Mutualistic interactions between ants and fruits, with special attention to seed dispersal and seed cleaning

• Project/Area Number: 18570014
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Kanazawa University
• Principal Investigator: OHKAWARA Kyohsuke (KYOSUKE Okawara) Kanazawa University, 自然システム学系, 助教 (70283091)
• Co-Investigator(Kenkyū-buntansha): KINO Toshiharu 京都工芸繊維大学, 生物科学, 准教授 (40414875) ; KINOSHITA Eiichiro 金沢大学, 環日本海域環境研究センター, 准教授 (70234317)
• Project Period (FY): 2006 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,220,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥720,000); Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2007: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2006: ¥1,100,000 (Direct Cost: ¥1,100,000)
• Keywords: アリ / 果実 / 種子 / カビ / 共生

Research Abstract

哺乳類・鳥散布植物、約50種について、それら果実に対するアリ類の行動を観察したところ、雑食性アリ種による多様な効果が観察された。その効果は果実のサイズや形態的特徴によって異なっており、國内の混交林では小サイズの果実はアリ類に運搬される頻度が高かった。またアリ散布へ果実形態を特殊化させた植物種もいる事が示唆された。一方、ボルネオの熱帯林では大型果実に対するクリーニング行動も高頻度で見られ、特にニクズク科ではその効果は果肉のカビ感染の頻度と大きく関係していた。

Research Products

• [Journal Article] Condition al mating tactics in queen of inquiline ant Vollenhovia nipponica (2009)
  • Author(s): M. Okamoto, K. Ohkawara
  • Journal Title: Ethology, E cology & Evolution 21 Pages: 137-146
  • Peer Reviewed
• [Journal Article] Conditional mating tactics in queen of inquiline ant Vollenhovia nipponica. (2009)
  • Author(s): M.Okamoto, K.Ohkawara
  • Journal Title: Ethology, Ecology & Evolution 21 Pages: 137-146
  • Peer Reviewed
• [Journal Article] Genetic structures in colonies at a new site of Vollenhovia emeryi(Hymenoptera : Formicidae)with clonal reproduction. (2009)
  • Author(s): M.Okamoto, K.Ohkawara
  • Journal Title: Sociobiology 55(1) Pages: 191-196
  • Peer Reviewed
• [Journal Article] Dominance hierarchies and aggressive behavior among queens of the inquiline ant Vollenhovia nipponica (2008)
  • Author(s): Satoh, A., K. Ohkawara
  • Journal Title: Insectes Sociaux 55 Pages: 200-206
  • Peer Reviewed
• [Journal Article] Dominance hierarchies and aggressive behavior among ueens of the inquiline ant (2008)
  • Author(s): Satoh, A. and K.Ohkawara
  • Journal Title: Vollenhovra nipponicInsectes Sociaux vol.55 Pages: 200-206
  • Peer Reviewed
• [Journal Article] Dominance hierarchies and aggressive behavior among queens of the inquiline antVollenhovia nipponic (2008)
  • Author(s): Satoh, A., and K. Ohkawara
  • Journal Title: Insectes Sociaux (印刷中)
  • Peer Reviewed
• [Journal Article] Clonal reproduction by males in the ant Vollenhovia emeryi(Wheeler) (2008)
  • Author(s): Kobayashi, K., E. Haegawa and K. Ohkawara
  • Journal Title: Entomological Science (印刷中)
  • Peer Reviewed
• [Journal Article] Biasing mechanisms of sex investment ratio in themonogynous and monandrous ant Aphaenogaster smythiesi japonica Forel (2007)
  • Author(s): Iwanishi, S., S. Shin, K. Ohkawara
  • Journal Title: Ethology, Ecology and Evolution 19 Pages: 275-289
  • Peer Reviewed
• [Journal Article] Biasing mechanisms of sex investment ratio in themonogynous and monandrous ant Aphaenogaster smythiesi japonica Forel (2007)
  • Author(s): Iwanishi, S., S. Shin and K. Ohkawara
  • Journal Title: Ethology, Ecology and Evolution 19(4) Pages: 275-289
  • Peer Reviewed
• [Journal Article] Clonal reproduction and genetic caste differences in a queen-polymorphic ant (2006)
  • Author(s): K. Ohkawara, M. Nakayama, A. Satoh, A. Trindl, J. Heinze
  • Journal Title: Vollenhovia emeryi, Biology Letters 2 Pages: 359-363
  • Peer Reviewed
• [Journal Article] Clonal reproduction and genetic caste differences in a queen-polymorphic ant, Vollenhovia emeryi. (2006)
  • Author(s): K.Ohkawara, M.Nakayama, A.Satoh, A.Trindl, J.Heinze
  • Journal Title: Biology Letters 2 Pages: 359-963
• [Presentation] 排泄分析による渡り鳥の種子散布行動解析 (2007)
  • Author(s): 松平有加・大河原恭祐
  • Organizer: 日本鳥学会2007年度大会
  • Place of Presentation: 熊本大学(熊本)
  • Year and Date: 2007-09-23
• [Presentation] 排泄分析による渡り鳥の種子散布行動解析 (2007)
  • Author(s): 松平有加・大河 原恭祐
  • Organizer: 日本鳥学会2007年度大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2007-09-23
• [Presentation] 排泄分析による渡り鳥の種子散布行動解析 (2007)
  • Author(s): 松平有加・大河原恭祐
  • Organizer: 日本鳥学会2007年度大会
  • Place of Presentation: 熊本
  • Year and Date: 2007-09-21