4.5 Article

Mitochondrial DNA diversity: Insight into population diversity, structure and demographic history ofPenaeus monodonalong the entire coastal region of India

期刊

AQUACULTURE RESEARCH
卷 51, 期 11, 页码 4649-4680

出版社

WILEY
DOI: 10.1111/are.14812

关键词

demographic events; mitochondrial DNA; mitochondrial protein-coding genes; molecular evolution; Penaeus monodon; population diversity

资金

  1. Ministry of Earth Sciences

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The giant black tiger shrimp,Penaeus monodon, is one of the most economically important marine shrimp species, and it has a huge global economic impact. In this study, population diversity ofP. monodonalong the nine distinct coastal regions of India was determined by the molecular data of the mitochondrial control region (D-Loop) and five mitochondrial genes (12SrRNA, 16SrRNA, COX1, Cytb and ND1). The mitochondrial DNA regions were highly AT-rich, and demographic events suggested a recent population expansion. The results revealed a high level of genetic diversity, and we observed an increment of rare mutations and haplotypes within all populations. Chennai and Port Blair population showed the highest number of unique haplotypes. A significant level of population differentiation existed within all populations. A high level of genetic variations was observed within all populations. Neutral point mutations (silent or missense) were observed within all mitochondrial protein-coding genes. The mitochondrial control region (D-Loop), 16S ribosomal RNA and cytochrome b gene should be the potential marker forP. monodon. The 16S ribosomal RNA region would be the best mitochondrial marker for biogeographical phylogenetic studies inP. monodon. This study might have a great significance for the establishment of selective breeding strategies to develop genetically improved broodstock and to maintain wild stock diversity.

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