Global ETD Search
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Showing 1 to 6 of 6 for “"superparasitism"”.
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Genetic differentiation of the parasitoid, Cotesia congregata (Say), based on host-plant complex
… many individuals develop in a single host larva. Superparasitism, or repeated egg-laying events in the same host larva, is likely to occur in gregarious species. Brood size was not a good predictor of superparasitism in C. congregata, but within-brood male allele diversity indicates either …
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Patch exploitation and defence in the egg parasitoid Trissolcus basalis Wollaston (Hymenoptera : Scelionidae) / Scott A. Field.
… ecology, including the theories of adaptive superparasitism, sex ratio decisions, foraging behaviour and contest resolution.
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A probability problem arising out of an entomological experiment
… that the ovipositing female seemed to avoid superparasitism -- that is, laying eggs in already parasitized puparia. Naturally, if the number of non-parasitized insects still available was relatively small, the restraint exercised by the female tended to break down, and several eggs would be …
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The Dynamics of Natural Enemy Resistance in Aphid Populations
… strength of protection that could be overcome by superparasitism. Preliminary results suggest that this increases the potential for stable host coexistence. Using findings from the molecular characterisation of the pea aphid lines, future refinements to the mathematical model are proposed based on …
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Studies on Conura torvina (Hymenoptera: Chalcididae) Reproduction and biology in Relation to Hosts in Brassica Crops
… inefficient at host finding and oviposition. Superparasitism was common, but declined as the females gained oviposition experience. Experienced C. torvina produced an average of 8.25 progenies per day for a period of 12 days when provided with 13 P. xylostella hosts each day. Conura torvina …
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Aspects of the ecology of Scolypopa australis (Walker) (Homoptera:Ricaniidae) and its parasite Centrodora scolypopae (Valentine) (Hymenoptera: Aphelinidae)
… parasitised and nonparasitised host eggs, superparasitism was common in years of high percentage parasitism of host eggs. The progeny of the first oviposition is dominant and eliminates the younger individuals by physiological suppression. The low temperature threshold for S. australis egg …