R. Pfannenstiel

Publications62
h-index18
Citations1,033
Highly Influential Citations53
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Spider predators of lepidopteran eggs in south Texas field crops
Identification and Diel Activity Patterns of Predators Attacking Helicoverpa zea (Lepidoptera: Noctuidae) Eggs in Soybean and Sweet Corn
TLDR
The complex of predators feeding on lepidopteran eggs [Helicoverpa zea (Boddie)] and the key predators discovered in this study were different in each crop and the period of peak egg predation did also.
Resistance Mechanisms of Sugarcane to Mexican Rice Borer (Lepidoptera: Pyralidae)
TLDR
Larval antibiosis and adult and larval nonpreference studies were compared with field screening studies to determine the sugarcane characters and mechanisms that may confer resistance against the Mexican rice borer, Eoreuma loftini (Dyar), and laboratory experiments indicated that differences in larval establishment could be an important resistance character.
Sampling Eoreuma loftini (Lepidoptera: Pyralidae) on Texas Sugarcane
TLDR
Sugarcane fields of different types were sampled for 3 yr to determine the seasonal density, spatial dispersion, and within-field stratification of larvae and pupae of Mexican rice borer, Eoreuma loftini (Dyar), and there was a trend for hot water-treated fields to contain a higher proportion of younger larvae than other fields.
Barcoding generalist predators by polymerase chain reaction: carabids and spiders
TLDR
Polymerase chain reaction (PCR) is used to distinguish closely related carabids and spiders, and to match eggs and larvae (or nymphs) with identified adult parents.
Nectar Feeding by Wandering Spiders on Cotton Plants
TLDR
A cold anthrone test to detect the presence of ingested fructose, a plant-derived sugar, in wandering spiders occupying cotton plants, suggests that nectarivory is common for foliage wandering spiders and may contribute to fitness.
Culicoides-virus interactions: infection barriers and possible factors underlying vector competence.
Management of North American Culicoides Biting Midges: Current Knowledge and Research Needs.
TLDR
Current knowledge of vector ecology and control tactics for North American Culicoides species is outlined, and research recommendations aimed to fill knowledge gaps are delineated.
Effect of Temperature on Replication of Epizootic Hemorrhagic Disease Viruses in Culicoides sonorensis (Diptera: Ceratopogonidae)
TLDR
It is shown that increasing temperature can shorten the apparent extrinsic incubation period for multiple EHDV strains (endemic and exotic) in C. sonorensis, consistent with previous studies of related orbiviruses.
The Role of Generalist Predators in Terrestrial Food Webs: Lessons for Agricultural Pest Management
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