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Volume 12
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10.3390/d12100404
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Article

Genetic Differentiation of an Endangered Megalobrama terminalis Population in the Heilong River within the Genus Megalobrama

by
Xuesong Hu
1,*,
Bo Ma
1,
Chitao Li
1,
Zhiying Jia
1,
Xiaona Jiang
1,
Yanlong Ge
1,
Jingou Tong
2 and
Lianyu Shi
1,*
1
National and Local United Engineering Laboratory for Freshwater Fish Breeding, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150076, China
2
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
*
Authors to whom correspondence should be addressed.
Diversity 2020, 12(10), 404; https://doi.org/10.3390/d12100404
Submission received: 6 August 2020 / Revised: 5 September 2020 / Accepted: 15 October 2020 / Published: 18 October 2020
(This article belongs to the Special Issue Aquatic Restoration Ecology and Monitoring)
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Abstract

Megalobrama terminalis, which inhabits the Sino-Russian Heilong-Amur River Basin, has decreased critically since the 1960s. It has been listed in the Red Book of Endangered Fish Species by the Russian Federation in 2004. To guide the utilization and conservation programs of M. terminalis in the Heilong River (MTH), 3.1 kb of mitochondrial DNA (mtDNA) concatenated sequences and sequence-related amplified polymorphism (SRAP) markers (15 primer combinations) were applied to explore the genetic divergence and population differentiation of MTH within the genus Megalobrama. Clear genetic divergence between MTH and six other populations of the genus Megalobrama was found by haplotype network (mtDNA) and principal component (SRAP) analyses. Moreover, the STRUCTURE analysis based on SRAP data showed that MTH could be assigned to a particular cluster, whereas conspecific M. terminalis in the Qiantang River and Jinsha River Reservoir belonged to the same cluster. Analysis of molecular variance (AMOVA) and Fst statistics for the mtDNA and SRAP data revealed significant genetic variance and differentiation among all detected populations. Taken together, the results suggest that MTH has a strong genetic differentiation from other populations within the genus Megalobrama, which contributes to effective utilization in artificial cultivation and breeding of MTH. Furthermore, these results also provide a scientific basis for the management of MTH as a separate conservation unit.
Keywords: Megalobrama terminalis; genetic differentiation; population structure; mitochondrial DNA; SRAP Megalobrama terminalis; genetic differentiation; population structure; mitochondrial DNA; SRAP

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MDPI and ACS Style

Hu, X.; Ma, B.; Li, C.; Jia, Z.; Jiang, X.; Ge, Y.; Tong, J.; Shi, L. Genetic Differentiation of an Endangered Megalobrama terminalis Population in the Heilong River within the Genus Megalobrama. Diversity 2020, 12, 404. https://doi.org/10.3390/d12100404

AMA Style

Hu X, Ma B, Li C, Jia Z, Jiang X, Ge Y, Tong J, Shi L. Genetic Differentiation of an Endangered Megalobrama terminalis Population in the Heilong River within the Genus Megalobrama. Diversity. 2020; 12(10):404. https://doi.org/10.3390/d12100404

Chicago/Turabian Style

Hu, Xuesong, Bo Ma, Chitao Li, Zhiying Jia, Xiaona Jiang, Yanlong Ge, Jingou Tong, and Lianyu Shi. 2020. "Genetic Differentiation of an Endangered Megalobrama terminalis Population in the Heilong River within the Genus Megalobrama" Diversity 12, no. 10: 404. https://doi.org/10.3390/d12100404

APA Style

Hu, X., Ma, B., Li, C., Jia, Z., Jiang, X., Ge, Y., Tong, J., & Shi, L. (2020). Genetic Differentiation of an Endangered Megalobrama terminalis Population in the Heilong River within the Genus Megalobrama. Diversity, 12(10), 404. https://doi.org/10.3390/d12100404

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