Genetic population structure of Nibea albiflora in Yellow Sea and East China Sea

Abstract

The population genetic structure and level of gene flow of Nibea albiflora from the Yellow Sea and the East China Sea were examined with a 479-bp segment of a mtDNA control region. In total, 65 samples were collected from three locations and 37 haplotypes were obtained. Mean haplotype diversity and nucleotide diversity for the three populations ranged from 0.9130 Ϯ 0.0308 (Zhoushan) to 0.9926 Ϯ 0.0230 (Xiamen), and from 0.0073 Ϯ 0.0043 (Qingdao) to 0.0099 Ϯ 0.0057 (Xiamen). Analysis of molecular variance and pairwise FST revealed little genetic structure between the Yellow Sea and the East China Sea in N. albiflora. But based on the exact test of differentiation, the null hypothesis that N. albiflora within the Yellow Sea and the East China Sea constitutes a panmictic mtDNA gene pool was rejected. This might be caused by the broad spawning areas but not by the Yangtze River outflow. Mismatch distribution revealed that N. albiflora has undergone population expansion, possibly before the last 85 000-170 000 years. The existence of high gene flow between stocks in the studied area was supported by our results. Annual migrations, larval drift in the ocean currents, and recent range expansion could be the reasons for little genetic structure in the studied area.

High genetic diversity and low differentiation in mud crab (Scylla paramamosain) along southeastern coast of China revealed by microsatellite markers

“…Generally, marine fishes are considered to have a low level of genetic differentiation among different geographic populations because of the high dispersal capabilities, large population sizes and relatively small barriers in the marine environment (Beheregaray and Sunnucks, 2001 difference in the population genetic structure between the Yellow Sea and East China Sea observed using mtDNA (Han et al, 2008). For the shrimp Fenneropenaeus chinensis, no significant population genetic differentiation between the Yellow Sea and Bohai Sea was found using both microsatellite DNA and mtDNA (Liu et al, 2006;Li et al, 2009b).…”

Genetic diversity in two Japanese flounder populations from China seas inferred using microsatellite markers and COI sequences

“…Pelagic marine fi shes were expected to show low levels of genetic differentiation in different regions because of their higher dispersal potential during the planktonic egg, larval or adult history stages coupled with an absence of physical barriers between the ocean basin and adjacent continental margins (Yu et al, 2002;Cabranes et al, 2008;Han et al, 2008). Although adult Japanese fl ounder are relatively sedentary, their larvae and juveniles are regarded as being pelagic for more than a month (Zhang et al, 1965).…”

Genetic Diversity Analysis of Indian Salmon, <i>Eleutheronema tetradactylum</i> from South Asian Countries Based on Mitochondrial COI Gene Sequences

“…In general genetic homogeneity in marine fishes can be attributed to high dispersal potential during the planktonic egg and larval stages coupled with an absence of physical barriers between ocean basins and adjacent continental margins. Previous studies have revealed that the ocean currents in the China Sea facilitate the dispersal of marine larvae among distant populations (Han et al, 2008;Shui et al, 2009;Xiao et al, 2009). Data analysis from the COI gene sequences revealed genetic heterogeneity in E. tetradactylum populations in 51, 57, 61 and 71 FAO fishing areas.…”