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From laboratory to the field: consistent effects of experience on host location by the fruit fly parasitoid Diachasmimorpha kraussii (Hymenoptera: Braconidae)

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Insect Science 2019年第5期26卷 863-872页

作者： Ayad Masry John P.Cunningham Anthony R.Clarke School of Earth Environmental and Biological SciencesQueensland University of Technology (QUT)BrisbaneQueenslandAustralia Agriculture Victoria Research AgilBioCentre for AgriBioscienceBundooraVictoriaAustralia

Associative learning is well documented in Hymenopteran parasitoids, where it is thought to be an adaptive mechanism for increasing successful host location in complex environments. Based on this learning capacity, it has been suggested that providing prerelease training to parasitoids reared for inundative release may lead to a subsequent increase in their efficacy as biological control agents. Using the fruit fly parasitoid Diachasmimorpha krausii we tested this hypothesis in a series of associative learning experiments which involved the parasitoid, two host fruits (tomatoes and nectarine), and one host fly (Bactrocera ttyoni). In sequential Y-tube olfactometer studies, large field-cage studies, and then open field studies, naive wasps showed a consistent preference for nectarines over tomatoes. The preference for nectarines was retained, but not significantly increased, for wasps which had prior training exposure to nectarines. However, and again consistently at all three spatial scales, prior experience on tomatoes led to significantly increased attraction to this fruit by tomato-trained wasps, including those liberated freely in the environment. These results, showing consistency of learning at multiple spatial scales, gives confidence to the many laboratory-based learning studies which are extrapolated to the field without testing. The experiment also provides direct experimental support for the proposed practice of enhancing the quality of inundatively released parasitoids through associative learning.

关键词： biological control inundative release learning mass rearing opiinae Tephritidae

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Female-borne cues affecting Psyttalia concolor （Hymenoptera： Braconidae） male behavior during courtship and mating

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Insect Science 2013年第3期20卷 379-384页

作者： Angelo Canale Giovanni Benelli Andrea Lucchi Department of Tree Science Entomology and Plant Pathology University of Pisa Pisa Italy

Knowledge of the mechanisms that regulate courtship and mating behavior in Psyttalia concolor （Sz6pligeti）-a koinobiont endophagous solitary parasitoid of the olive fruit fly, Bactrocera oleae （Rossi）, and of other fruit flies-is essential to its mass rearing and management, Augmentative releases ofP. concolor for olive fruit fly control started in the Mediterranean areas in the 1950s and still continue with limited success. We determined the influence of visual and chemical cues on courtship and mating behavior of this braconid and the possible effect of the mating status of males and females in the perception of these cues. Our results suggest that integration of visual and chemical stimuli are fundamental for mate location and courtship. Indeed, the optimal response of the male was achieved when physical and chemical cues were simultaneously presented and vision and olfaction worked synergistically.

关键词： Bactrocera oleae biological control Ceratitis capitata IPM opiinae sexual communication

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