Genetic mechanisms and evolutionary dynamics of diffuse coevolution in Drosophila-parasitoid systems

2014 Fiscal Year Final Research Report

• Project/Area Number: 23370005
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Hokkaido University
• Principal Investigator: KIMURA Masahito 北海道大学, 地球環境科学研究科(研究院), 特任教授 (30091440)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: ショウジョウバエ / 寄生蜂 / 共進化 / 軍拡競争 / 地理的モザイク

Outline of Final Research Achievements

This study first reported faunal compositions of Drosophila parasitoids in Japan and Southeast Asia. Through field survey and experimental analysis, the study further revealed that 1) there is at least a case where host resistance shows Mendelian inheritance, 2) there is a case where resistance incurs no cost or only small costs, 3) even in systems with multiple parasitoids and multiple hosts, generic resistance or virulence does not evolve, but resistance and virulence evolve under specific interaction of single parasitoid and single host, 4) it is possible that parasitoid-host systems show geographic mosaic.

Free Research Field

生態遺伝学