- Insect-Plant Interactions and Control
- Hemiptera Insect Studies
- Plant and animal studies
- Lepidoptera: Biology and Taxonomy
- Fish Ecology and Management Studies
- Freshwater macroinvertebrate diversity and ecology
- Insect behavior and control techniques
- Insect and Arachnid Ecology and Behavior
- Fossil Insects in Amber
- Entomological Studies and Ecology
- Insect and Pesticide Research
- Invertebrate Taxonomy and Ecology
- Aquatic Invertebrate Ecology and Behavior
- Insects and Parasite Interactions
- Coleoptera Taxonomy and Distribution
- Orthoptera Research and Taxonomy
- History and Developments in Astronomy
- Forest Insect Ecology and Management
- Parasite Biology and Host Interactions
- Insect Resistance and Genetics
- Insect Pheromone Research and Control
- Collembola Taxonomy and Ecology Studies
- Vector-Borne Animal Diseases
- Insect Pest Control Strategies
- Viral Infections and Vectors
National Park Service
2008-2024
Missouri State University
2006-2022
University of Missouri
2022
Office of the Secretary of Defense
2013
Invent (Germany)
2013
Texas Parks and Wildlife Department
1993-2008
United States Air Force
1989-2005
Northrop Grumman (Germany)
2001
Environment Agency
1999
Langley Research Center
1990-1993
1. This paper discusses the karst aquatic ecosystems of Edwards Plateau, Texas, including a synopsis those systems that are threatened or endangered by anthropogenic disturbances. Thousands springs issue from aquifers on largest in state. 2. The endemic and unique biota Plateau presented, taxa faced with extinction. Ninety-one species and/or sub-species identified as being to Plateau. 3. Threats overpumping associated an expanding human population region, agricultural practices, urbanization...
Non-native European hornet, Vespa crabro, is widely distributed in the United States east of Mississippi River. Occurrences V. crabro to west River are comparatively sparse. The majority documented specimens from "Trans-Mississippi" region U.S. primarily Ozarks Physiographic Province Arkansas, Missouri and eastern Oklahoma, with only sporadic reports solitary Arizona, California, Kansas, Louisiana, Wisconsin. This patchy geographic distribution southern southwestern suggests that may be...
Data are presented on the hiomagnification rates, accumulation and concentrations of metals in cetacean species. Concentrations predominantly occur soft tissues, although zinc lead concentrate skin bones. Rates uptake dependent upon metal availability, species' dietary preference chemical reactions between contaminants. Differences according to sex age animal, with certain displaying age-related trends. Mercury is only which shows both biomagnification at all levels food chain a positive...
The combined cardiovascular effects of hemorrhagic shock and mechanical brain injury were modeled in five groups pigs. Standard hypertonic saline resuscitation hypotension evaluated. Changes mean arterial pressure (MAP), heart rate (HR), central venous (CVP), intracranial (ICP), water measured. Brain (BI) was produced with a fluid percussion device that generated an extradural 3.5 × 105 N/m2 for 400 msec. Shock caused by bleeding to MAP 60 mm Hg minutes then resuscitated shed blood only or...
Although whole-genome sequencing (WGS) is the preferred genotyping method for most genomic analyses, limitations are often experienced when studying genomes characterized by a high percentage of repetitive elements, linkage, and recombination deserts. The Asian tiger mosquito (Aedes albopictus), example, has genome comprising up to 72% therefore we set out develop single-nucleotide polymorphism (SNP) chip be more cost-effective. Aedes albopictus an invasive species originating from Southeast...
The distributions of the two genera (Climacia and Sisyra) six species spongillaflies known to occur in Canada, Mexico United States are reviewed summarized. Several new significant distribution records presented for states or provinces these countries. Species diagnoses a revised, illustrated key third instar larvae adults all presented.
Water quality and benthic macroinvertebrate communities near the A. E. Wood Fish Hatchery effluent outfall in San Marcos River, Texas, were studied from October 1996 to July 1998. The upper River is a hydrologically stable, spring-fed system that provides habitat for several endemic endangered species. hatchery generally had little discernable effect on water at downstream locations, although total suspended solids chlorophyll-a levels elevated compared with upstream areas. Benthic...
Japanese burrowing cricket, Velarifictorus (Velarifictorus) micado (Saussure, 1877), was introduced into the eastern United States in 1959 and has since increased its distributional range to include Great Plains northern States. Although generally thought of as an urban species associated with human habitation, some specimens are now being captured more remote areas, which is attributed this sometimes macropterous dispersing through flight. Public data sources such BugGuide iNaturalist were...
We collected environmental and habitat data for nymphs of 12 dragonfly species (Odonata: Anisoptera) from 91 stream sites throughout eastern Texas, including urban non-urban locations. Understanding the relationship dragonflies to structure other variables is crucial purpose conserving these insects better using them as predictive tools water quality assessments, refining tolerance values. The objectives this study were determine key influencing diversity distribution in Texas streams,...
A micromechanics approach was utilized to investigate the thermally in duced stress fields developed fiber and matrix of continuous reinforced polymer composites at cold temperatures typical spacecraft operating tempera tures. Results from a finite element analysis periodic array fibers were com pared closed-form solution composite cylinder model for several fiber/matrix materials. The influence microstructural geometry, constituent properties, volume fraction investigated. results this...
Habitat characteristics and seasonal distribution of the riffle beetles Heterelmis comalensis Microcylloepus pusillus were studied at Comal Springs, Texas, during 1993-1994, to aid in developing sound recommendations for sustaining their natural populations. Springs consists four major spring outlets spring-runs. The spring-runs are dissimilar size, appearance, canopy riparian cover, substrate composition, aquatic macrophyte composition. conditions associated with respective populations...
We studied the life history and feeding habits of two coexisting closely related sister species Sialis (Sialis itasca Ross velata Ross) from a reservoir river in central Texas. Measurement larval head capsules emergence showed to have 10 instars, seasonal distribution immature adult stages synchronous, seasonal, univoltine histories with single cohort. Life dynamics were somewhat faster river, probably due higher temperatures during growth periods. Larvae exhibited more rapid development...
Indosialis bannaensis is reported from northern Thailand marking the first record of family, genus, and species this country. The female probable larva are described for time.