Genetic structure of Pacific cod Gadus macrocephalus in Korean waters

Title
Genetic structure of Pacific cod Gadus macrocephalus in Korean waters
Author(s)
장요순; 이은경; 김성; 황선완
KIOST Author(s)
Lee, Eun Kyung(이은경)Kim, Sung(김성)Hwang, Sunwan(황선완)
Publication Year
2017-11-09
Abstract
The Pacific cod (Gadus macrocephalus) is an economically important species in Korea, yet little is research on the migration pattern and spawning sites of Pacific cod for the fishery management. To accumulate the basic information on the migration pattern and spawning sites, we analyzed the genetic structure of Pacific cod populations (East Sea, Yellow Sea and South Sea) in Korean waters using 14 microsatellite markers. The genetic diversity of Pacific cod populations were calculated using the mean number of alleles per locus, expected heterozygosity, proportion of missing alleles and polymorphic information content, and the genetic structure was confirmed by genetic distance between populations and principal component analysis. East Sea population (10.071) had more mean number of alleles per locus than South Sea population (7.643) and Yellow Sea population (8.000). The expected heterozygosity of South Sea population (Het-exp=0.442) was significantly lower than the expected heterozygosity of the East Sea population (Het-exp=0.482) and Yellow Sea population (Het-exp=0.495). The genetic diversity was the lowest in South Sea population. The genetic structure was similar between East Sea population and South Sea population. The genetic distance estimates for genetic structure confirmations were in the East Sea population and South Sea population as one group and in the Yellow Sea population as the other groups. These resgration pattern and spawning sites, we analyzed the genetic structure of Pacific cod populations (East Sea, Yellow Sea and South Sea) in Korean waters using 14 microsatellite markers. The genetic diversity of Pacific cod populations were calculated using the mean number of alleles per locus, expected heterozygosity, proportion of missing alleles and polymorphic information content, and the genetic structure was confirmed by genetic distance between populations and principal component analysis. East Sea population (10.071) had more mean number of alleles per locus than South Sea population (7.643) and Yellow Sea population (8.000). The expected heterozygosity of South Sea population (Het-exp=0.442) was significantly lower than the expected heterozygosity of the East Sea population (Het-exp=0.482) and Yellow Sea population (Het-exp=0.495). The genetic diversity was the lowest in South Sea population. The genetic structure was similar between East Sea population and South Sea population. The genetic distance estimates for genetic structure confirmations were in the East Sea population and South Sea population as one group and in the Yellow Sea population as the other groups. These res
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23591
Bibliographic Citation
Korean Federation of Fisherise Science and Technology Societies International Conference 2017, pp.408, 2017
Publisher
한국수산과학총연합회
Type
Conference
Language
English
Publisher
한국수산과학총연합회
Related Researcher
Research Interests

Fish ecology,Eggs & larval fish identification,어류 생태연구,난자치어 형태분류

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