W. J. Lewis
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View article: Volatile metabolites associated with one aflatoxigenic and one nontoxigenic <i>Aspergillus flavus </i>strain grown on two different substrates
Volatile metabolites associated with one aflatoxigenic and one nontoxigenic <i>Aspergillus flavus </i>strain grown on two different substrates Open
Aflatoxigenic and non-toxigenic Aspergillus flavus strains were grown on corn and on peanut substrates. Microbial volatile organic compounds (MVOCS) were collected by trapping headspace volatiles using thermal desorption tubes (TDT) packed…
View article: Olfactory Cues in Host Finding by <I>Melittobia digitata</I> (Hymenoptera: Eulophidae)
Olfactory Cues in Host Finding by <i>Melittobia digitata</i> (Hymenoptera: Eulophidae) Open
Chemical signals used by parasitoids to find hosts often originate from the host, its habitat, or both, providing critical cues for locating hosts that are often cryptic or highly dispersed. Melittobia Westwood are gregarious ectoparasitoi…
View article: Learning of host searching cues by the larval parasitoid <i>Microplitis croceipes</i>
Learning of host searching cues by the larval parasitoid <i>Microplitis croceipes</i> Open
We conducted laboratory experiments using a wind tunnel to determine the effects of prior experience on the learning and retention of learned responses in the larval parasitoid Microplitis croceipes (Cresson) (Hymenoptera: Braconidae). Alt…
View article: Examining plant-parasitoid interactions in tritrophic systems
Examining plant-parasitoid interactions in tritrophic systems Open
The demonstration that parasitoids are attracted to volatile compounds released by plants in response to herbivore feeding has generated a great deal of interest over the past ten years. The release of volatile signals by plants occurs not…
View article: Management of the Beet Armyworm (Lepidoptera: Noctuidae) in Cotton: Role of Natural Enemies
Management of the Beet Armyworm (Lepidoptera: Noctuidae) in Cotton: Role of Natural Enemies Open
The beet armyworm, Spodoptera exigua (Hubner), has recently become a persistent and explosive pest of cotton in the southeastern United States. It is, however, attacked by a large and diverse complex of beneficial arthropods and pathogens …
View article: Comparative Studies on Field Performance of Heliothis Larval Parasitoids Microplitis croceipes and Cardiochiles nigriceps at Varying Densities and under Selected Host Plant Conditions
Comparative Studies on Field Performance of Heliothis Larval Parasitoids Microplitis croceipes and Cardiochiles nigriceps at Varying Densities and under Selected Host Plant Conditions Open
Field performance of the Heliothis (Lepidoptera: Noctuidae) larval parasitoids Microplitis croceipes (Cresson) and Cardiochiles nigriceps (Viereck) (Hymenoptera: Braconidae) was assessed at various parasitoid densities and on different pla…
View article: Semiochemicals Influencing Fall Armyworm Parasitoid Behavior: Implications for Behavioral Manipulation
Semiochemicals Influencing Fall Armyworm Parasitoid Behavior: Implications for Behavioral Manipulation Open
The existence of semiochemicals that influence the host selection behavior of several fall armyworm (Spodoptera frugiperda (J. E. Smith)) parasitoids has been demonstrated. These semiochemicals are from several sources and influence the be…
View article: Employment of Parasitoids and Predators for Fall Armyworm Control
Employment of Parasitoids and Predators for Fall Armyworm Control Open
Although fall armyworm, Spodoptera frugiperda (J. E. Smith), has numerous natural enemies attacking it, the insect remains an important pest of many annual row crops and pasturage. Attempts to use natural enemies to control this pest must …