Abstract
The oriental river prawn (Macrobrachium nipponense) is mainly distributed in East Asia. The phylogeography, population genetic structure and historical demography of this species in the East Asia were examined by using partial sequences of the cytochrome oxidase subunit I (COI) and 16S rRNA in mitochondrial DNA. Ten populations that included 239 individuals were collected from Taiwan (Shihmen Reservoir, SMR, Mingte Reservoir, MTR and Chengching Lake Reservoir, CLR), mainland China (Taihu Lake, TLC, Min River, MRC, Jiulong River, JRC and Shenzhen Reservoir, SRC), Japan (Biwa Lake, BLJ and Kasumigaura Lake, KLJ) and Korea (Han River, HRK). The nucleotide diversity (π) of all individuals was 0.01134, with values ranging from 0.0089 (BLJ, Japan) to 0.01425 (MTR, Taiwan). A total of 83 haplotypes were obtained, and the haplotypes were divided into 2 main lineages: lineage A included the specimens from BLJ, KLJ, CLR, MTR, TLC, MRC and JRC, and lineage B comprised the ones from HRK, SRC, SMR, MTR, TLC, MRC and JRC. Lineage A could be further divided two sub-lineages (A1 and A2). Individuals of lineage A2 were only from TLC. Demographic expansion was observed in each lineage, starting within the second-to-latest interglacial period for lineage A and within the last glacial period for lineage B. All FST values among the ten populations were significantly different, except for the values between MRC and JRC, and SMR and SRC. The phylogeography and genetic structure of M. nipponense in East Asia might be influenced by Pleistocene glacial cycles, lake isolation and human introduction. The possible dispersal routes of M. nipponense in the East Asia were also discussed.
Highlights
The complex geological events and climatic history of various regions helped shape current phylogeographical patterns [1, 2]
The present genetic structures of populations in the marginal seas of the East Asia have been greatly affected by ice ages
For lineage A, we found that KLJ and BLJ populations located the most north sampling areas liked as HRK population in lineage B had the lowest nucleotide and haplotype diversities
Summary
The complex geological events and climatic history of various regions helped shape current phylogeographical patterns [1, 2]. The current population genetic structure of a PLOS ONE | DOI:10.1371/journal.pone.0173490. Population structure of the oriental river prawn specific species had been influenced by the interactions of biology, geography, and climatic shifts [3]. During the last glacial maximum, the sea level was 130–150 m lower than the present level in the East China Sea and 100–120 m lower in the South China Sea [4, 5]. Recent studies have shown that there are many rivers that were separated by the sea but became connected to one another during the glacial period, and this resulted in gene flow between different river systems [7]. The present genetic structures of populations in the marginal seas of the East Asia have been greatly affected by ice ages
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
