Regulatory processes and population cyclicity in laboratory populations ofAnagasta kühniella (Zeller) (Lepidoptera: Phycitidae) IV. The sequential steps in the behavioral process of host finding and parasitization by the entomophagous parasite,Venturia canescens (Gravenhorst) (Hymenoptera: Ichneumonidae)
Tóm tắt
The sequential steps in the behavioral process of a California stock of the entomophagous parasite,Venturia canescens (Grav.), parasitizingAnagasta kühniella (Zeller) was studied. In host-habitat finding, food media infested with hosts were very attractive to the parasites. Host finding was not covered in detail in this paper as it is presented in subsequent papers. Briefly, in all experiments host density was the most influential factor affecting the efficiency of the parasite. When three age stages of the host were exposed to a parasite, all tests showed that the large, last instar larvae was the preferred age stage but it was not the most suitable (when parasitized) for successful parasite development. Small larvae were less preferred but more suitable for parasite development when accepted.
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