Matheus Rakes, Maíra Chagas Morais, Leandro do Prado Ribeiro, Gabriel Rodrigues Palma, Rafael de Andrade Moral, Daniel Bernardi, Anderson Dionei Grützmacher
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On the other hand, methoxyfenozide + spinetoram caused average mortalities of 88.75% at 15 °C, 38.75% at 25 and 30 °C. The mortality caused by chlorfenapyr was increased by 70% with increasing temperature. Surviving adults in lethal toxicity bioassay did not show differences in egg parasitism of F<sub>0</sub> generation and emergence of F<sub>1</sub> generation at 15, 25 and 30 °C; however, the insecticide formulation based on methoxyfenozide + spinetoram showed the lowest level of parasitism and emergence. Our results demonstrated significant changes in the sex ratio as the temperature increased, but no differences were observed when compared with the insecticides tested. A significant interaction between insecticides and temperatures was discovered by contaminating the host’s parasitized eggs, corresponding to the pupal stage of <i>T. podisi</i>. Generally, the highest emergence reduction values were found at 30 °C. Our results highlighted the temperature-dependent impact of synthetic insecticides on parasitoids, which should be considered in toxicological risk assessments, under integrated pest management and climate change scenarios.</p>","PeriodicalId":12580,"journal":{"name":"Gesunde Pflanzen","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Temperature-altering Effects of Synthetic Insecticides On the Parasitoid Wasp Telenomus Podisi for the Biocontrol of Pentatomids in Soybean Crops\",\"authors\":\"Matheus Rakes, Maíra Chagas Morais, Leandro do Prado Ribeiro, Gabriel Rodrigues Palma, Rafael de Andrade Moral, Daniel Bernardi, Anderson Dionei Grützmacher\",\"doi\":\"10.1007/s10343-024-01020-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The impact of climate change has led to growing global concern about the interaction of temperature and xenobiotics in agricultural toxicological studies. 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引用次数: 0
摘要
气候变化的影响导致全球日益关注农业毒理学研究中温度与异种生物的相互作用。因此,研究人员首先评估了在三种温度水平下,用于治理大豆作物中蝽象复合体的六种杀虫剂制剂对寄生虫 Telenomus podisi Ashmead 不同生命阶段的致死、亚致死和跨代影响。当 F0 代 Telenomus podisi 成虫接触杀虫剂(包括乙酰甲胺磷、旋覆花、噻虫嗪+氰戊菊酯)时,在 15、25 和 30 °C 下的累积死亡率为 100%。另一方面,甲氧虫嗪+辛硫磷在 15 °C、25 °C和 30 °C时的平均死亡率分别为 88.75%、38.75%和 38.75%。随着温度的升高,虫螨腈造成的死亡率增加了 70%。在致死毒性生物测定中,存活的成虫在 15、25 和 30 ° C 下的 F0 代卵寄生率和 F1 代出苗率没有差异;但是,甲氧虫腈+辛硫磷杀虫剂制剂的寄生率和出苗率最低。我们的结果表明,随着温度的升高,性比发生了显著变化,但与所测试的杀虫剂相比,没有观察到差异。通过污染寄主的寄生卵(相当于 T. podisi 的蛹期),发现杀虫剂与温度之间存在明显的相互作用。一般来说,30 °C时的出苗率降低值最高。我们的研究结果突显了合成杀虫剂对寄生虫的影响与温度有关,在害虫综合治理和气候变化情况下进行毒理学风险评估时应考虑到这一点。
Temperature-altering Effects of Synthetic Insecticides On the Parasitoid Wasp Telenomus Podisi for the Biocontrol of Pentatomids in Soybean Crops
The impact of climate change has led to growing global concern about the interaction of temperature and xenobiotics in agricultural toxicological studies. Thus, lethal, sublethal and transgenerational effects of six insecticide formulations used in the management of the stink bug complex in soybean crops were evaluated firstly on different life stages of the parasitoid Telenomus podisi Ashmead at three levels of temperature. Telenomus podisi adults in F0 generation, when exposed to insecticides including acephate, spinosad and thiamethoxam + lambda-cyhalothrin, showed accumulated mortality of 100% at 15, 25 and 30 °C. On the other hand, methoxyfenozide + spinetoram caused average mortalities of 88.75% at 15 °C, 38.75% at 25 and 30 °C. The mortality caused by chlorfenapyr was increased by 70% with increasing temperature. Surviving adults in lethal toxicity bioassay did not show differences in egg parasitism of F0 generation and emergence of F1 generation at 15, 25 and 30 °C; however, the insecticide formulation based on methoxyfenozide + spinetoram showed the lowest level of parasitism and emergence. Our results demonstrated significant changes in the sex ratio as the temperature increased, but no differences were observed when compared with the insecticides tested. A significant interaction between insecticides and temperatures was discovered by contaminating the host’s parasitized eggs, corresponding to the pupal stage of T. podisi. Generally, the highest emergence reduction values were found at 30 °C. Our results highlighted the temperature-dependent impact of synthetic insecticides on parasitoids, which should be considered in toxicological risk assessments, under integrated pest management and climate change scenarios.
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