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Showing 1 to 20 of 98 for “"parasitoids"”.
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Toxin-like proteins in the venom of Drosophila parasitoids
… our recent findings that the venom of Drosophila parasitoids is rich in diverse toxin-like peptides and proteins that are homologous to venom toxins from a wide range of species, from spiders to snakes. Experimental validation of the predicted biochemical functions of these toxin-like proteins in …
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Trophic and Competitive Interactions among Egg Parasitoids of Stink Bugs
… A possibility of such a trap for native egg parasitoids (Hymenoptera: Scelionidae) exists with the introduction of the exotic brown marmorated stink bug, Halyomorpha halys (Hemiptera: Pentatomidae). The objective of this thesis is to enhance the understanding of Pentatomidae-Scelionidae …
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Community Structure of Parasitoids Attacking Leaf Galls of Belonocnema treatae on Quercus fusiformis
… and 4) determining the cumulative effect of parasitoids on B. treatae survivorship. The objectives were addressed using an exclosure study which limited access of parasitoids to leaf galls to a series of discrete 30 day window of opportunity. Following B. treatae oviposition (April) but …
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New insights for the Drosophila suzukii sustainable control: integrating parasitoids into current pest management strategies
Nell’attuale era della globalizzazione, gli artropodi fitofagi rappresentano una delle principali minacce per l’agricoltura e l’ambiente. Il moscerino dei piccoli frutti, Drosophila suzukii (Matsumura), è un importante esempio di insetto invasivo responsabile di ingenti perdite economiche a …
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The Effects of Insecticides on Squash Bug, its Egg Parasitoids and Pollinators in Virginia Cucurbit Production
… insecticides on the fate of the egg parasitoids, those developing in the host egg and emerged adults of G. pennsylvanicum. Contact assays showed that the insecticides λ-cyhalothrin and sulfoxaflor had caused high adult parasitoid mortality. As new insecticides get registered for use …
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Physiological Factors Determining Host Suitability of Lepidopteran Stemborers for Parasitization by Cotesia Flavipes-Complex Parasitoids (Braconidae: Hymenoptera)
… physiological host range of C. flavipes-complex parasitoids will likely be narrow, but exact host range will be difficult to predict. It is the hope that basic biological studies, such as those presented here, will help in the design of host range tests while also providing better understanding …
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Constraints on Neltumius arizonensis (Coleoptera: Bruchidae) as a biocontrol agent of prosopis in South Africa : the role of parasitoids
… in concealed places avoiding detection by parasitoids. 6. Egg parasitism is extremely high on N. arizonensis eggs (67%) and has resulted in failure by N. arizonensis to establish large populations and hence its effectiveness as a biocontrol agent is negligible.
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Host-Parasitoid Interactions of Two Invasive Drosophilids in Virginia Fruit Crops
1.) Sentinel traps were used to survey for parasitoids of frugivorous drosophilids in Virginia fruit cropping systems, and determine if parasitoids were attacking invasive flies Drosophila suzukii (Matsumura) and Zaprionus indianus Gupta (Diptera: Drosophilidae) in the field. Two parasitoids of …
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Influences of Climate, Competition, and Novel Hosts on Parasitoids of Emerald Ash Borer, and their Establishment in Virginia, and North Carolina
… focused on the potential for two larval parasitoids, S. agrili and S. galinae to parasitize emerald ash borer larvae in the novel host plant white fringe tree. We determined that both parasitoids are capable of finding and parasitizing emerald ash borer larvae within a non-ash host. …
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Effect of Beauveria bassiana (Balsamo) Vuillemin (Ascomycota: Hypocreales) on Diadegma semiclausum (Hellen) (Hymenoptera: Ichneumonidae), a parasitoid of Plutella xylostella (L.) (Lepidoptera: Yponomeutidae)
… and uninfected host larvae and the ability of parasitoids to disseminate fungal conidia among host larvae were investigated under laboratory conditions. The compatibility of B. bassiana with D. semiclausum for the management of P. xylostella larvae was studied under field cage conditions. Nine …
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Assessment of Parasitism of House Fly and Stable Fly Pupae (Diptera: Muscidae) by Pteromalid (Hymenoptera: Pteromalidae) Parasitoids Using Polymerase Chain Reaction (Pcr)
Three puparia collected in 1997 produced double bands prior to digestion of the PCR product by a restriction enzyme. The sizes of the bands corresponded to the sizes produced by amplification of the DNA of Muscidifurax and Spalangia species, possibly indicating hyperparasitism. Comparison of …
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Investigation into the effects of parasitoids on a gall midge Dasineura sp. (Cecidomyiidae), a biological control agent of Australian myrtle, Leptospermum laevigatum
Leptospermum laevigatum is one of the top five invading species in the fynbos biome and its biocontrol is of high conservation priority in the Western Cape. The first species used as a biocontrol agent was a leaf-mining moth Parectopa thalassias that became established and wide-spread. The second …
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Compatibility of biological and cultural control in dairy heifer group housing
… filth fly production and filth fly pupal parasitoids on dairies was conducted to asses where there was a lack of information. Second, a survey of filth fly species and their pupal parasitoids was conducted on six organic dairies in Wisconsin and Minnesota to determine where on dairies both …
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Habit Preferences and Fidelity in the Cotesia Flavipes Complex (Hymenoptera: Braconidae): Current Preferences and the Potential for Change Through Learning and Selection
… can help predict host ranges of insect parasitoids, and I present the results from tests of three congeneric braconid parasitoids in the Cotesia flavipes complex. These wasps parasitize stemboring larvae (Lepidoptera: Pyralidae & Noctuidae) in grasses and have been used as biological …
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Effects of Natural Enemies and Host Condition on Populations of Insect Pests of Trees
… reviewed the primary and secondary literature on parasitoids of the wood-boring larvae of cerambycid beetles to examine the relationship between the feeding niche of beetles and the number and types of parasitoids that attack them. Significantly fewer species of parasitoids attacked beetle larvae …
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Establishment of COTESA VESTALIS (HALIDAY) and DIADROMUS COLLARIS (GRAV.) parasitoids of the DIAMONDBACK MOTH, PLUTELLA XYLOSTELLA (L.), and assessment of the effectiveness of C. VESTALIS as a biological control agent in Zambia
… were to confirm establishment of two exotic parasitoids, Cotesia vestalis (Haliday) (Hymenoptera: Braconidae) and Diadromus collaris (Grav.) (Hymenoptera: Ichneumonidae), released in Lusaka Province, Zambia, during the 1970s and 1980s, to control the diamondback moth, Plutella xylostella (L.) …
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Seed-reducing Cecidomyiidae as potential biological control agents for invasive Australian wattles in South Africa, particularly Acacia mearnsii and A. cyclops
… gall-forming Cecidomyiidae specimens and their parasitoids from Australia and South Africa during this project produced a large and valuable assemblage of material, most of which will be or has been lodged with the National Insect Collection (Pretoria) (parasitoids) or the South Australian …
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From data to mathematical analysis and simulation in models in epidemiology and ecology
… caused severe production losses, based on native parasitoids of indigenous fruit flies. In the third part, we present a starting point to analyse raw data collected by Stacconi et al. in the province of Trento, Italy. We present an extensions of the model presented in Part 2 where we have two …
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Influence of cover crop management on Armyworm, Pseudaletia Unipuncta (Haworth) seasonal abundance, natural enemies, and yield in no-till corn, and diurnal abundance and spatial distribution of Armyworm
… by the mulch of mowed rye. Twelve species of parasitoids attacked armyworm. <i>Glyptapanteles 111ilitaris</i> (Walsh) (Hymenoptera: Braconidae) and <i>Periscepsia laevigata</i> (Wulp) (Diptera: Tachinidae) were the most abundant parasitoids. Seasonal parasitization rates ranged from 36-45%. …
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