Effects of microclimatic changes caused by land use and land cover on duration of gonotrophic cycles of Anopheles gambiae (Diptera: culicidae) in western Kenya highlands
Effects of microclimatic changes caused by land use and land cover on duration of gonotrophic cycles of Anopheles gambiae (Diptera: culicidae) in western Kenya highlands
复制标题
中国按蚊群（双翅目：蚊科）：核糖体 DNA 内转录间隔区 2 序列推断的物种区分和系统发育关系
DOI：
10.1603/0022-2585(2005)042
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发表时间：
2005-11-01
影响因子：
2.1
通讯作者：
Yan, GY
中科院分区：
文献类型：
--
作者：
Afrane, YA;Lawson, BW;Yan, GY
在肯尼亚西部一个疟疾流行高地进行了研究，以确定砍伐森林引起的小气候变化对疟疾媒介冈比亚按蚊Giles生殖营养周期持续时间的影响。用野外采集的F、A测定了生殖营养循环持续时间。冈比亚女性。肯尼亚西部卡卡梅加（海拔1，430 - 1，580米）森林砍伐地区的平均环境温度在10个月期间比森林地区高0.5摄氏度。在旱季，森林砍伐地区的平均室内温度升高了1.8摄氏度，蚊子的第一和第二生殖营养周期缩短了1.7天（59%）和0.9天（43%）。在雨季，位于森林砍伐地区的房屋的平均室内温度比森林地区的房屋高1.2摄氏度。第一和第二生殖营养周期的持续时间分别缩短了1.5 d（17%）和1.4 d（27%），在森林砍伐的高地网站。较短的蚊子生殖营养周期意味着增加每日叮咬频率，从而增加媒介能力。同时有证据表明，森林砍伐减少了A。冈比亚幼虫到成虫的发育时间和增加幼虫和成虫的存活率，这项研究表明，森林砍伐可以通过增加室内温度和缩短A.冈比亚蚊子。
Studies were carried out at a malaria epidemic-prone highland site in western Kenya to determine the effects of deforestation-caused microclimate change on the duration of the gonotrophic cycle of the malaria vector Anopheles gambiae Giles. Gonotrophic cycle duration was measured using field-collected F, A. gambiae females. Average ambient temperature in the deforested area of Kakamega (elevation 1,430 - 1,580 m above sea level), western Kenya, was 0.5 degrees C higher than that of the forested area over a 10-mo period. During the dry season, deforested areas showed an increased mean indoor temperature of 1.8 degrees C, and a shortened duration of the mosquitoes' first and second gonotrophic cycles, by 1.7 d (59%) and 0.9 d (43%). During the rainy season, the average indoor temperature of houses located in the deforested area was 1.2 degrees C higher than in houses in the forested area. The duration of the first and second gonotrophic cycles was shortened by 1.5 d (17%) and 1.4 d (27%), respectively, in the deforested highland site. A shorter mosquito gonotrophic cycle implies increased daily biting frequency and thus increased vectorial capacity. Together with evidence that deforestation reduced A. gambiae larva-to-adult developmental time and increased larval and adult survivorship, this study suggests that deforestation can further enhance malaria transmission potential in the highlands through increased indoor temperature and shortened gonotrophic cycle durations of A. gambiae mosquitoes.