溴氰菊酯：一种有前景的蚊虫控制剂，可用于防治埃及伊蚊的成蚊阶段。

Deltamethrin: Promising mosquito control agent against adult stage of Aedes aegypti L.

机构信息

Department of Zoology, Acharya Narendra Dev College (University of Delhi), New Delhi 110019, India.

出版信息

Asian Pac J Trop Med. 2011 Jun;4(6):430-5. doi: 10.1016/S1995-7645(11)60120-X.

DOI:10.1016/S1995-7645(11)60120-X

PMID:21771693

Abstract

OBJECTIVE

To evaluate the effects of deltamethrin against field-collected adults of Aedes aegypti L. (Ae. aegypti).

METHODS

The adults were selected with 0.025% deltamethrin for 40 successive generations. The selected adults were tested with 4% DDT and the emerging larvae were tested with various insecticides to study the cross-resistance spectrum. The knockdown and irritability studies were carried out in adult mosquitoes to investigate their behavioural response to deltamethrin.

RESULTS

Forty generations of selection with deltamethrin resulted in only 3.8-fold resistance in the adults of Ae. aegypti. The adults of parent (PS) and selected strains (DAS) exhibited only 0.8-fold cross resistance to 4% DDT. The larvae emerging from the PS and DAS strains did not develop appreciable levels of resistance to various insecticides tested. The knockdown studies revealed KT50 of 14.4 min in PS adults with no signs of recovery even after 24 h. The DAS strains could develop only 1.2 to 1.3-fold knockdown resistance (KDR). The knockdown response of DDT was though 5-6 times slower than deltamethrin but the continued response in deltamethrin-selected adults caused only 1.2-fold KDR. The PS and DAS strains exhibited significant irritability response towards deltamethrin and DDT. The DAS strains showed 5-6 fold increased irritability to deltamethrin as compared to the PS strain.

CONCLUSIONS

The above results suggest the prolonged effective use of deltamethrin against Ae. aegypti as an adulticide.

摘要

目的

评估溴氰菊酯对野外采集的埃及伊蚊成蚊的作用。

方法

选择对 0.025%溴氰菊酯连续 40 代的成蚊。对选择的成蚊进行 4%滴滴涕测试，并对出现的幼虫进行各种杀虫剂测试，以研究交叉抗性谱。对成蚊进行击倒和激惹研究，以研究其对溴氰菊酯的行为反应。

结果

溴氰菊酯选择 40 代仅导致埃及伊蚊成蚊产生 3.8 倍抗性。亲代（PS）和选择株（DAS）的成蚊对 4%滴滴涕仅表现出 0.8 倍的交叉抗性。从 PS 和 DAS 株系中出现的幼虫对测试的各种杀虫剂没有产生明显的抗性水平。击倒研究显示 PS 成蚊的 KT50 为 14.4 分钟，即使在 24 小时后也没有恢复迹象。DAS 株系只能产生 1.2 到 1.3 倍的击倒抗性（KDR）。DDT 的击倒反应虽然比溴氰菊酯慢 5-6 倍，但在溴氰菊酯选择的成蚊中持续反应仅导致 1.2 倍的 KDR。PS 和 DAS 株系对溴氰菊酯和滴滴涕表现出显著的激惹反应。与 PS 株系相比，DAS 株系对溴氰菊酯的激惹性增加了 5-6 倍。