A5109925672- Insect and Arachnid Ecology and Behavior
- Insect and Pesticide Research
- Plant and animal studies
- Insect Pest Control Strategies
- Neurobiology and Insect Physiology Research
- Insect Utilization and Effects
- Insect-Plant Interactions and Control
- Insect Resistance and Genetics
- Geometric Analysis and Curvature Flows
- Point processes and geometric inequalities
- Invertebrate Immune Response Mechanisms
- Insect Pheromone Research and Control
- Insect behavior and control techniques
- Forest Insect Ecology and Management
- Fish Ecology and Management Studies
- Mosquito-borne diseases and control
- Geometric and Algebraic Topology
- Animal Behavior and Reproduction
- Aquatic Invertebrate Ecology and Behavior
- Geometry and complex manifolds
- Synthetic Organic Chemistry Methods
- Hemiptera Insect Studies
- Advanced Synthetic Organic Chemistry
- Mathematical Dynamics and Fractals
- Beetle Biology and Toxicology Studies
University of Memphis
2024
University of South Carolina
1986-2023
Texas State University
2010
Agricultural Research Service
1985-2005
Center for Grain and Animal Health Research
1993-2004
Eötvös Loránd University
2001
United States Department of Agriculture
1978-1996
University of Nebraska–Lincoln
1991-1992
Peru State College
1991
Entomological Society of America
1990
With a growing world population and increasingly demanding consumers, the production of sufficient protein from livestock, poultry, fish represents serious challenge for future. Approximately 1,900 insect species are eaten worldwide, mainly in ...Read More
Journal Article Insect Chemical Ecology: an Evolutionary Approach Get access An ApproachRoitberg B. D. Isman M. [eds.] Routledge, Chapman & Hall, New York, 1992 359 pp., $35.00 ISBN 0-412-01881-0 Ralph W. Howard USDA-ARS Manhattan, KS. Search for other works by this author on: Oxford Academic Google Scholar Annals of the Entomological Society America, Volume 86, Issue 4, 1 July 1993, Pages 507–508, https://doi.org/10.1093/aesa/86.4.507 Published: 01 1993
Inhibition of eicosanoid formation in larvae the tobacco hornworm Manduca sexta, using specific inhibitors phospholipase A2, cyclooxygenase, and lipoxygenase, severely weakened ability to clear bacterium Serratia marscescens from their hemolymph. The reduced capability remove bacteria is associated with increased mortality due these bacteria. There a dose-dependent relationship between A2 inhibitor dexamethasone both bacterial clearance larval mortality. effects on survival were reversed by...
The staphylinid beetle Trichopsenius frosti Seevers has the same cuticular hydrocarbons as those of its host termite Reticulitermes flavipes (Kollar) and it biosynthesizes them. These probably serve primary mechanism by which integrates itself into colony.
This research tested the suppressive ability of Beauveria bassiana (Balsamo) Vuillemin alone and in combination with diatomaceous earth against red flour beetle, Tribolium castaneum (Herbst). Adults did not show a dose response to B. bassiana, addition (DE) result significant increase mortality. Against larvae, however, DE at 190 mg/kg grain enhanced efficacy all concentrations ranging from 33 2,700 mg conidia per kilogram grain. The presence resulted 17- 16-fold decreases median lethal...
A census of 24 1-ha plots indicated an average abundance per ha 4.42 colonies Reticulitermes flavipes (Kollar) and 2.38 R. virginicus (Banks). Nearest neighbor analysis the mean distance between to be 22.48 m, 26.19 colonies, irrespective species, 16.80 m. Six were selected by a ranked-set sampling method, colony size was estimated 244,445 termites.
Cuticular hydrocarbons have been identified from worker and immature forms of the carpenter ant, Camponotus modoc Wheeler, larval adult syrphid, Microdon piperi Knab. The stages flies are highly integrated myrmecophiles, despite their also being obligate predators ant brood. Both ants contain same hydrocarbon components, but in stage-specific proportions. M. larvae possess cuticular components identical to those host ants, no other discernible components. percentage composition closely...
When seasonal variation of caste proportions was quantified in "nests" the subterranean termite Reticulitermes flavipes (Kollar), workers comprised most abundant caste, with a 2-year average 84.0% individuals. Larvae 8.7%, nymphs 5.0%, adult soldiers 2.1%, and presoldiers neotenic reproductives 0.1% each. Alates eggs were found infrequently. Caste changed significantly season, apparently varying according to reproductive cycle. are summer least winter. Soldiers immediately preceding alate...
SYNOPSIS. Prostaglandins and related eicosanoids are oxygenated metabolites of C20 polyunsaturated fatty acids. These compounds have been detected in species representing all major animal phyla. The significance lies two broad areas biology. In one, involved regulation many cellular events. the other, facilitate certain ecological interactions. Eicosanoids known best narrow context their clinical signif-icance human medicine. this essay we suggest a new, broader paradigm for understanding...
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