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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2022 Vol.41 No.4

Genetic Diversity of Schizopygopsis malacanthus Based on Partial Sequence of mtDNA D?loop
Author of the article:YANG Chaojie1,2, GAO Qiang1, LIU Dan1, NIE Miaomiao1, WANG Fayan1, LI Kemao3, ZHAO Hong4, ZHANG Cunfang1*, QI Delin1*
Author's Workplace:1.State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
2.College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
3.Qinghai Provincial Fishery Technology Extension Center, Xining 810012, China
4.Qinghai Duomei Ecological Environmental Protection Technology Co., Ltd., Xining 810003, China
Key Words:D?loop;genetic diversity;population genetic structure;
Abstract:Schizopygopsis malacanthus is a fish species endemic to the Qinghai‑Tibet Plateau. In order to analyze the genetic diversity and population genetic structure of S. malacanthus, and to provide a theoretical basis for conservation management of the wild resources. The partial sequence (610 bp) of the mtDNA D‑loop of 72 individuals from 3 wild populations of S. malacanthus (Longbaotan National Nature Reserve, upper Batang River and lower Batang River) in Yushu Tibetan Autonomous Prefecture, Qinghai Province were determined. The results showed that a total of 29 polymorphic sites were found, and 16 haplotypes were defined. The haplotype diversity of the 3 populations ranged from 0.438±0.121 to 0.676±0.076, and the nucleotide diversity ranged from 0.003 4±0.000 5 to 0.008 6±0.001 3. Fst value among the 3 populations were extremely significant. The level of gene flow between the upstream and downstream of Batang River was higher, and the individuals’ exchanges were frequent. AMOVA analysis revealed that 79.49% of genetic variation occurred among populations, and 20.51% occurred within populations. The genetic differentiation between populations was extremely significant. The results of phylogenetic analysis and haplotype evolution network showed that the haplotypes of the 3 populations formed 2 major clusters. The results of the neutral test showed that there was no significant population expansion event recently. This study indicates that the populations of S. malacanthus from the Longbaotan National Nature Reserve and the Batang River should be managed and conserved separately as 2 evolutionary units in the future conservation plans.
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