Field evaluation of an insect growth regulator, pyriproxyfen 0.5% GR against Culex quinquefasciatus, the vector of Bancroftian filariasis in Pondicherry, India
Field evaluation of an insect growth regulator, pyriproxyfen 0.5% GR against Culex quinquefasciatus, the vector of Bancroftian filariasis in Pondicherry, India
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DOI：
10.1016/j.actatropica.2008.04.005
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发表时间：
2008-07-01
期刊：
影响因子：
2.7
通讯作者：
Zaim, M.
中科院分区：
文献类型：
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作者：
Jambulingam, P.;Sadanandane, C.;Zaim, M.
在废弃威尔斯井、粪坑和排水沟中进行了0.5%吡丙醚颗粒剂（GR）0.1、0.25和0.5 kg（ai）/ha对致倦库蚊幼虫和蛹的田间药效试验。IGR被认为是有效的，对C quinquefasciatus幼虫和蛹在所有的幼虫栖息地测试。在水流缓慢的排水沟中，0.5%吡丙醚颗粒剂以0.5 kg（ai）/ha施用4周，对成虫的羽化抑制率（EI）>80%。在0.1和0.25 kg（ai）/ha时，El总是小于80%。在积水沟中，IGR在0.1 kg（ai）/ha的1周时间内产生>80%的El。在0.25和0.5千克（有效成分）/公顷时，效力高5-10倍。在粪坑中，0.5%吡丙醚颗粒剂以0.1 kg（ai）/ha施用6周，0.25 kg（ai）/ha施用11周，0.5 kg（ai）/ha施用9周，El>80%。在以0.1 kg（ai）/ha剂量处理的废弃威尔斯井中，15周内有>80%的E1，在0.25和0.5 kg（ai）/ha剂量下，有效持续时间约为1.6-1.8倍（24-28周）。考虑到所需IGR的量和成本以及安全原因，推荐将0.1 kg（有效成分）/ha的低剂量作为田间剂量，在积水沟中每周施用一次，在污水坑中每6周施用一次，在废弃威尔斯中每15周施用一次。由于0.5%吡丙醚颗粒剂的残留效应比其他IGR相对较长，因此可以最大限度地降低操作成本。0.5%吡丙醚颗粒剂可作为媒介生物综合防治方案中化学防治策略的选择之一。(C)2008 Elsevier B. V.保留所有权利。
Pyriproxyfen, 0.5% granular formulation (GR), an insect growth regulator (ICR) was tested against Culex quinquefasciatus larvae and pupae in disused wells, cesspits and drains at the dosages of 0.1, 0.25, and 0.5 kg(ai)/ha to determine the most appropriate field dosage. The IGR was found to be effective against C quinquefasciatus larvae and pupae in all the larval habitats tested. In drains with slow moving water, application of pyriproxyfen 0.5% GR at 0.5 kg(ai)/ha resulted in >80% emergence inhibition (EI) of adults for 4 weeks. At 0.1 and 0.25 kg(ai)/ha, the El was always less than 80%. In stagnant drains, the IGR yielded >80% El for 1-week period at 0.1 kg(ai)/ha. At 0.25 and 0.5 kg(ai)/ha, the efficacy was 5-10 times higher. In cesspits, the El was >80% for 6 weeks when pyriproxyfen 0.5% GR was applied at 0.1 kg(ai)/ha, for 11 weeks at 0.25 kg(ai)/ha and 9 weeks at 0.5 kg(ai)/ha. In disused wells treated at the dosage 0.1 kg(ai)/ha, there was >80% El for 15 weeks and at 0.25 and 0.5 kg(ai)/ha, the effective duration was about 1.6-1.8 times longer (24-28 weeks). Considering the quantum of IGR required and the cost and also for safety reasons, the low dosage 0.1 kg(ai)/ha is recommended as the field dosage to be applied at weekly interval in stagnant drains, 6 weeks interval in cesspits and 15 weeks interval in disused wells. Since pyriproxyfen 0.5% GR has a relatively longer residual effect than the other IGRs the operational cost could be minimized. Pyriproxyfen 0.5% GR could be one of the choices in the chemical control strategy in Integrated Vector Control Programmes. (C) 2008 Elsevier B.V. All rights reserved.