Non-Reproductive Host Killing Caused by Aphelinus asychis (Hymenoptera: Aphelinidae), A Parasitoid of Cotton Aphid, Aphis gossypii (Homoptera: Aphididae)

Byeon Young Woong, 津田 みどり, 高木 正見, Kim Jeong Hwan, Kim Yong Heon

doi:10.5109/16118

Non-Reproductive Host Killing Caused by Aphelinus asychis (Hymenoptera: Aphelinidae), A Parasitoid of Cotton Aphid, Aphis gossypii (Homoptera: Aphididae)

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Byeon Young Woong

Laboratory of Insect Natural Enemies, Division of Biological Control, Department of Applied Genetics and Pest Management, Graduate School of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Kyushu University | Laboratory of Insect Natural Enemies, Applied Entomology Division, National Academy of Agricultural Science (NAAS)
津田みどり

九州大学生物資源環境科学府生物資源開発管理学専攻生物的防除学天敵昆虫学分野
高木正見

九州大学生物資源環境科学府生物資源開発管理学専攻生物的防除学天敵昆虫学分野
Kim Jeong Hwan

Laboratory of Insect Natural Enemies, Applied Entomology Division, National Academy of Agricultural Science (NAAS)
Kim Yong Heon

Laboratory of Insect Natural Enemies, Applied Entomology Division, National Academy of Agricultural Science (NAAS)

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Aphelinus asychis Walker (Hymenoptera: Aphelinidae) is a solitary endoparasitoid that parasitizes and host-feeds more than 40 aphid species, and has been considered a potential biological control agent of aphids. In many species of hymenopterous parasitoid, female wasps cause important additional mortality by non-reproductive killing (e.g., host-feeding and stinging behaviour). Host mortality caused by non-reproductive host killing of A. asychis was studied on cotton aphid, Aphis gossypii Glover (Homoptera: Aphididae) when infesting cucumber (Cucumis sativus L.), in the laboratory at 25°C and photoperiod of 16L: 8D. The females killed 3.3 aphids per day and 73.9 aphids until they died by host-feeding and stinging during an average of 21.3 days. Peak age-specific aphid mortality (5.2 aphids per day) was observed on the fifth day after parasitoid emergence. A. asychis females continued non-reproductive host killing until died.

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Journal of the Faculty of Agriculture, Kyushu University

Journal of the Faculty of Agriculture, Kyushu University 54 (2), 369-372, 2009-10-29

九州大学大学院農学研究院