INSA Lyon, CNRS, Ecole Centrale de Lyon, Université Claude Bernard Lyon 1, CPE Lyon, INL, UMR5270, Univ Lyon, 69621, Villeurbanne, France.
INSA Lyon, INRAE, BF2I, UMR 203, Univ Lyon, 69621, Villeurbanne, France.
Sci Rep. 2021 May 26;11(1):11068. doi: 10.1038/s41598-021-90782-7.
Aphids damage directly or indirectly cultures by feeding and spreading diseases, leading to huge economical losses. So far, only the use of pesticides can mitigate their impact, causing severe health and environmental issues. Hence, innovative eco-friendly and low-cost solutions must be promoted apart from chemical control. Here, we have investigated the use of laser radiation as a reliable solution. We have analyzed the lethal dose required to kill 90% of a population for two major pest aphid species (Acyrthosiphon pisum and Rhopalosiphum padi). We showed that irradiating insects at an early stage (one-day old nymph) is crucial to lower the lethal dose without affecting plant growth and health. The laser is mostly lethal, but it can also cause insect stunting and a reduction of survivors' fecundity. Nevertheless, we did not notice any significant visible effect on the offspring of the surviving irradiated generation. The estimated energy cost and the harmless effect of laser radiation on host plants show that this physics-based strategy can be a promising alternative to chemical pesticides.
蚜虫通过取食和传播疾病直接或间接地损害作物，导致巨大的经济损失。到目前为止，只能使用农药来减轻它们的影响，但这会导致严重的健康和环境问题。因此，除了化学控制之外，还必须推广创新的环保和低成本的解决方案。在这里，我们研究了激光辐射作为一种可靠的解决方案。我们分析了杀死两种主要害虫蚜虫（豌豆蚜和禾谷缢管蚜）90%种群所需的致死剂量。我们表明，在昆虫早期（一天龄的若虫）进行辐照对于降低致死剂量而不影响植物生长和健康至关重要。激光的杀伤力很强，但也会导致昆虫发育不良和存活后代繁殖力降低。然而，我们没有注意到对幸存的受辐照一代的后代有任何明显的可见影响。估计的能量成本和激光辐射对宿主植物的无害影响表明，这种基于物理的策略可能是化学农药的一种有前途的替代方案。
