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.

环境变化对媒介蚊子的影响。该项目的重点是可能受环境变化影响的向量蚊子的变化。根据在东南亚进行的现场研究，该项目揭示了如下。在主要疟疾媒介之一的Anopheles Minimus组中，我们发现了来自日本Ishigaki岛的新兄弟姐妹。一个物种在印度尼西亚伦波克岛占据了类似的栖息地。 Flaviorstris。我们在泰国北部疟疾媒介密度和环境的30年记录中的统计分析表明，有3个主要疟疾媒介，An。 minimus group，an。 Maculatus Group和An。 DIRUS组在传输区域（TA）的密度尚未降低。尽管非传输区域（NTA）的密度显然降低了。除了人的迁移外，一个区域的矢量密度也被指示为另一种决定因素。通过使用卫星图像和充气仪之间的两个时期和1990年代之间的土地分类，与NTA中的森林减少相比，森林的减少也比NTA中的森林少。提出了森林砍伐对疟疾媒介的影响。关于登革热媒介，对埃及埃及和AE的各种收藏进行了检查。白化病。在AE中，对人类存在的吸引力很强。埃及。另一方面AE。白化病被植被吸引了很大的吸引。完全评估一个环境。 Minimus Group赞成一种新的方法受到挑战。 An的景观组成。使用根据固定协议拍摄的数字照片分析了最小栖息地。植被覆盖的重要性已证实该物种的侵扰。这种简单的方法被认为是值得的，以便将其用于对媒介蚊子栖息地的粗略评估。

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。

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）。

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。