Using a Two-Sex Life Table Tool to Calculate the Fitness of Orius strigicollis as a Predator of Pectinophora gossypiella

文献类型： 外文期刊

第一作者： Ali, Shahzaib

作者： Ali, Shahzaib;Li, Sizhe;Zhou, Xingmiao;Jaleel, Waqar;Jaleel, Waqar;Jaleel, Waqar;Jaleel, Waqar;Khan, Muhammad Musa;Wang, Jintao

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关键词： age-stage; feeding potential; Orius strigicollis Poppius; Pectinophora gossypiella; population parameters; selection pressure; two-sex life table

期刊名称：INSECTS （ 影响因子：2.769； 五年影响因子：3.046 ）

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年卷期： 2020 年 11 卷 5 期

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收录情况： SCI

摘要： A two-sex life table is a useful tool for studying the fitness of predators. Previous studies of Orius strigicollis Poppius (Heteroptera: Anthocoridae) fitness have not been done on Pectinophora gossypiella (Lepidoptera: Gelechiidae) using a two-sex life table tool. This study reports the fitness of the minute predatory flower bug, O. strigicollis when feeding on the cotton pest P. gossypiella using a two-sex life table tool. Different densities (5, 10, and 15 eggs) of P. gossypiella eggs were used to calculate the feeding capacity and fitness of O. strigicollis in the laboratory at 28 degrees C +/- 1, 75 +/- 5% RH and 16:8 (L:D). The results concluded that O. strigicollis is an efficient predator of P. gossypiella. The maximum growth capacity of the predatory bug O. strigicollis was attained when it was fed on 10 and 15 P. gossypiella eggs. Furthermore, shorter generation and development time were also observed in the case of 15 eggs of P. gossypiella. These results suggest that O. strigicollis has considerable predatory potential and prefers feeding on P. gossypiella eggs than on the first instar larvae at the fourth instar or the female stage. Although the field potential of O. strigicollis is still unknown, this study will support future investigations in terms of field applications.

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