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Insecticide-mediated effects on mating success and reproductive output of Drosophila suzukii
Ecotoxicology ( IF 2.4 ) Pub Date : 2021-04-13 , DOI: 10.1007/s10646-021-02402-9
Alexandra P. Krüger , Tiago Scheunemann , Aline C. Padilha , Juliano B. Pazini , Daniel Bernardi , Anderson D. Grützmacher , Dori E. Nava , Flávio R. M. Garcia

Exposure to sublethal concentrations can have adverse effects on certain individuals, but, can also favor survival and reproduction of others. This study aimed to evaluate the effects of exposing Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae) adults to LC50 of spinetoram and lambda-cyhalothrin and field rate of thiamethoxam on their mating, reproductive output and longevity. The LC50 for lambda-cyhalothrin and for spinetoram were 7.83 and 32.91 ng a.i./cm2, respectively. Thiamethoxam, in the concentrations tested, was not toxic to D. suzukii, therefore, we use the recommended concentration for strawberry, 231.25 ng a.i./cm2, in the sublethal tests. Insects exposed to LC50 of lambda-cyhalothrin were more likely to mate, but presented shorter copula. Sublethal exposure to thiamethoxam lead to an increase in total fecundity. Among the insecticides tested, spinetoram presented the least expressive effects. Longevity was not affected by any of the tested insecticides. Results presented in this study are relevant to D. suzukii management since the stimulatory effects shown on this pest species can collaborate to outbreaks and insecticide resistance.



中文翻译:

杀虫剂介导的铃木果蝇的交配成功和繁殖产量的影响

暴露于亚致死浓度可能会对某些人产生不利影响,但也可能有利于其他人的生存和繁殖。这项研究旨在评估将果蝇Suzukii(Matsumura,1931)(Diptera:Drosophilidae)成虫暴露于Spinetoram和Lambda-cyhalothrin的LC 50以及噻虫嗪的田间施用率对其交配,生殖输出和寿命的影响。氟氯氰菊酯的LC 50和多杀菌素的LC 50分别为7.83和32.91 ng ai / cm 2。在所测试的浓度下,噻虫嗪对铃木D.suzukii无毒,因此,我们使用草莓的推荐浓度231.25 ng ai / cm 2。,在亚致死测试中。暴露于λ-氟氯氰菊酯的LC 50的昆虫更容易交配,但交配期较短。亚致死性暴露于噻虫嗪导致总生殖力增加。在测试的杀虫剂中,多杀菌素的表达效果最低。长寿不受任何测试的杀虫剂的影响。这项研究中提出的结果与铃木蝇的管理有关,因为对这种害虫物种显示出的刺激作用可以与暴发和杀虫剂抗药性协同发挥作用。

更新日期:2021-04-13
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