Impact of irrigation development projects on disease vectors in West Timor, Indonesia

印度尼西亚西帝汶灌溉开发项目对病媒的影响

• 批准号: 13576009
• 负责人: MOGI Motoyoshi
• 金额: $ 4.54万
• 依托单位: Saga Medical School
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13576009/
• 关键词: rice field development; irrigation; dam; mosquito; vector-borne disease; malaria; Indonesia; West Timor; ダム建設; 魚; ネズミ; 国際研究者交流

Impact of environmental changes caused by dam construction on disease vectors, especially fauna, density and seasonal dynamics of mosquitoes, were investigated in the suburbs of Kupang, West Timor, Indonesia. Observation was started just before the start of the project and continued until the completion of construction of the dam and associated irrigation systems and the start of construction of new irrigated rice filed.The river above the dam site changed into the dam lake. As a consequence, mosquito larval habitats along river edges disappeared. In the new lake, the guppy and other released fished reproduced rapidly and suppressed mosquito breeding. Below the dam site, the amount of water flow decreased and slowly running parts increased. However, water level fluctuations due to artificial water discharge increased instability of mosquito habitats. Concrete-lined water channels connecting the dam and the rice fields were not mosquito habitats insofar as water flows but they became mo … More squito habitats if water was stagnant. The side ditches constructed along water channels in hill sides were often filled with the soil and kept stagnant water suitable for mosquito breeding. In the newly constructed irrigated rice fields, mosquitoes can breed throughout the year, and mosquito densities were high. Irrigation water is taken from the bottom of the dam through filters, so there was no fish in newly constructed channels and rice fields. Artificial introduction of larvivorous fishes into those habitats could effectively suppress mosquito breeding. Buildings destroyed and machines and other equipments discarded after the project afforded breeding sites for mosquito larvae. As basic information useful to prevention of vector-borne diseases in irrigation development projects in West Timor, distribution of larvivorous fishes and the parasites of rats were investigated.Dam construction produces new mosquito habitats, but risks of mosquito breeding can be reduced by appropriate and constant improvement and maintenance. A widely accepted idea that dam construction increase the aquatic habitats and risks of epidemics of vector-borne diseases such a malaria is not necessarily correct. It is necessary to recognize also that the irrigation development can contribute to disease vector mosquito control by the increased water manageability. Less

在印度尼西亚西帝汶古邦郊区，调查了大坝建设引起的环境变化对病媒的影响，特别是蚊子的动物群、密度和季节动态。观测是在工程开始前开始的，一直持续到大坝和相关灌溉系统的建设完成以及新灌溉稻田的建设开始。坝址以上的河流变成了堰塞湖。结果，河边的蚊子幼虫栖息地消失了。在新湖，孔雀和其他被放生的鱼类繁殖迅速，抑制了蚊子的繁殖。坝址以下，水流减少，缓流部位增多。然而，人工排水引起的水位波动增加了蚊子栖息地的不稳定性。连接大坝和稻田的混凝土衬砌水道就水流而言并不是蚊子的栖息地，但它们成为了mo…如果水停滞不前，会有更多的鱿鱼栖息地。沿山坡水道修建的边沟常填满泥土，积水适宜蚊虫滋生。在新建的灌溉稻田里，蚊子全年都能繁殖，蚊子密度很高。灌溉水是通过过滤器从大坝底部取出来的，所以新建的渠道和稻田里没有鱼。在这些栖息地人工引入幼食性鱼类可以有效地抑制蚊子的繁殖。在该项目为蚊子幼虫提供滋生地点后，建筑物被摧毁，机器和其他设备被丢弃。作为西帝汶灌溉开发项目中预防媒介传播疾病的基本信息，调查了幼虫和老鼠寄生虫的分布。大坝建设产生了新的蚊子栖息地，但通过适当和持续的改进和维护可以减少蚊子滋生的风险。一种被广泛接受的观点认为，大坝建设增加了水生栖息地，增加了疟疾等媒介传播疾病的流行风险，这一观点并不一定正确。还有必要认识到，灌溉发展可以通过增加水的可管理性来促进病媒蚊子的控制。较少

项目成果

Kamimura, K., Matsuse, I.T., Takahashi, H., Mogi, M., et al.: "Effect of temperature on the development of Aedes aegypti and Aedes albopictus"Medical Entomology and Zoology. 53・1. 53-58 (2002)

上村K.、松濑I.T.、高桥H.、茂木M.等：“温度对埃及伊蚊和白纹伊蚊发育的影响”医学昆虫学和动物学53・1。 2002）

Yabe, T., Mogi, M., Selomo, T. and Noor, N.B.: "Migration of the roof rat, Rattus rattus, between houses and paddy fields in Indonesia"Medical Entomology and Zoology. 52・1. 43-47 (2001)

Yabe, T.、Mogi, M.、Selomo, T. 和 Noor, N.B.：“屋顶鼠（Rattusrattus）在印度尼西亚房屋和稻田之间的迁移”医学昆虫学和动物学 52・1。 2001）

Yabe, T., Mogi, M., Selomo, M., Noor, N.B.: "Migration of the roof rat, Rattus rattus, between houses and paddy fields in Indonesia"Medical Entomology and Zoology. 52・1. 43-47 (2001)

Yabe，T.，Mogi，M.，Selomo，M.，Noor，N.B.：“屋顶鼠，Rattusrattus，在印度尼西亚的房屋和稻田之间的迁移”医学昆虫学和动物学 52・1。 2001）

Yabe, T., Magi, M., Selomo, T., Noor, N.B.: "Migration of the roof rat, Rattus rattus, between houses and paddy fields in Indonesia"Medical Entomology and Zoology. 52・1. 43-47 (2001)

Yabe, T.、Magi, M.、Selomo, T.、Noor, N.B.：“屋顶鼠（Rattusrattus）在印度尼西亚房屋和稻田之间的迁移”医学昆虫学和动物学 52・1。 2001）

Wahid, I., Sunahara, T., and Mogi, M.: "Maxillae and mandibles of male mosquitoes and female autogenous mosquitoes (Diptera: Culicidae)"Journal of Medical Entomology. 40・2. 101-109 (2003)

Wahid, I.、Sunahara, T. 和 Mogi, M.：“雄性蚊子和雌性自生蚊子的上颌骨和下颌骨（双翅目：蚊科）”医学昆虫学杂志 40・2（2003 年）。