Results 241 to 250 of about 20,857 (283)

Size-induced reproductive constraints in an egg parasitoid

Journal of Insect Physiology, 2012
The size of adult parasitoids is influenced by the quantity and quality of resources available during immature development. Gregarious development of endoparasitoids results in scramble competition where the resources are shared among individuals developing into the same host.
Guy, Boivin, Véronique, Martel
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Egg Parasitoids in Cotton Ecosystem

2013
The egg parasitoid fauna, especially trichogrammatid species, associated with the spotted bollworms (Earias vittella, E. insulana), pink bollworm (Pectinophora gossypiella) and American bollworm (Helicoverpa armigera), which are the key target pests in cotton ecosystem, are discussed. Inundative releases of two native species (Trichogramma chilonis and
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Sex Ratio Modulators of Egg Parasitoids

2009
The importance of sex ratio s in the biology and biocontrol application of egg parasitoids can be summarized as the cost of producing males. For both the biocontrol practitioner and the biocontrol agent a surplus of healthy fecund females is highly desirable.
James E. Russell, Richard Stouthamer
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Egg Parasitoids of Fruit Crop Pests

2013
Among the temperate fruit crops, there is a good scope for biocontrol of the codling moth with repeated release of Trichogramma embryophagum Htg., while the Indian gypsy moth is subjected to varying levels of natural parasitisation by Anastatus kashmirensis Mathur.
M. Mani, A. Krishnamoorthy, P. R. Gupta
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Antennal Structures Used in Communication by Egg Parasitoids

2009
Egg parasitoids are considered the most effective biocontrol agents of crop pests among parasitic wasps, since they are able to remove the herbivore from the agroecosystem before larval eclosion. The use of arthropod eggs as hosts by parasitoids has evolved in the Hymenoptera at least in 14 families.
ROMANI, Roberto, ISIDORO, Nunzio, BIN, Ferdinando   +2 more
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Biological control with egg parasitoids

1994
International ...
Wajnberg, Eric, Hassan, S.A.
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Host egg chorion structure influencing host suitability for the egg parasitoid Trichogramma Westwood

Journal of Insect Physiology, 1990
Abstract Success of development of the egg parasitoid Trichogramma Westwood (Hymenoptera, Trichogrammatidae) is higher in Mamestra brassicae (L.) (Noctuidae) than in Pieris brassicae (L.) (Pieridae), two lepidopterous host species that are common on cruciferous plants in Europe.
Pak, G.A., van Dalen, A., Kaashoek, N., Dijkman, H.   +3 more
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Nutritional Ecology of Insect Egg Parasitoids

2009
All animals require food and the food is the major issue that determines the biology of an organism. But there are a number of issues associated with the food that are involved. These include the location, confirmation, consumption, utilization and allocation of the resource (food) to the various aspects of the organism’s life style that determines the
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Genetics of the Behavioral Ecology of Egg Parasitoids

2009
Biological control with egg parasitoids has been mainly based on a trial-and-error approach and, as a result, its success rate has remained low. Several authors recently proposed that, on the other hand, a behavioral ecology approach of biological control, based on optimization theoretical models, can provide important means for improving the success ...
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Other Egg Parasitoids: Research for Utilisation

2013
Among the seven hymenopteran families (other than Trichogrammatidae), which are known to exploit the eggs of pest insects, Scelionidae and Mymaridae are entirely egg parasitoids, while Encyrtidae, Eulophidae, Eupelmidae, Platygasteridae and Tetracampidae include scattered genera and species, a few of which as immatures or adults act as egg predators ...
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