Evaluation of genetic diversity and population structure in Leptobotia microphthalma Fu & Ye, 1983 (Cypriniformes, Cobitidae)

By

Liu, Dongqi
Zhang, Shiming
Zuo, Xinyu
Zheng, Yi
Li, Jing

Type

Article

Date of Publication

2022

Original Publication

ZooKeys

Volume

1121

Pages

83--95

Subjects

Conservation biology fish ecology microsatellites

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1121.85953

 

Abstract

This paper reports the first account about dynamic changes on genetic diversity and population structure of Leptobotia microphthalma in the Yangtze River drainage due to dam constructions. The genetic diversity and population structure of twelve populations of L. microphthalma collected in 2010 and 2020 were estimated using 12 nuclear microsatellite markers. Reduction of genetic diversity between 2010 and 2020 was not significant in a paired t-test (p > 0.05), but population structure of L. microphthalma had a tendency to change: the genetic differentiation (Fst) among the five populations collected in 2010 were all insignificant (p > 0.05). However, differentiation (Fst) among some populations collected in 2020 were significant (p < 0.05), which indicated the population structure of L. microphthalma was changing. Correlation analysis indicated that negative correlations between the genetic diversities and geographical elevations among populations were significant for seven populations collected in 2020 (r = -0.819, p = 0.039), which means that populations of L. microphthalma in high elevation regions were more vulnerable than those in low elevation regions. Finally, some suggestions for conservation and restoration are proposed, such as artificial propagation, to prevent the further reduction of genetic diversity and population resources.