| Project/Area Number |
06041067
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
TAKANAKA Osamu Professor, Primate Research Institute, 霊長類研究所, 教授 (00093261)
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| Co-Investigator(Kenkyū-buntansha) |
BAMBANG Suryobroto Lecturer, Bogor Agricultural University, 理学部, 講師
WATANABE Kunio Instructor, Primate Research Institute, 霊長類研究所, 助手 (60158623)
GOTOH Shunji Instructor, Primate Research Institute, 霊長類研究所, 助手 (90093343)
HAMADA Yuzuru Associate Professor, Primate Research Institute, 霊長類研究所, 助教授 (40172978)
FUJITA Kazuo Associate Professor, Primate Research Institute, 霊長類研究所, 助教授 (80183101)
BAMBONG Sury ボゴール農科大学, 理学部, 講師
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| Project Period (FY) |
1994 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥8,400,000 (Direct Cost: ¥8,400,000)
Fiscal Year 1995: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1994: ¥4,200,000 (Direct Cost: ¥4,200,000)
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| Keywords | Macaque / Sulawesi macaque / Evolution / Hybrid / Molecular evolution / External morphology / Species recognition / Trombiculid mites / Malaria |
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| Research Abstract |
The two species of the Sulawesi macaques, Macaca tonkeana and M.hecki made hybrid monkeys in Kebun Kopi near Palu city in Central Sulawesi. We conducted capture and release field works to inspect external morphological charcters, parasite infection, and to take small sample of testis by biopsy and blood samples. In the hybrid zone, big clinal variations in their morphological characters were detected from one species to the other. However, a group very closely related to one species was also found in the central part of the zone. This indicated complex distribution of those hybrid monkeys.
In the clinical inspection. almost all of the monkeys were infected by internal parasites (Anatrichosoma sp.) as well as external parasite (Trombiculid mites). Most of hybrid macaques showed anemic trait and infected by Maralia and indeed some macaques lacked haptoglobin which indicated hemolytic anemia. Parasite infection may not limit to the hybrid macaques since, one goup of pure hecki, 23 heads showed also similar infection of parasites. We examined the hormonal levels and spermatogenesis from assuption that those hybrid macaques are weak reproductive abilities, but we could found any abnormal results.
Attractivities of each of the Sulawesi macaques by the same and the other species were examined by showing them the picutures. Male monkeys tended to be attracted by the individula of the same species, but the tendency was weak for female macaques. This result may relate to the reproductive structure of the macaques, matrilineal system.
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