Effects of Encarsia formosa (Hymenoptera: Aphelinidae) parasitism on the feeding preference and performance of the whitefly predator Serangium japonicum (Coleoptera: Coccinellidae)
文献类型： 外文期刊
作者： Li, Yi-Han 1 ; Fan, Ze-Yun 1 ; Zhu, Zhan-Peng 1 ; Lv, Xiao-Lu 1 ; Khan, Muhammad Musa 3 ; Sun, Jing-Chen 4 ; Qiu, Bao-Li 1 ;
作者机构： 1.South China Agr Univ, Engn Res Ctr Biol Control, Minist Educ, Guangzhou 510640, Peoples R China
2.Chongqing Normal Univ, Minist Educ, Engn Res Ctr Biotechnol Act Subst, Chongqing 401331, Peoples R China
3.Zhejiang Univ, Yazhou Bay Sci & Technol City, Hainan Inst, Sanya 572000, Peoples R China
4.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Guangzhou 510642, Peoples R China
关键词： Bemisia tabaci; Predator; Parasitoid; Intraguild predation; Biocontrol
期刊名称：CROP PROTECTION （ 影响因子：2.5； 五年影响因子：3.0 ）
ISSN： 0261-2194
年卷期： 2025 年 187 卷
页码：
收录情况： SCI
摘要： The relationship among the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae), its predator Serangium japonicum (Coleoptera: Coccinellidae), and its parasitoid Encarsia formosa (Hymenoptera: Aphelinidae) can be defined as intraguild predation (IGP). IGP represents an interaction that combines elements of both predation and competition between two species. In our previous study, predators (S. japonicum) often indirectly reduce the number of parasitoids (E. formosa) by consuming shared food resources, such as B. tabaci. To suppress whitefly outbreaks, a combination of parasitoids and predators is often released together using a mixed-species approach. However, the impact of the parasitic behavior of parasitoids on the feeding behavior of specific predators, such as S. japonicum, has not yet been well-studied. We conducted a laboratory study to examine how the parasitoid E. formosa affects the predation rates and performance of S. japonicum. Results indicate that S. japonicum shows a preference for non-parasitized whiteflies over parasitized ones, regardless of the availability of choices. Furthermore, we found a correlation between the preference for non-parasitized whiteflies and the duration of parasitization. As the developmental days of the parasitoid mummies increased, the food intake of the predatory group decreased significantly. Additionally, as the parasitoid mummy develops, S. japonicum spends more time exploring and probing the mummy before deciding whether to consume it. In summary, our study suggests that S. japonicum exhibits a significant preference for consuming non-parasitized whiteflies. Therefore, it is important to coordinate the release timing of S. japonicum and E. formosa in the biological control of B. tabaci.
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