Genetic Variability of Mass-Selected and Wild Populations of Yellow Drum (Nibea albiflora) Revealed Using Microsatellites

Author:

Yu Qin12,Liu Simiao23,Zhu Qihui2ORCID,Chen Ruiyi2,Hu Weihua2,Xu Dongdong2ORCID

Affiliation:

1. School of Fisheries, Zhejiang Ocean University, Zhoushan 316021, China

2. Key Lab of Mariculture and Enhancement of Zhejiang Province, Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China

3. School of Marine Sciences, Ningbo University, Ningbo 315211, China

Abstract

In this study, twelve polymorphic microsatellite loci were screened to evaluate the genetic diversity of five yellow drum (Nibea albiflora) populations in the Zhoushan Sea region of the East China Sea, including one wild population (WP), one artificially propagated population (common population, CP), and three breeding populations (parent population, F4; all-female population, AF; and neo-male population, NeoG). The results of genetic diversity analyses showed that all five yellow drum populations had relatively high genetic diversity, with the highest in WP and the lowest in NeoG. Genetic structure analyses showed that the level of genetic differentiation among populations was low, with that between CP and F4 being the largest, whereas that between CP and WP was the smallest. Mutation–drift equilibrium analysis showed that the five populations likely did not experience a recent bottleneck. Our results suggest the CP population was the most suitable for large-scale release for stock enhancement, and precautionary measures shall be taken for the AF population before it is used for cage culture to avoid potential genetic concerns of the wild population. Nevertheless, further genetic diversity monitoring is needed to evaluate genetic effects and avoid the negative impact of excessive genetic differentiation between breeding and wild populations.

Funder

Zhejiang Provincial Natural Science Foundation of China for Distinguished Young Scientists

National Natural Science Foundation of China

Publisher

MDPI AG

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