title: Lack of population genetic differentiation of a marine ovoviviparous fish Sebastes schlegelii in Northwestern Pacific.
abstract: Sebastes schlegelii is one of the fishes that aggregate around drifting seaweed during early development. To examine the population genetic structure of S. schlegelii, a 452-bp fragment of the mtDNA control region was sequenced and used to interpret life history characteristics and larval dispersal strategy. Two-hundred and twenty-one individuals from 13 sites across the entire range of S. schlegelii in China, Japan and Korea were analyzed. A neighbor-joining tree and network showed that there were no significant genealogical structures corresponding to sampling locations. AMOVA, pair-wise FST and exact test revealed no significant genetic differentiation among locations. The migration rate among locations was high based on the result of LAMARC. We conclude that larval dispersal with drifting seaweed and the current environmental factors may play an important role in shaping the contemporary phylogeographic pattern and genetic homogeneity of S. schlegelii.
authors.affiliation: a Key Laboratory of Marine Ecology and Environment Sciences, Institute of Oceanology, Chinese Academy of Sciences , Qingdao , P.R. China .|b Fisheries College, Ocean University of China , Qingdao , P.R. China .
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.affiliation: c National Research Institute of Fisheries Science , Yokohama , Japan , and.
authors.forename: Takashi
authors.initials: T
authors.lastname: Yanagimoto
authors.affiliation: b Fisheries College, Ocean University of China , Qingdao , P.R. China .
authors.forename: Xiumei
authors.initials: X
authors.lastname: Zhang
authors.affiliation: b Fisheries College, Ocean University of China , Qingdao , P.R. China .
authors.forename: Na
authors.initials: N
authors.lastname: Song
authors.affiliation: d Fisheries College, Zhejiang Ocean University , Zhoushan , P.R. China.
authors.forename: Tianxiang
authors.initials: T
authors.lastname: Gao
mesh_terms: D000818:Animals; D020029:Base Pairing / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics; D017753:Ecosystem; D005260:Female; D051456:Gene Flow; D014644:Genetic Variation; D005828:Genetics, Population; D005843:Geography; D006239:Haplotypes / Q000235:genetics; D052285:Ovoviviparity / Q000235:genetics*; D010473:Perciformes / Q000235:genetics*; D010802:Phylogeny; D011156:Population Density
chemical_list: D004272:DNA, Mitochondrial
keywords: Control region; Sebastes schlegelii; drifting seaweed; genetic structure; larval dispersal