| Project/Area Number |
13670249
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
寄生虫学(含医用動物学)
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| Research Institution | National Institute of Infectious Diseases (2002-2004)
Nagasaki University (2001) |
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Principal Investigator |
TSUDA Yoshio National Institute of Infectious Diseases, Department of Medical Entomology, Chief, 昆虫医科学部, 室長 (20207393)
|
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| Co-Investigator(Kenkyū-buntansha) |
SAWABE Kyoko National Institute of Infectious Diseases, Department of Medical Entomology, Chief, 昆虫医科学部, 室長 (10215923)
TAKAGI Masahiro Institute of Tropical Medicine, Department of Vector Ecology and Environment, Professor, 熱帯医学研究所, 教授 (60024684)
SUGIYAMA Akira Nagoya Women's University, Department of Domestic Science, Professor, 家政学科, 教授 (30196761)
ESHITA Yuki Oita University, Department of Infectious Disease Control, Associate Professor, 医学部, 助教授 (10082223)
TUNO Nobuko Institute of Tropical Medicine, Department of Vector Ecology and Environment, Research Associate, 熱帯医学研究所, 助手 (60295102)
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| Project Period (FY) |
2001 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2004: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2003: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | Aedes aegypti / Dengue fever / Variation / Urbanization / 遺伝的変化 |
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| Research Abstract |
Variation of dorsal scale pattern of Aedes aegypti was examined in Southeast Asian countries ; Vietnam, Indonesia, Laos, Singapore, Philippines, and Thailand. More than 95% of adults collected in Vietnam, Laos and Thailand were dark color, whereas those from Singapore, Philippines and Indonesia were paler and the variation of dorsal scale pattern was wider. An artificial selection for dorsal scale pattern was performed by using adults collected from Thailand, Vietnam and Indonesia, and dark- and pale-strain was successfully established. The population characteristics were examined and compared between the dark and pale-strain derived from Surabaya, Indonesia. The larvae of the dark-strain developed faster, longevity of females reared with only sugar solution didn't differ between the strains, females of the dark-strain lived longer than those of the pale-strain when blood feeding was allowed, and net reproductive rate of the dark-strain was larger than the pale-strain. A mark-release-recapture experiment of ovipositing females of the dark- and pale-strain was carried out in Airlangga University, Surabaya, Indonesia, Females of the dark-strain laid a large part of eggs in ovi-traps placed at dark places. Whereas females of the pale-strain preferred to lay eggs to ovi-traps placed at near the window.
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