Effects of environmental changes on vector mosquitoes

环境变化对媒介蚊子的影响

• 批准号: 11691215
• 负责人: TAKAGI Masahiro
• 金额: $ 8.71万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11691215/
• 关键词: Southeast Asia; malaria vectors; dengue vectors; environmental change; landscape; ecological approach; マラリア; デング熱; 環境

Effects of environmental changes on vector mosquitoes. This project focused on variations in vector mosquitoes possibly affected by environmental changes. Based on field studies conducted in southeast Asia, the project revealed as follows. Among Anopheles minimus group, one of main malaria vectors, we found new sibling species from Ishigaki Island, Japan. A species occupied the similar habitat in lombok island, Indonesia was distinguished as An. flaviorstris. our statistical analysis in 30 years record of malaria vector density and environment in northern Thailand revealed that 3 main malaria vectors, An. minimus group, An. maculatus group and An. dirus group, had not reduced in density in transmission areas (TA). While the densities had clearly reduced in non-transmission areas (NTA). In addition to migration of people, vector density in an area also was indicated as another determinant. Less decrease of the forest in the TA than in the NTA also was confirmed by landuse classification between two periods of 1980s and 1990s using satellite images and aerographs. Effect of deforestation on malaria vectors was suggested. Concerning to dengue vectors, various collections were examined for Aedes aegypti and Ae. albopictus. The attractiveness to human presence was strong in Ae. aegypti. On the other hand Ae. albopictus was rather strongly attracted to vegetation. To totally evaluate an environment to which An. minimus group favors a new approach was challenged. Landscape composition of An. minimus habitats was analyzed using digital photographs taken under fixed protocol. The importance of vegetation cover was confirmed for infestation of the species. This easy method was considered worth while to apply to rough evaluation of vector mosquito habitat.

环境变化对媒介蚊虫的影响。该项目的重点是可能受环境变化影响的病媒蚊子的变化。根据在东南亚进行的实地研究，该项目显示如下。在日本石垣岛微小按蚊群中发现了新的姊妹种。在印度尼西亚龙目岛发现一种类似生境的种，命名为安. flaviorstris我们对泰国北方30年的疟疾媒介密度和环境记录进行了统计分析，结果表明，泰国北部的3种主要疟疾媒介，按蚊和按蚊。minimus group，An. maculatus组和An.大劣毒组，传播区（TA）密度无降低。而非传播区（NTA）的密度明显降低。除了人口迁移之外，一个地区的病媒密度也被认为是另一个决定因素。森林减少的TA比在NTA也证实了土地利用分类之间的两个时期的20世纪80年代和90年代使用卫星图像和气象。有人提出森林砍伐对疟疾病媒的影响。关于登革热病媒，检查了埃及伊蚊和Ae.白纹伊蚊对人类存在的吸引力在Ae很强。埃及人。另一方面，Ae。白纹伊蚊对植物有较强的吸引力。全面评估一个安。主张新方法的极小组受到了挑战。景观组成的一个。使用在固定方案下拍摄的数码照片分析微小生境。植被覆盖的重要性得到证实的物种的侵扰。该方法简单易行，可用于媒介蚊虫栖息地的初步评价。

项目成果

Tsuda Y., Takagi M., Suwonkerd W: "A mark-release-recapture study on the spatial distribution of host-seeking anophelines in Thailand"Journal of Vector Ecology. 25(1). 16-22 (2000)

Tsuda Y.、Takagi M.、Suwonkerd W：“泰国寻找宿主按蚊空间分布的标记-释放-再捕获研究”媒介生态学杂志。

Pradya Somboon,Masahiro Takagi: "Anon-lethal,autosomal,recessive,melanotic mutant of Anopheles minimus species A"Annals of Tropical Medicine & Parasitology. 93・7. 767-771 (1999)

Pradya Somboon、Masahiro Takagi：“微小按蚊 A 种的非致死、常染色体、隐性、黑变突变体”《热带医学与寄生虫学年鉴》93·7（1999）。

Higa Y., Tsuda Y., Tuno N., Takagi M: "Tempo-spatial variation in feeding activity and density of Aedes albopictus (Diptera: Calicidae) at peridomestic habitat in Nagasaki, Japan"Medical Entomology and Zoology. 51(3). 205-209 (2000)

Higa Y.、Tsuda Y.、Tuno N.、Takagi M：“日本长崎家庭周围栖息地的白纹伊蚊（双翅目：杯科）摄食活动和密度的时空变化”医学昆虫学和动物学。

Y. Tsuda, M. Takagi, S. Wang, L. Tang: "Movement of Aedes aegypti (Deptera : Culicidae) released in a small isolated village on Hainan Island, China"Journal of Medical Entomology. 38(1). 93-98 (2001)

Y. Tsuda、M. Takagi、S. Wang、L. Tang：“在中国海南岛一个偏僻的小村庄释放的埃及伊蚊（属：蚊科）的运动”医学昆虫学杂志。

P.Somboon,N.Tuno,Y.Tsuda and M.Takagi: "Evidence of the species status of Anopheles flavirostris (Diptera : Culicidae)"Journal of Medical Entomology. 37・3. 476-479 (2000)

P.Somboon、N.Tuno、Y.Tsuda 和 M.Takagi：“黄嘴按蚊（双翅目：蚊科）物种状况的证据”《医学昆虫学杂志》37・3（2000 年）。