Autodissemination of insecticides applied to agricultural pests: Spodoptera frugiperda's role in generating toxicity on its offspring

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-04-09 DOI:10.1016/j.cropro.2025.107238

Emilia Martínez , María Begoña Riquelme Virgala , María Antonela Dettler , Florencia Anabella Vazquez , Rolando Caraballo , Eduardo Guzmán , Alejandro Lucia

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Abstract

This work examined whether Spodoptera frugiperda adults can pick up pyriproxyfen from an insecticide-treated surface and transfer it to their egg masses through autodissemination, inducing toxicity in newly hatched larvae upon ingestion. We also assessed pyriproxyfen distribution on egg masses during oviposition and its transfer from males to virgin females during mating. The lethal and sublethal toxicity of pyriproxyfen was evaluated through two bioassays: one on autodissemination (transfer to egg masses) and another simulating the effect of transferred doses to the egg masses. Pyriproxyfen amounts in adults and egg masses were analyzed using gas chromatography-mass spectrometry (GC-MS). Gravid females picked up the most pyriproxyfen (9.45 μg/insect), followed by males (7.67 μg/insect) and virgin females (3.30 μg/insect). Besides, gravid females transferred an average 2.61 ng/egg to their egg masses. In the autodissemination bioassay, larval emergence, pupation and adult emergence were reduced, while larval development was delayed. These findings were confirmed by the toxicity assay simulating the transferred doses. We also observed pyriproxyfen transfer from males to virgin females during mating. The results suggest that Spodoptera frugiperda gravid females can transfer pyriproxyfen to egg masses, causing toxicity in larvae, highlighting the potential of autodissemination as an alternative or complementary pest control method.

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农业害虫杀虫剂的自传播：狐尾蛾对其后代产生毒性的作用

本研究研究了夜蛾成虫是否可以从杀虫剂处理过的表面获取吡丙醚，并通过自身传播将其转移到卵群中，从而在新孵化的幼虫摄入后引起毒性。我们还评估了吡丙醚在产卵期间在卵团中的分布以及交配期间从雄性到处女雌性的转移。通过两种生物测定法对吡丙醚的致死和亚致死毒性进行了评价：一种是对自身传播（转移到虫卵中），另一种是模拟转移剂量对虫卵的影响。采用气相色谱-质谱联用技术（GC-MS）分析了成虫和虫卵中吡丙醚的含量。妊娠期雌鼠对吡丙醚的吸收率最高（9.45 μg/虫），其次是雄性（7.67 μg/虫）和处女期雌鼠（3.30 μg/虫）。此外，怀孕的雌性平均每枚卵向卵细胞转移2.61 ng。在自传播生物测定中，幼虫羽化、化蛹和成虫羽化减少，幼虫发育延迟。模拟转移剂量的毒性试验证实了这些发现。我们还观察到吡丙醚在交配期间从雄性转移到处女雌性。结果表明，姬夜蛾妊娠雌虫可以将吡丙醚转移到卵块中，对幼虫产生毒性，提示其可作为一种替代或补充的害虫防治方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.