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Heterodissemination: precision targeting container Aedes mosquitoes with a cohabiting midge species carrying insect growth regulator.
Pest Management Science ( IF 3.8 ) Pub Date : 2020-02-22 , DOI: 10.1002/ps.5749 Yi Wang 1 , Devi S Suman 1, 2 , Kshitij Chandel 1, 3 , Gregory M Williams 1, 4 , Isik Unlu 1 , Randy Gaugler 1
Pest Management Science ( IF 3.8 ) Pub Date : 2020-02-22 , DOI: 10.1002/ps.5749 Yi Wang 1 , Devi S Suman 1, 2 , Kshitij Chandel 1, 3 , Gregory M Williams 1, 4 , Isik Unlu 1 , Randy Gaugler 1
Affiliation
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BACKGROUND
Management of Aedes albopictus and Ae. aegypti is challenging in large part due to the cryptic nature of their larval habitats. Autodissemination, using conspecific species to transfer pesticide, is unable to provide proactive control. Here we report results from a new hypothesis, heterodissemination, wherein females of the cohabiting non-biting midge, Chironomus decorus, reared in the laboratory, treated with pyriproxyfen, and released to transfer lethal concentrations to shared mosquito larval habitats.
RESULTS
Pyriproxyfen-impregnated oil and powder formulations were developed. The average payload for each female midge treated with oil followed by powder formulations was 5.07 ± 0.92 μg of active ingredient or 1660 times the median lethal concentration (LC50 ) for Ae. albopictus or Ae. aegypti in 200 mL of water. Subsequent residue analysis showed pyriproxyfen transference from chironomids, treated with oil formulation only, into water-holding containers up to 2.06 ppb or 171.7 times the LC50 . Releasing 20 laboratory reared and contaminated Chironomus decorus into a small room resulted in 80.42 ± 0.67% and 75.67 ± 3.14% Ae. albopictus pupal mortality in open and cryptic sentinel ovicups, respectively. Container water volumes ranging up to 4 L did not affect efficacy. In a large field cage, 90.3 ± 2.5% Ae. albopictus mortality was resulted from releasing 100 treated female midges. Releasing 400 contaminated midges into a residential backyard resulted in 74.3% pupal mortality in sentinel ovicups.
CONCLUSIONS
Room, large field cage and field release trials demonstrated that adult midges reared and treated in the laboratory transfer highly lethal concentrations of pyriproxyfen to Ae. albopictus container habitats. Heterodissemination provides a potential approach for precision, proactive mosquito control, which may draw attention for further studies. © 2020 Society of Chemical Industry.
中文翻译：
异源扩散：精确定位容器的伊蚊，与携带昆虫生长调节剂的同居蚊种。
白纹伊蚊和Ae的背景管理。由于其幼虫栖息地的隐秘性质，埃及伊蚊具有很大的挑战性。使用特定物种转移农药的自动传播无法提供主动控制。在这里，我们报告了来自一个新假设的结果，即异种传播，其中同居的无咬mid蚊（Chironomus decorus）的雌性在实验室饲养，用吡ip昔芬处理，并释放以将致死浓度转移到共享的蚊虫幼虫栖息地中。结果开发了吡咯烷芬浸渍的油和粉剂。用油和粉末制剂处理的每只雌性中蚊的平均有效载荷为5.07±0.92μg活性成分，或Ae致死性浓度中值（LC50）的1660倍。白化病或Ae。在200毫升水中的埃及羚羊。随后的残留物分析表明，吡虫啉从仅用油剂处理过的Chironomids转移到保水容器中，最高可达2.06 ppb或LC50的171.7倍。将20个实验室饲养并污染的Chironomus装饰物放到一个小房间里，可产生80.42±0.67％和75.67±3.14％Ae。开放性和隐秘前哨维库组的白化病死亡率。容器水量不超过4 L不会影响功效。在大型野外笼中，Ae为90.3±2.5％。释放100只经治疗的雌性resulted虫导致白化病死亡率。将400个受污染的蚊子释放到住宅后院，可导致前哨ovicups的7死亡率达到74.3％。结论室 大型田间网箱和田间释放试验表明，在实验室饲养和处理的成年transfer将致死浓度高的吡ip昔芬转移至Ae。albopictus容器的栖息地。异源驱除技术为精确，主动地控制蚊子提供了一种潜在的方法，这可能会引起人们进一步研究的注意。©2020年化学工业协会。
更新日期：2020-02-22
中文翻译：
异源扩散：精确定位容器的伊蚊，与携带昆虫生长调节剂的同居蚊种。
白纹伊蚊和Ae的背景管理。由于其幼虫栖息地的隐秘性质，埃及伊蚊具有很大的挑战性。使用特定物种转移农药的自动传播无法提供主动控制。在这里，我们报告了来自一个新假设的结果，即异种传播，其中同居的无咬mid蚊（Chironomus decorus）的雌性在实验室饲养，用吡ip昔芬处理，并释放以将致死浓度转移到共享的蚊虫幼虫栖息地中。结果开发了吡咯烷芬浸渍的油和粉剂。用油和粉末制剂处理的每只雌性中蚊的平均有效载荷为5.07±0.92μg活性成分，或Ae致死性浓度中值（LC50）的1660倍。白化病或Ae。在200毫升水中的埃及羚羊。随后的残留物分析表明，吡虫啉从仅用油剂处理过的Chironomids转移到保水容器中，最高可达2.06 ppb或LC50的171.7倍。将20个实验室饲养并污染的Chironomus装饰物放到一个小房间里，可产生80.42±0.67％和75.67±3.14％Ae。开放性和隐秘前哨维库组的白化病死亡率。容器水量不超过4 L不会影响功效。在大型野外笼中，Ae为90.3±2.5％。释放100只经治疗的雌性resulted虫导致白化病死亡率。将400个受污染的蚊子释放到住宅后院，可导致前哨ovicups的7死亡率达到74.3％。结论室 大型田间网箱和田间释放试验表明，在实验室饲养和处理的成年transfer将致死浓度高的吡ip昔芬转移至Ae。albopictus容器的栖息地。异源驱除技术为精确，主动地控制蚊子提供了一种潜在的方法，这可能会引起人们进一步研究的注意。©2020年化学工业协会。
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