Temporal changes in genetic diversity of Fenneropenaeus chinensis populations from jinzhou bay: implications for management | [Pakistan Journal of Zoology • 2023]

Author(s):

1. Qi Liu: College of Marine Science and Environment, Dalian Ocean University, Dalian, 116023, China; Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China

2. Weiyuan Li: Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China; College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China

3. Qi Zhang: Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China; College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China

4. Ziwei Wang: Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China; College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China

5. Rui Gao: College of Marine Science and Environment, Dalian Ocean University, Dalian, 116023, China; Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China

6. Wenlei Liu: College of Marine Science and Environment, Dalian Ocean University, Dalian, 116023, China; Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China

7. Lei Zhang: College of Marine Science and Environment, Dalian Ocean University, Dalian, 116023, China; Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China

8. Ying Liu: College of Marine Science and Environment, Dalian Ocean University, Dalian, 116023, China; Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China

9. Tao Tian: Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China; College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China

10. Hongwei Yan: Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, 116023, China; College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China

Abstract:

Fenneropenaeus chinensis is an important sfihery species in China. Hatchery-reared seeds have been released into the wild for improvement of shrimp productivity. Jinzhou bay is the major natural habitat and we used this location to temporally monitor the genetic eefcts of release of hatchery stocks on local F. chinensis populations across vfie years. A set of 13 microsatellite markers were used to evaluate genetic patterns across 2015, 2016 and 2019. We observed a signicfiant Hardy-Weinberg disequilibrium across all stocks. The inbreeding coecfiient (F is) was positive (0.121-0.131) for all stocks. A loss of genetic diversity was detected in the 2019 stock and signicfiant diefrences were observed for number of diefrent alleles, number of eefctive alleles, allelic richness and unbiased expected heterozygosity in the 2019 stock (P < 0.05). The highest pairwise relatedness and the lowest observed heterozygosity were also observed in 2019 stock. Moreover, a small but signicfiant genetic diefrentiation was detected between the 2019 stock and the stocks of the previous two years. Given the continuously large scale of articfiial enhancements in this area, these data may indicate that releases of hatchery-reared F. chinensis individuals may be associated with inbreeding and potentially the reduction in genetic diversity of the F. chinensis population.

Page(s): 1881-1889

DOI: 10.17582/journal.pjz/20211104141137

Published: Journal: Pakistan Journal of Zoology, Volume: 55, Issue: 4, Year: 2023

Keywords:

Stock enhancement , Genetic diversity , Management , Microsatellite markers , eolgtFenneropenaeus chinensis

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