Temporal distribution and spatial pattern of abundance of the Rift Valley fever and West Nile fever vectors in Barkedji, Senegal
Temporal distribution and spatial pattern of abundance of the Rift Valley fever and West Nile fever vectors in Barkedji, Senegal
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DOI：
10.1111/j.1948-7134.2011.00184.x
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发表时间：
2011-12-01
影响因子：
1.7
通讯作者：
Diallo, Mawlouth
中科院分区：
文献类型：
--
作者：
Diallo, Diawo;Talla, Cheikh;Diallo, Mawlouth
2005年和2006年雨季在塞内加尔Barkedji研究了裂谷热（RVf）和西尼罗河热（WNF）蚊媒丰度的时间分布和空间格局。在79个地点，包括临时池塘，贫瘠，灌木状的稀树草原，树木繁茂的稀树草原，草原和村庄，在不同的距离（0和600米之间），从最近的池塘，每两周收集蚊子与干冰CDC灯陷阱。这些载体的时间分布在2005年和2006年之间变化，并与降雨量呈正相关的伊蚊（Aedimorphus）vexans巴顿，与降雨后一个月的滞后时间库蚊（库蚊）poicilipes（Theobald）和库蚊（库蚊）neavei Theobald。所有病媒在9月至11月之间的丰度和奇偶率最高。在贫瘠的临时池塘中观察到病媒丰度最高。诱捕器位置到最近池塘的距离与媒介生物的丰度呈负相关。考虑到线性回归方程，预计蚊子不会散开，并被捕蚊灯收集到最近的池塘，最远可达1，500米。这些研究结果的影响，在流行病学和控制裂谷热和西尼罗河在Barkedji进行了讨论。
The temporal distribution and spatial pattern of abundance of mosquito vectors of Rift Valley fever (RVf) and West Nile fever (WNf) were studied during the 2005 and 2006 rainy seasons at Barkedji, Senegal. Mosquitoes were collected every two weeks with CDC light traps with dry ice at 79 sites including temporary ponds, barren, shrubby savannah, wooded savannah, steppes, and villages at different distances (between 0 and 600 m) from the nearest pond. The temporal distributions of these vectors varied between 2005 and 2006 and were positively correlated with rainfall for Aedes (Aedimorphus) vexans Patton, with rainfall after a lag time of one month for Culex (Culex) poicilipes (Theobald) and Culex (Culex) neavei Theobald. All the vectors had their highest abundances and parity rates between September and November. The highest vector abundances were observed in the barren and temporary ponds. The distance of trap location to the nearest ponds was negatively correlated to the abundance of the vectors. Taking into account the linear regression equations, it was predicted that mosquitoes would not disperse and be collected by the light trap, up to 1,500 m to the nearest ponds. The implications of these findings in the epidemiology and control of RVF and WNF at Barkedji are discussed.