Estimation of marine metapopulation dynemics in mesoscale

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760439
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Civil and environmental engineering
• Research Institution: Osaka City University (2013-2014); National Institute for Land and Infrastructure Management (2012)
• Principal Investigator: KAMIMURA Satomi 大阪市立大学, 大学院工学研究科, 客員研究員 (10450785)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: マイクロサテライトマーカー / 汎用蛍光プライマー / 集団遺伝子解析 / 次世代シーケンサー / 東京湾 / ウミニナ類 / ムラサキイガイ / マルチプレックスPCR

Outline of Final Research Achievements

This study aims to elucidate the structures of the Mytilus galloprovincialis (planktonic larvae) and Batillaria attramentaria (B. cumingii, benthic juveniles) metapopulations in Tokyo Bay, where anthropogenic disturbance leads to the frequent disappearance and regeneration of their habitat. The metapopulation structures were assessed using microsatellite markers and no genetic distance (DA) was detected among M. galloprovincialis and B. cumingii populations. The result of NJ trees suggests that there is gene flow between the subpopulations of the west and east coasts, in both species. B. cumingii could maintain similar metapopulation structures in different cohorts, and the M. galloprovincialis metapopulation exhibited structural dynamics. We discuss the relationship between these results and the potential role played by dispersal ability (internal factor) and circulating flow (external factor) in driving these dynamics in Tokyo Bay.

Free Research Field

海洋生態学