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Genetic structure of J apanese C hattonella marina ( R aphidophyceae) populations revealed using microsatellite markers
Author(s) -
Demura Mikihide,
Nakayama Takuro,
Kasai Fumie,
Kawachi Masanobu
Publication year - 2014
Publication title -
phycological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.438
H-Index - 44
eISSN - 1440-1835
pISSN - 1322-0829
DOI - 10.1111/pre.12047
Subject(s) - biology , gene flow , population , genetic diversity , microsatellite , genetic divergence , genetic distance , isolation by distance , genetic structure , population genetics , ecology , genetic variation , zoology , allele , genetics , gene , demography , sociology
Summary C hattonella marina var. antiqua and C . marina var. marina ( R aphidophyceae) are red tide‐forming, harmful phytoplankton species. We investigated the genetic diversity and genetic relationship among the populations using microsatellite markers to identify putative sources of C . marina var. antiqua and C . marina var. marina in J apanese coastal populations. A positive correlation between genetic divergence and geographical distance (isolation by distance) was recognized for C . marina var. antiqua . The C . marina var. antiqua populations were established throughout a geological time scale, and genetic divergence had progressed in each population with gene flow depending on geographic distances. In contrast, isolation by distance was not observed for C . marina var. marina populations, and the genetic divergence among populations was extremely high. The T okyo B ay population of C . marina var. marina , which was first recognized in 2008, had many private alleles but was related to the K agoshima B ay population. The T okyo B ay population may have been established by several invasions from the K agoshima B ay population and other regions.