域（16S rRNA和12S rRNA）和两个核基因（18S RNA和H3）基因区域为每个区域产生单个共享的单倍型。总之，结果表明该表型对环境条件的固定表明该岛北部和南部部分的半硫化体育种群的表型可塑性。

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