History of evolution and its mechanisms in periodical cicadas

2014 Fiscal Year Final Research Report

• Project/Area Number: 22255004
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Evolutionary biology
• Research Institution: Shizuoka University
• Principal Investigator: YOSHIMURA Jin 静岡大学, 創造科学技術大学院, 教授 (10291957)
• Co-Investigator(Kenkyū-buntansha): SOTA Teiji 京都大学, 大学院理学研究科, 教授 (00192625)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 周期ゼミ / 進化メカニズム / 米国 / 分子系統解析 / シミュレーション / 素数 / 大発生 / アリー効果

Outline of Final Research Achievements

In this project, we demonstrate that 13- and 17-year broods have evolved independently in the three different taxonomic groups: decim, cassini and decula, as suggested by Alexander and Moore long time ago. In theoretical studies, newly named 13-year M. neotredecim could have evolved from a population of 17-year M. septendecim via hybridization with a few M. tredecim in the past. This study also showed the importance of Allee effect on the evolutionary changes of emergence years and brood shifts. We also showed various cases of adaptation to achieve the persistence or extinction avoidance, including human economic behavior.

Free Research Field

生物科学