A new mite IPM strategy: predator avoidance behaviour resulting from the synergetic effects of predator release and acaricide-treated nets.

A new mite IPM strategy: predator avoidance behaviour resulting from the synergetic effects of predator release and acaricide-treated nets.
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一种新的螨虫 IPM 策略：由于捕食者释放和经过杀螨剂处理的蚊帐的协同效应而产生的捕食者回避行为。

DOI：
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发表时间：
2018
期刊：
Pest Management Science
影响因子：
4.1
通讯作者：
T. Martin
T. Martin
中科院分区：
农林科学1区
文献类型：
--
作者：
M. Kungu;Emilie Delétré;S. Subramanian;K. Fiaboe;L. Gitonga;Z. Lagat;T. Martin

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背景 伊氏叶螨Tetranychus evansi和T.二斑叶螨是茄科的已知主要害虫。非洲的小农严重依赖农药处理。然而，农民声称，尽管高频率喷洒农药，但通常无效。因此，迫切需要新的管理解决方案。本研究评估了使用杀螨剂处理的蚊帐结合捕食螨释放控制叶螨的效果。 结果 结果表明，单独使用杀螨剂处理的蚊帐在减少T。urticae比T. evansi我们观察到相反的释放捕食螨Phytoseiulus longipes。这种差异可以用两种叶螨的扩散策略来解释。evansi是群居的，而T.荨麻疹迅速消散。联合应用两种技术产生了协同效应，减少了T。evansi和T.荨麻疹红蜘蛛的数量接近于零。这种协同效应可能是由于捕食性叶螨的回避行为，导致较高的猎物诱捕率和杀灭率的杀螨剂处理的网，而长足拟步行者蜘蛛螨卵喂养。 结论 这些技术对小农来说是有利可图的，因为它们不贵，而且避免了作物上的残留物。© 2018化学工业协会。
BACKGROUND Tetranychus evansi and T. urticae spider mites are known major pests of Solanaceae. Smallholders in Africa rely heavily on pesticide treatments. However, farmers claim that pesticides are generally ineffective despite high-frequency sprays. New management solutions are thus urgently needed. This study assessed the efficacy of using acaricide-treated nets combined with predatory mite release for controlling spider mites. RESULTS The results showed the acaricide-treated net alone was more effective at reducing numbers of T. urticae than T. evansi. We observed the opposite for release of the predatory mite Phytoseiulus longipes. This difference could be explained by the specific dispersion strategies of the two spider mite pests; T. evansi is gregarious, whereas T. urticae dispersed rapidly. Joint application of both techniques resulted in a synergetic effect that reduced T. evansi and T. urticae spider mite numbers close to zero. The synergetic effect could be explained by predator avoidance behaviour of the prey spider mites, resulting in higher prey trapping and killing rates on acaricide-treated nets, while P. longipes fed on spider mite eggs. CONCLUSION These techniques are profitable for smallholders as they are not expensive and avoid residues on the crop. © 2018 Society of Chemical Industry.