Effect of the primary host for production of both sexes on the mating interaction in an autoparasitoid species.

Dai P.; Liu L. Z.; Ruan C. C.Zang L. S.Wan F. H.

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Effect of the primary host for production of both sexes on the mating interaction in an autoparasitoid species.

机译：Effect of the primary host for production of both sexes on the mating interaction in an autoparasitoid species.

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摘要

Encarsia sophia (Girault and Dodd) is an autoparasitoid in the hymenopteran family Aphelinidae. The females develop as primary parasitoids on whitefly nymphs (primary hosts), whereas the males develop as hyperparasitoids on their own species or on other primary parasitoid species (secondary hosts). The autoparasitoids not only parasitise whiteflies but also kill them with strong host-feeding capacity. In this study, female and male E. sophia were reared on the primary hosts Trialeurodes vaporariorum and Bemisia tabaci 'Q', and the host-feeding and parasitism of wasps on both whitefly species were determined for the four possible different mating combinations: (i) E. sophia females reared on B. tabaci (ESF-BT) mated with E. sophia males from B. tabaci (ESM-BT), (ii) E. sophia females reared on T. vaporariorum (ESF-TV) mated with E. sophia males from T. vaporariorum (ESM-TV), (iii) ESF-BT mated with ESM-TV, and (iv) ESF-TV mated with ESM-BT. ESF-TV mated with ESM-TV killed the largest percentage of whitefly nymphs through host feeding. The ESF-TV with larger body size mating with larger ESM-TV killed more whitefly nymphs through host feeding than those mating with smaller ESM-BT. Whether B. tabaci or T. vaporariorum were used as hosts, ESF-TV mated with ESM-TV and ESM-BT and ESF-BT mated with ESM-BT significantly parasitised more whitefly nymphs than ESF-BT mated with ESM-TV. In general, ESF-BT mated with ESM-TV killed significantly fewer whitefly nymphs through parasitism and host feeding than the other three mating combinations on both whitefly species. These results indicated that the performance of autoparasitoids on insect pests was not only dependent on females but was also affected by mating with males from different primary host species.

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来源
《BioControl: Journal of the International Organization for Biological Control》 |2013年第3期|331-339|共9页
作者
Dai P.; Liu L. Z.; Ruan C. C.Zang L. S.Wan F. H.;
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作者单位

Engineering Research Center of Natural Enemy Insects, Institute of Biological Control, Jilin Agricultural University, Changchun, China;

Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China;

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原文格式 PDF
正文语种英语
中图分类生物防治;
关键词
Encarsia sophia; Bemisia tabaci; Trialeurodes vaporariorum; Autoparasitoid; Host feeding; Parasitism;

Effect of the primary host for production of both sexes on the mating interaction in an autoparasitoid species.

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