Factors Influencing Host Discrimination in a Pupal Parasitoid, Brachymeria lasus (Walker)(Hymenoptera : Chalcididae)

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概要

• 論文の詳細を見る

• Brachymeria lasus showed various responses to host (Mythimna separata) pupae with different treatments. In choice tests, when females were exposed to parasitized and unparasitized hosts, the mounting frequency to both hosts was not significantly different. However, they attacked (oviposited) the unparasitized hosts more frequently than the parasitized hosts. Female B. lasus discriminated between parasitized and unparasitized hosts when the oviposition for the parasitized hosts occurred at least one day earlier for both self and conspecific discrimination. In choices between unparasitized and physically-killed (by freezing or microwave) hosts, the females attacked the unparasitized hosts more frequently than the physically-killed hosts. However, when the females were given a choice between unparasitized and anesthetized hosts, they did not discriminate between the hosts. On the other hand, female B. lasus showed a higher response to pupal extracts of unparasitized than parasitized or freeze-killed hosts. These results suggest that host associated chemical (s) are important factors in discriminating between parasitized and unparasitized hosts by B. lasus.

• 日本昆虫学会の論文
• 2000-09-25

著者

• HONDA Hiroshi

  Institute of Advanced Material Study, Kyushu University

• Honda H

  Univ. Tsukuba Ibaraki Jpn

• KAINOH Yooichi

  Institute of Agriculture and Forestry, University of Tsukuba

• Kainoh Y

  Institute Of Agriculture And Forestry University Of Tsukuba

• Kainoh Yooichi

  Institute Of Agriculture And Forestry University Of Tsukuba

• Honda Hiroshi

  Institnte Of Agriculture And Forestry University Of Tsukuba

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