Evolutionary Ecological Analysis of Animal Movement and its Fitness contorolling by Biogenic Amine

2017 Fiscal Year Final Research Report

• Project/Area Number: 26291091
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Okayama University
• Principal Investigator: Miyatake Takahisa 岡山大学, 環境生命科学研究科, 教授 (80332790)
• Co-Investigator(Kenkyū-buntansha): 佐々木 謙 玉川大学, 農学部, 教授 (40387353) ; 藤澤 隆介 八戸工業大学, 工学部, 講師 (40550554) ; 永谷 直久 京都産業大学, コンピュータ理工学部, 助教 (10636418)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 活動性 / 生理活性物質 / 選択実験 / 適応度 / コクヌストモドキ / 交尾成功 / 捕食回避 / 生体アミン

Outline of Final Research Achievements

Walking　behavior　of　a　model　beetle,　the　red　flour　beetle,　Tribolium　castaneum,　has　been　artificially selected for over 20 genertaoions. The strains selected for longer (WL) and shorter walking (WS) ability have been established. WL strains had higher mating success than WS strains only in males but WS strains had lowewr attack rates from predator than WL strains. The investigation of sexual traits showed that WS strains males had higher sperm competition ability than WL males, indicating these have different strategies for pre-mating and post-mating in the two strains. Also, the two strains had different shape in their gential organs, suggesting reproductive isolation concering for dispersal ability by walking in insects.

Free Research Field

進化生態学