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Behavioral mechanism of transfer and dispersal of Propylaea japonica in cotton adjacent to sorghum fields

文献类型： 外文期刊

作者： Cui, Hongying 1 ; Li, Lili 1 ; Song, Yingying 1 ; Guo, Wenxiu 1 ; Lv, Suhong 1 ; Yu, Yi 1 ; Men, Xingyuan 1 ;

作者机构： 1.Shandong Acad Agr Sci, Inst Plant Protect, Jinan, Peoples R China

关键词： adjacent managed; Propylaea japonica; feeding preference; oviposition preference; Aphis gossypii; Melanaphis sacchari

期刊名称：FRONTIERS IN SUSTAINABLE FOOD SYSTEMS （ 影响因子：4.7； 五年影响因子：5.4 ）

ISSN：

年卷期： 2023 年 7 卷

页码：

收录情况： SCI

摘要： Increasing crop biodiversity, such as by adjacent managed crops, is recognized as an effective biological control measure. However, few studies have focused on the mechanisms involved in how adjacent managed crops increase natural enemy populations, leading to reduced pest numbers. This study investigated the hypothesis that cotton grown adjacent to sorghum would positively influence the feeding and oviposition preferences of the ladybug Propylaea japonica, which predates cotton aphids, leading to enhanced pest control. The populations of Aphis gossypii were significantly lower and those of P. japonica were significantly higher in cotton grown adjacent to sorghum compared with monoculture cotton fields. Regardless of diet on which the larva of P. japonica were reared (Melanaphis sacchari, A. gossypii, and 50% M. sacchari + 50% A. gossypii), the adults always consumed significantly more M. sacchari compared with A. gossypii. P. japonica also showed significantly higher feeding and oviposition preferences for host plants bearing aphids to only host plants. P. japonica fed M. sacchari preferred to lay eggs on cotton, whereas those fed A. gossypii preferred to lay eggs on sorghum. These results suggest that the habitat of natural enemies can be expanded by influencing their feeding and oviposition preferences to achieve pest control in adjacent cropping systems. This research, which incorporates field and laboratory studies, suggests an approach for the successful conservation and biological control of cotton aphids using adjacent managed cotton and sorghum crops.

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