Results 281 to 290 of about 21,682 (308)

EVOLUTION AND MANIPULATION OF PARASITOID EGG LOAD

Evolution, 2009
In proovigenic parasitoids such as Leptopilina boulardi, the female emerges with a limited egg load and no further eggs are produced during its adult life. A female thus runs the risk of exhausting this limited supply of eggs before the end of her life.
Gandon, Sylvain, Varaldi, Julien, Fleury, Frédéric, Rivero, Ana   +3 more
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Egg Parasitoids in Legume Crops Ecosystem [PDF]

, 2013
In India, legume crops as targets for biocontrol include pigeon pea, chickpea, pea, black gram, groundnut, soybean and lucerne. The egg parasitoids occurring in or used for biocontrol in legume crop ecosystem in India are mainly Scelionids (Telenomus sp.) and Trichogrammatids (Trichogramma, 14 species; Trichogrammatoidea, 7 species), besides the ...
M. A. Khan, Siddharth Tiwari, Meena Agnihotri, Sunita T. Pandey   +3 more
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Egg Parasitoids in Cotton Ecosystem [PDF]

, 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
openaire   +1 more source

Genetics of the Behavioral Ecology of Egg Parasitoids [PDF]

, 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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Egg parasitoids of Australian Coreidae (Hemiptera)

Australian Journal of Entomology, 2001
AbstractTen microhymenopteran species are recorded as parasitoids of the eggs of coreid bugs in Australia: Chrysochalcissa olivacea Girault (Torymidae) from Amorbus biguttatus Stål and Pternistria bispina Stål; two species of Anastatus Motschulsky (Eupelmidae) from Mictis profana (F.), Amorbus alternatus Dallas, Amblypelta lutescens lutescens (Distant)
I. D. Naumann, Martin J. Steinbauer
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Insect egg deposition induces Pinus sylvestris to attract egg parasitoids [PDF]

Journal of Experimental Biology, 2002
SUMMARY Plant volatiles released in response to feeding insects are known to attract enemies of the feeding herbivores. In this study, egg deposition by a herbivorous insect was shown to induce a gymnosperm plant to emit volatiles that attract egg parasitoids.
Hilker, M., Kobs, C., Varama, M., Schrank, K.   +3 more
openaire   +2 more sources

Egg Parasitoids in Tobacco Ecosystem

2013
In tobacco ecosystem, the common lepidopteran targets for egg parasitoids include Spodoptera litura, Helicoverpa armigera and Scrobipalpa heliopa. For bio-suppression of S. litura, Trichogramma chilonis was found to be less effective than Telenomus remus. Among the different tobacco types (cultivars), those with higher number of glandular trichomes and
U. Sreedhar, S. Gunneswara Rao
openaire   +2 more sources

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.
Richard Stouthamer, James E. Russell
openaire   +2 more sources

Egg Parasitoids in Cereal Crops Ecosystem

2013
The major targets of egg parasitoids occurring in cereal crops include mainly stem borers (Scirpophaga, Chilo), leaf folders (Cnaphalocrocis), the gall midge and leaf/plant hopper. Among trichogrammatids commonly occurring in cereal ecosystem are the ‘minutum’ group (T. chilotraeae, T. pretiosum, T. chilonis) and the ‘japonicum’ group (T. japonicum, T.
A. P. Padmakumari, Gururaj Katti, I. C. Pasalu   +2 more
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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.
Véronique Martel, Guy Boivin
openaire   +3 more sources