alexa Host Approaching Behavior in a Parasitoid Wasp (Hymenop
ISSN: 2161-0983

Entomology, Ornithology & Herpetology: Current Research
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Short Communication

Host Approaching Behavior in a Parasitoid Wasp (Hymenoptera: Ichneumonidae) as Influenced by Physiological State and Host Type

Kanako Ueno and Takatoshi Ueno*

Institute of Biological Control, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan

*Corresponding Author:
Takatoshi Ueno
Institute of Biological Control
Faculty of Agriculture, Kyushu University
Fukuoka 812-8581, Japan
Tel: +81 92-642-3036
Email: [email protected]

Received date: August 01, 2015; Accepted date: August 18, 2015; Published date:August 20, 2015

Citation: Ueno K, Ueno T (2015) Host Approaching Behavior in a Parasitoid Wasp (Hymenoptera: Ichneumonidae) as Influenced by Physiological State and Host Type. Entomol Ornithol Herpetol 4:159. doi: 10.4172/2161-0983.1000159

Copyright: © 2015 Ueno K, Ueno T. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



The present study highlighted the interactions of host type and physiological state (i.e., the number of mature eggs a female carries) in determining a parasitoid’s host-finding behavior, using the solitary endoparasitoid Itoplectis naranyae (Hymenoptera: Ichneumonidae). Females took much shorter time to approach and attack healthy hosts of high-value than empty hosts of no-value, discriminating between the host types from a short distance. Variance of the time was much greater for empty hosts. A striking difference was detected in the influence of physiological state on wasp behavior; females with greater egg loads approached an empty host more quickly in order to examine its suitability for oviposition whereas egg load effects were not found for healthy hosts. Thus, egg load was involved in variation of the host-finding behavior but its effects depended on host types. We discuss the adaptive significance of the context dependent effects of egg load on parasitoid behavior


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