Analysis of natural selection operating upon genomic regions concerning species differentiation

2014 Fiscal Year Final Research Report

• Project/Area Number: 24570024
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Kobe University
• Principal Investigator: TAKAMI Yasuoki 神戸大学, 人間発達環境学研究科, 准教授 (60432358)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 種分化 / 交尾器形態 / 生殖隔離

Outline of Final Research Achievements

The present study aimed to reveal natural selection operating upon phenotipic traits and their genomic regions concerning speciation. Our special target was divergent genital morphologies in Ohomopterus ground beetles. We sampled adult individuals from populations located in interspecific contact areas, and proceeded the construction of phenotypic and genotypic dataset for the above-mentioned aim of the study. In addition, we conducted experimental evaluation of sexual selection operating upon genital morphologies. As a result, we detected divergent sexual selection in closely related species with divergent genital morphologies, Carabus maiyasanus and C. iwawakianus. Furthermore, we analyzed distributional data of these two species using GIS and ecological niche modeling. As a result, we detected evidences for that natural selection concerning environmental adaptation is also operate in the contact area of these species.

Free Research Field

進化生態学