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Can the sex ratio of the spiralling whitefly (Aleurodicus dispersus) be described by local mate competition?

文献类型： 外文期刊

作者： Hu, Hao-Yuan 1 ; Zhu, Xiao-Li 2 ; Han, Dong-Yin 1 ; Niu, Li-Ming 1 ; Fu, Yue-Guan 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Minist Agr, Key Lab Monitoring & Control Trop Agr & Forest In, Danzhou 571737, Hainan, Peoples R China

2.Anhui Normal Univ, Coll Life Sci, Key Lab Biot Environm & Ecol Safety Anhui Prov, Wuhu, Anhui, Peoples R China

期刊名称：EVOLUTIONARY ECOLOGY RESEARCH （ 影响因子：1.094； 五年影响因子：1.137 ）

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收录情况： SCI

摘要： Background: Local mate competition theory predicts a female-biased sex ratio if one or a few hymenopteran foundresses, such as parasitoid wasps, oviposit in a local patch, and a less female-biased sex ratio as the number of foundresses increases. Although hemipterans, whiteflies are also haplodiploid insects, and the spatial structure of whitefly populations is similar to that of wasps. Question: Do whitefly sex ratios match the theoretical predictions of local mate competition? Organism: The spiralling whitefly, Aleurodicus dispersus Russell (Hemiptera: Aleyrodidae), a newly invasive, destructive pest on Hainan Island, China. Methods: We investigated the effects of the number of foundresses on the sex ratio of A. dispersus. Results: Offspring sex ratio was female-biased when only one foundress oviposited in a patch. Sex ratio increased with the number of foundresses. When only one foundress laid eggs in a patch, offspring sex ratio declined as the number of offspring increased. Male offspring emerged earlier than female offspring. Conclusion: Local mate competition predicted the trends in sex ratio of the spiralling whitefly.

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