title: Comparative phylogeography of two marine species of crustacean: Recent divergence and expansion due to environmental changes.
abstract: Environmental changes, such as changes in the coastal topography due to Eurasian plate movements, climate oscillation during the Pleistocene, and alteration of ocean currents, have complicated the geographical structure of marine species and deepened their divergence between populations. As two widely distributed species of crustacean (Oratosquilla oratoria and Eriocheir japonica), weak differences were expected due to their high dispersal potential of planktonic larvae with ocean currents. However, results showed a significant genetic divergence between north of China and south of China in the study. In addition, the estimated north-south divergence time (27-30.5 Myr) of mantis shrimp was near the time of the Himalayan movement, and the China-Japan clade divergence time (10.5-11.9 Myr) of mitten crabs was also coincident with the time of the opening of the Sea of Japan. Thus, we hypothesized that environmental changes in the coastal topography contributed to the marine species divergence. Furthermore, based on phylogenetic analysis, network analysis and haplotype distribution, we surmised that mitten crabs originated from a population with the oldest haplotype (H6) and then divided into the north and south populations due to the recent Eurasian plate movements and ocean currents. And lineage of Japan originated from the north population for the opening of the Sea of Japan. While O. oratoria was guessed to originate from two separate populations in the China Sea. The results of "star-like" network, negative values in neutral test, and Tajima's D statistics of two marine species supported a recent rapid population expansion event after the Pleistocene glaciations.
authors.affiliation: Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, People's Republic of China; Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng 224051, People's Republic of China.
authors.forename: Daizhen
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Chemical and Biological Engineering College, Yancheng Institute of Technology, Yancheng 224003, People's Republic of China.
authors.forename: Ge
authors.initials: G
authors.lastname: Ding
authors.affiliation: Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng 224051, People's Republic of China.
authors.forename: Baoming
authors.initials: B
authors.lastname: Ge
authors.affiliation: Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng 224051, People's Republic of China.
authors.forename: Huabin
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng 224051, People's Republic of China.
authors.forename: Boping
authors.initials: B
authors.lastname: Tang
authors.affiliation: Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, People's Republic of China. Electronic address: zhangdzyc@163.com.
authors.forename: Guang
authors.initials: G
authors.lastname: Yang
mesh_terms: D000818:Animals; D002681:China; D057231:Climate Change; D003445:Crustacea / Q000145:classification / Q000235:genetics*; D017753:Ecosystem; D003576:Electron Transport Complex IV / Q000235:genetics; D014644:Genetic Variation; D005843:Geography; D006239:Haplotypes; D007564:Japan; D008969:Molecular Sequence Data; D010140:Pacific Ocean; D010802:Phylogeny; D058974:Phylogeography / Q000379:methods; D017422:Sequence Analysis, DNA; D013045:Species Specificity; D014872:Water Movements
chemical_list: D003576:Electron Transport Complex IV
keywords: Crustacean; Divergence; Environmental change; Expansion; Phylogeography