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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (12): 54-60.doi: 10.11924/j.issn.1000-6850.casb2022-0313

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Bellamya aeruginosa in Six Lakes Along the East Line of the South-to-North Water Diversion Project: Analysis of Genetic Diversity and Genetic Structure

ZHAO Yan1(), ZHANG Chong1, CUI Mengyao1, LI Xian2, LU Guangjin1, JI Xiangshan1, CHEN Hongju1()   

  1. 1 College of Animal Science and Technology, Shandong Agricultural University, Tai’an, Shandong 271018
    2 Shandong Freshwater Fisheries Research Institute, Jinan 250117
  • Received:2022-04-28 Revised:2022-08-27 Online:2023-04-25 Published:2023-04-21

Abstract:

In order to evaluate the impact of the South-to-North Water Diversion Project on water environment and ecology of lakes along the water conveyance route, using wild Bellamya aeruginosa in different lakes and water area (Dongping Lake, Nansi Lake, Luoma Lake, Hongze Lake, Gaoyou Lake etc.) along the east line of the project as the materials, and that in Dianchi Lake as the control, the genetic diversity and phylogenetic relationship of various populations were analyzed based on COI and 16S rRNA genes. The results showed that the haplotype diversity (0.924, 0.958), nucleotide diversity (0.04466, 0.03068) and average nucleotide diversity (27.333, 14.117) of Dianchi Lake population were much higher than those of the six populations along the east line of the South-to-North Water Diversion Project. Tajima’s neutral test results did not deviate from the neutral significantly (P>0.10), and the nucleotide pairing difference distribution map did not show an obvious single peak. The genetic distance between Dianchi Lake population and the six populations along the east line was much greater than that among the six populations. The cluster analysis showed that most individuals of the six populations along the east line of the South-to-North Water Diversion Project were mixed together, while most individuals of the Dianchi Lake population were concentrated together, mixing with other populations occasionally. The study indicates that the water diversion project has an impact on the genetic diversity and genetic structure of Bellamya aeruginosa in waters along the project route.

Key words: South-to-North Water Diversion Project, Bellamya aeruginosa, COI, 16S rRNA, genetic diversity, genetic structure