Genetic divergence and historical demography in the endangered large yellow croaker revealed by mtDNA |
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| Institution: | 1. Departamento de Genética, Universidad de Santiago de Compostela, Facultad de Biología, Santiago de Compostela E-15706, Spain;2. University of Leuven, Laboratory of Biodiversity and Evolutionary Genomics, Charles Deberiotstraat 32, B-3000 Leuven, Belgium;3. Departamento de Genética, Universidad de Santiago de Compostela, Facultad de Veterinaria, Lugo E-27002, Spain;4. Centre for Sustainable Tropical Fisheries and Aquaculture, Comparative Genomics Centre, College of Marine and Environmental Sciences, James Cook University, Townsville, 4811 QLD, Australia;1. Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, People''s Republic of China;2. Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng 224051, People''s Republic of China;3. Chemical and Biological Engineering College, Yancheng Institute of Technology, Yancheng 224003, People''s Republic of China |
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| Abstract: | Due to high level of fishing, many marine fish species are in danger of becoming extinct. The large yellow croaker, Larimichthys crocea, was once an important commercial marine species in China. At present, this croaker is seldom captured in the wild. In this work, mitochondrial DNA data was obtained from five populations of the yellow croaker from the Yellow Sea and the East China Sea to investigate their genetic divergence and demographic history. Results of phylogenetic analysis suggest two genetic lineages for this croaker, although the divergence was relatively shallow. This might reflect the effects of glacial isolation on population structure. Furthermore, our Bayesian based approach showed that the effective population size for both genetic lineages experienced recent sharp decline. This study provides new insights into the genetic divergence and historical demography of this croaker. Strict measures must be taken to protect this species. |
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