Additive and interactive effects of anthropogenic stressors on an insect herbivore

Additive and interactive effects of anthropogenic stressors on an insect herbivore
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人为应激源对食草昆虫的累加和交互作用

DOI:
10.1098/rspb.2022.2431
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发表时间:
2023
期刊:
Proceedings of the Royal Society B: Biological Sciences
影响因子:
--
通讯作者:
Forister, Matthew L.
Forister, Matthew L.
中科院分区:
--
文献类型:
--
作者:
Halsch, Christopher A.;Zullo, Dominic J.;Forister, Matthew L.

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全球变化对野生动植物的压力包括暴露于环境毒素、引进非本地物种和气候变化。相对较少的研究报告中,这三个主要类别的压力源已被同时检查,允许在实验环境中的协同效应的可能性。在这项研究中,我们暴露毛虫的梅丽莎蓝蝶(Lycaeides melissa)的三个浓度的氯虫苯甲酰胺,在三个实验气候下,在一个完全析因实验中的整个幼虫发育的本地或非本地宿主植物的饮食。我们发现,高农药暴露和非本地饮食对毛毛虫表现出强烈的负面影响,分别导致62%和42%的生存率下降,而相互作用的影响往往较弱,从15%到22%的生存率下降。在其他情况下,相互作用的影响已经被证明是强大的,但似乎并不普遍;然而,我们的研究表明,孤立(相加)的压力作用的累积效应是足够强大的严重减少生存和扩展人口在野外的持久性。
The pressures of global change acting on wild plants and animals include exposure to environmental toxins, the introduction of non-native species, and climate change. Relatively few studies have been reported in which these three main classes of stressors have been examined simultaneously, allowing for the possibility of synergistic effects in an experimental context. In this study, we exposed caterpillars of the Melissa blue butterfly (Lycaeides melissa) to three concentrations of chlorantraniliprole, under three experimental climates, on a diet of a native or a non-native host plant throughout larval development in a fully factorial experiment. We find that high pesticide exposure and a non-native diet exhibit strong negative effects on caterpillars, resulting in 62% and 42% reduction in survival, respectively, while interactive effects tend to be weaker, ranging from 15% to 22% reduction in survival. Interactive effects have been shown to be strong in other contexts, but do not appear to be universal; however, our study shows that the cumulative effects of stressors acting in isolation (additively) are sufficiently strong to severely reduce survival and by extension population persistence in the wild.
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DOI: --
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