Studies on the evolutionary origin chromosomal differentiation and expansion process in a brachypterous grasshopper

2016 Fiscal Year Final Research Report

• Project/Area Number: 25291088
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: University of the Ryukyus
• Principal Investigator: TATSUTA Haruki 琉球大学, 農学部, 教授 (50370268)
• Co-Investigator(Kenkyū-buntansha): 菅野 良一 北海道大学, (連合)農学研究科(研究院), 専門研究員 (00648826) ; 秋元 信一 北海道大学, (連合)農学研究科(研究院), 教授 (30175161)
• Research Collaborator: AKIMOTO Shin-ichi 北海道大学 ; BUGROV Alexander ロシア科学アカデミー, シベリア支部 ; WARCHALOWSKA-SLIWA Elzbieta ポーランド科学アカデミー ; GRZYWACZ Beata 日本学術振興会外国人, 特別研究員
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 種分化 / バッタ

Outline of Final Research Achievements

To explore spatial genetic structures using molecular markers in a brachypterous grasshopper Podisma sapporensis in which a new sex determination system has been established by the process of translocation between a autosome and X chromosome, we have designed primers that amplify the flanking regions of tandem repeats using the next generation sequencer. We also estimated approximate genome size in this species. Furthermore, we found the infection of endosymbiont in P. sapporensis. Copulatory behavior and copulation duration were also recorded and compared between different chromosomal races.

Free Research Field

進化生物学