| Project/Area Number |
11691130
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| Research Category |
Grant-in-Aid for Scientific Research (A).
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
生態
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| Research Institution | Faculty of Agriculture, Kagawa University |
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Principal Investigator |
ITO Fuminori Faculty of Agriculture, Kagawa Univ., Associate Professor, 農学部, 助教授 (50260683)
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| Co-Investigator(Kenkyū-buntansha) |
TSUJI Mizuki Faculty of Science, Toyama Univ., Research Associate, 理学部, 助手 (20222135)
NAKAMURA Koji Faculty of Science, Kanazawa Univ., Professor, 理学部, 教授 (70111755)
YAMAUCHI Katsusuke Faculty of Education, Gifu Univ., Professor, 教育学部, 教授 (30021322)
ITINO Takao Faculty of Science, Shinsyu Univ., Associate Professor, 理学部, 助教授 (20176291)
OHKAWARA Kyohsuke Faculty of Science, Kanazawa Univ., Research Associate, 理学部, 助手 (70283091)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥8,300,000 (Direct Cost: ¥8,300,000)
Fiscal Year 2000: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 1999: ¥4,200,000 (Direct Cost: ¥4,200,000)
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| Keywords | ants / ponerine ants / social organisation / symbionts / parasites / 共生 |
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| Research Abstract |
Social structure, symbionts and parasites of ant colonies, and local ant fauna were investigated in Indonesia and Malaysia. Ant fauna in Bogor Botanic Gardens, west Java, Indonesia was reported. Even though the Botanical gardens located in the center of city, we collected 216 ant species. Social structure of ponerine ants was investigated, and we found clear relationship between social structure and habitat characteristics : gamergate species (reproduced by mated workers)were common in disturbed area while ergatoid species (reproduced by wingless queens) were common in forests. Furthermore, in Gnamptogenys, gamergate species was collected in humid tropics (West Malaysia and Sumatera) while ergatoid species was found in seasonal tropics (east Java). These relationships between social structure and habitat condition seems to be explained by the frequency of opportunity of colonial fission. Relationship between social structure and symbiont biology was examined for Myrmecina. Morphological and behavioral specialization of symbionts is apparently related to social structure of host ants : ant species with ergatoid queens only have very specialized symbionts.
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