Population genetic structure of the Korean threadsail filefish (Stephanolepis cirrhifer) based on microsatellite marker analysis |
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| Institution: | 1. Biotechnology Research Division, National Fisheries Research and Development Institute, Busan 619-705, Republic of Korea;2. Jeju Province Fisheries Research Institute, Jeju 699-814, Republic of Korea;1. Departament de Biologia Animal, Biologia Vegetal i d’Ecologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain;2. Institut de Ciències del Mar (ICM-CSIC), Pg. Marítim de la Barceloneta 37–49, 08003 Barcelona, Spain;1. Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional del Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CCT-La Plata CONICET-UNLP), Calle 120 s/n e/60 y 64, 1900, La Plata, Buenos Aires, Argentina;2. Universidad de Antofagasta, Facultad de Ciencias del Mar y recursos naturales, Departamento de Ciencias Acuáticas y Ambientales, Casilla 170, Antofagasta, Chile;1. Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Caixa Postal 6192, 13083-970, Campinas, SP, Brazil;2. Faculdade de Engenharia Mecânica (FEM) – Universidade Estadual de Campinas (UNICAMP), Cidade Universitária “Zeferino Vaz”, 13083-860 Campinas, SP, Brazil;3. Centro de Energia Nuclear na Agricultura (CENA) – Universidade de São Paulo (USP), Avenida Centenário, 303–São Dimas, 13400-970, Piracicaba, SP, Brazil;1. Amec Foster Wheeler, Rancho Cordova, CA, United States;2. Consiglio per la Ricerca in Agricoltura e l’analisi dell’economica agraria, C.R.E.A, Bari, Italy;3. Division of Geographic Information, Commonwealth Office of Technology, Frankfort, KY, United States;4. Data Science and Modeling Team, Deere & Company, Urbandale, IA, United States;1. School of Materials Science and Nanotechnology, Jadavpur University, Kolkata 700032, India;2. Mineral Processing & Technology Research Centre, Department of Metallurgy, Faculty of Engineering & The Built Environment, University of Johannesburg, 2098, South Africa |
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| Abstract: | The threadsail filefish Stephanolepis cirrhifer is one of the most important commercial fish resources in Korea. However, its natural populations have declined drastically over the last several decades. To investigate the genetic characteristics of the threadsail filefish for conservation and management purposes, its genetic variation was analyzed in Korean fishing grounds using 11 microsatellite loci. All populations showed moderate genetic diversity (mean number of alleles (NA) = 8.6, expected heterozygosity (He) = 0.73), representing a slightly lower level of genetic variability than other congeneric species. The presence of a weak genetic population substructure was detected (FST = 0.023, RST = 0.030, P < 0.001), but this substructure did not feature significant isolation based on the distance between populations. This differentiation may be primarily attributable to genetic differences between populations from Geomundo and other localities, based on relative low level of gene flow, a high level of pairwise FST and RST or the position of this population in a phylogenetic tree. An analysis of molecular variance (AMOVA) also revealed a greater part of the variation within the population and genetic differentiation among the samples analyzed and identified two genetic clusters. The possibility of a recent genetic bottleneck was observed in some populations of S. cirrhifer. Given the prevailing ocean currents and the intensity of threadsail filefish harvesting activities in Korea, the possibility that human harvest and stock enhancement activities may have partially contributed to our detected genetic pattern cannot be excluded. Management strategies that take these findings into account might lower the risk of harmful genetic change in the species. |
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| Keywords: | Korean threadsail filefish Genetic diversity Genetic structure Population differentiation |
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