Transposition in patch: can induce aversive behavior?

عنوان دوره: اولین کنگره بین المللی حشره شناسی ایران

اصغر دهدار

Competition among foraging individuals occur for several types of resources including: food, mates, nesting sites and, in parasitoid wasp for hosts. They should therefore modify their resource exploitation decisions accordingly. Some factors such as food and electrical shocks have been studied as aversive stimuli during a learning process. This research investigated the role of transposition of arrival and intraspecific competition in patch in olfactory learning of related cues to hosts for a parasitoid wasp, Venturia canescens Gravenhorst (Hym.: Ichneumonidae). Our results showed that transposition of females affected olfactory learning type of conditioned female parasitoids. When female parasitoids were introduced to hosts asynchronously, the females that were introduced to the hosts first were attracted to the conditioned odor, showing associative learning, while other wasps introduced after a delay showed an aversive response to the same odor. In simultaneous condition all female parasitoids showed an aversion to the conditioned stimuli. Our results suggested that intraspecific competition plays as an aversive motivation for females to avoid stimuli related to competition and favor cues of new search arena and patches.
Keywords: Competition, aversive, olfactory, learning, intera-specific

Competition؛ aversive؛ olfactory؛ learning؛ inter-specific