Effects of elevated CO2 and spinetoram on the population fitness and detoxification enzymes activities in Frankliniella occidentalis and F. intonsa
Effects of elevated CO2 and spinetoram on the population fitness and detoxification enzymes activities in Frankliniella occidentalis and F. intonsa
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DOI：
10.1007/s10340-023-01689-3
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发表时间：
2023-09
影响因子：
4.8
通讯作者：
Zongfang Fan;Yaping Chen;Rui Fan;Bin Chen;Lei Qian;Furong Gui
中科院分区：
文献类型：
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作者：
Zongfang Fan;Yaping Chen;Rui Fan;Bin Chen;Lei Qian;Furong Gui
草食动物的表现可能会受到二氧化碳或杀虫剂浓度升高的影响。然而，关于入侵物种和本地物种如何受到这些双重压力的影响的数据不足。松材线虫是重要的经济害虫。在短期(第3代)和长期(第30代)两种胁迫下，我们评价了CO2浓度升高对蓟马对脊髓托拉姆敏感性的直接影响，记录了它们的种群适合度，并测定了成虫的乙酰胆碱酯酶(AChE)和细胞色素P450(CYP450)活性。高CO2浓度加速了蓟马对多菌灵的抗性，且表现出较强的抗多菌胺能力。西方人比伯夫。语调。在第3代，暴露在这两种胁迫下显著延长了成虫的寿命。西方鱼提高了繁殖力、性比和净繁殖率(R0)，而它们只增加了繁殖力。语调。值得注意的是，前者的性别比(2.15 ± )显著高于后者(0.65 ± 0.03)。另一方面，细胞色素P450活性信息。西方性显著低于对照组。在第30代，暴露于这两种胁迫降低了两个物种的种群适合度。此外，繁殖力、性比、R0、内禀增长率(R)和有限增长率(λ)都降低了。西方性显著高于非西方性。语调。此外，两个物种的AChE活性均显著低于对照。我们的结论是，CO_2浓度的增加和脊椎动物数量的增加可能会加速本地物种被入侵物种西洋参所取代。
Herbivore performance can be impacted by elevated CO2or insecticides. However, there is insufficient data on how invasive and native species are affected by these dual stresses.Frankliniella occidentalisandF. intonsaare economically important pests. We evaluated the direct effects of elevated CO2on the sensitivity of thrips to spinetoram, and recorded their population fitness, as well as measured acetylcholinesterase (AChE) and cytochrome P450 (CYP450) activities in adults under short-term (3rd generation) and long-term (30th generation) exposures to these two stresses. Thrips' resistance to spinetoram was accelerated by elevated CO2, and was strongly displayed byF. occidentalisthan byF. intonsa. In the 3rd generation, exposure to the two stresses significantly prolonged the longevity of adultF. occidentalisand increased its fecundity, sex ratio, and net reproductive rate (R0), whereas they only increased the fecundity ofF. intonsa. Notably, the sex ratio of the former (2.15 ± 0.35) was significantly higher than that of the latter (0.65 ± 0.03). On the other hand, CYP450 activity inF. occidentaliswas significantly lower than that of control. At the 30th generation, exposure to the two stresses reduced the population fitness of the two species. Additionally, the fecundity, sex ratio,R0, intrinsic rate of increase (r), and finite rate of increase (λ) ofF. occidentaliswere significantly higher than that ofF. intonsa. Besides, AChE activities in both species were significantly lower than that of the control. We concluded that increased CO2and spinetoram may hasten the displacement of the native species,F. intonsaby the invasive species,F. occidentalisin the future.