Multiple speciation involved with enlargement of body size in millipedes

• Project/Area Number: 24570103
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: Kumamoto University
• Principal Investigator: TANABE Tsutomu 熊本大学, 教育学部, 教授 (30372220)
• Co-Investigator(Renkei-kenkyūsha): SOTA Teiji 京都大学, 大学院理学研究科, 教授 (00192625)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: 種分化 / 体サイズ / ヤスデ / ハエ / 寄生 / 擬態 / 生殖的隔離

Outline of Final Research Achievements

Relationships between speciation and body size and between speciation and body-color mimicry, and factors involved in body-size evolution in the millipede genera Riukiaria and Parafontaria distributed in Japan were investigated and the following results were obtained. (1) Molecular phylogeny of the millipedes suggests that about three larger species (4.5~6cm) may have diverged form the widespread smaller species Riukiaria semicircularis semicircularis and one of the larger species may have hybridized with R. semicircularis semicirculars after its divergence. (2) Parasitisim of the fly species Syngamoptera flavipes for R. semicircularis semicircularis might be a selection pressure that decreases the body size of the millipede species. (3) Multiple speciation occurred in Parafontaria might affect the evolution of the Mullerian mimicry for body color observed between Riukiaria and Parafontaria.

Research Products

• [Journal Article] Chemical Polymorphism in Defense Secretions during Ontogenetic Development of the Millipede Niponia nodulosa (2015)
  • Author(s): Kuwahara, Y., Ichiki Y., Morita M., Tanabe T., Asano Y.
  • Journal Title: Journal of Chemical Ecology Volume: 41 Issue: 1 Pages: 15-21
  • DOI: 10.1007/s10886-014-0536-8
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] ヤスデ2種で新たに確認された抱卵行動 (2014)
  • Author(s): 工藤慎 一, 桑原保正, Zoltan Korsos, 市来弥生, 森将 史, 浅野泰久, 中村泰 之, 田辺 力
  • Journal Title: 昆蟲（ニューシリーズ） Volume: 17 Pages: 1-3
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Both male and female novel traits promote the correlated evolution of genitalia between the sexes in an arthropod (2014)
  • Author(s): Tanabe, T. and T. Sota
  • Journal Title: Evolution Volume: 68 Issue: 2 Pages: 441-452
  • DOI: 10.1111/evo.12288
  • Peer Reviewed
• [Presentation] フジヤスデAnaulaciulus spに存在する2-alkanone類の同定 (2015)
  • Author(s): 桑原保正･田辺 力･浅野泰久
  • Organizer: 日本農芸化学会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2015-03-27
• [Presentation] ヤスデ類における体サイズ大型化を伴う種分化 (2013)
  • Author(s): 田辺 力・曽田貞滋
  • Organizer: 日本生態学会
  • Place of Presentation: 静岡県コンベンションアーツセンター
• [Presentation] オビヤスデ目未同定種が分泌する分泌物質Ｍ162の同定 (2012)
  • Author(s): 森田將史・市来弥生・桑原保正・田辺力・浅野泰久
  • Organizer: 日本環境動物昆虫学会
  • Place of Presentation: 名古屋大学
• [Book] 日本土壌動物―分類のための図解検索 第二版（ヤスデ綱担当） (2015)
  • Author(s): 篠原圭三郎，田辺 力，Korsos, Z
  • Total Pages: 42
  • Publisher: 東海大学出版部
• [Book] 小学館の図鑑・NEO 昆虫 新版（ムカデ綱・ヤスデ綱担当） (2014)
  • Author(s): 小池啓一，小野展嗣，町田龍一郎，田辺 力
  • Total Pages: 2
  • Publisher: 小学館
• [Book] A species catalog of the millipede family Xystodesmidae (Diplopoda: Polydesmida) (2014)
  • Author(s): Marek P., Tanabe T. and Sierwald P.
  • Total Pages: 117
  • Publisher: Virginia Museum of Natural History