@article{shrader_burrack_pfeiffer_2019, title={Drosophila suzukii (Diptera: Drosophilidae) Oviposition and Adult Emergence in Six Wine Grape Varieties Grown in Virginia}, volume={112}, ISSN={["1938-291X"]}, DOI={10.1093/jee/toy305}, abstractNote={Abstract Drosophila suzukii (Matsumura) is a pest of small fruits and grapes in the United States and in its home range of Japan. Physiological and morphological laboratory testing was performed on six commonly grown wine grape varieties inVirginia. Skin thickness, penetration force, and °Brix were analyzed to determine ovipositional preferences. Experiments were performed for three consecutive years from grapes collected at one Virginia vineyard. More eggs were laid in intact Viognier grapes than any other variety. Oviposition into intact grapes was not affected by skin thickness or °Brix; however, oviposition increased when penetration force decreased. An ovipositional choice test determined no varietal preferences. Survivorship from egg to adulthood using uninjured and injured grapes was also assessed to determine varietal suitability as D. suzukii hosts, with more flies emerging from injured grapes than uninjured. However, D. suzukii adults did emerge from intact grapes and at higher percentages than previously recorded in other wine grape studies. All varieties had eggs oviposited into them when injured. Determining the time at which each grape variety became susceptible to oviposition was determined using a D. suzukii bioassay spanning 12 wk using grapes from the green pea stage until ripe. Susceptibility to D. suzukii oviposition was based upon ripening period and penetration force. Early ripening varieties may be more susceptible to D. suzukii oviposition in the field with later maturing, harder fleshed-varieties which may escape D. suzukii oviposition.}, number={1}, journal={JOURNAL OF ECONOMIC ENTOMOLOGY}, author={Shrader, Meredith Edana and Burrack, Hannah J. and Pfeiffer, Douglas G.}, year={2019}, month={Feb}, pages={139–148} }
 @article{pfeiffer_axtell_1980, title={COLEOPTERA OF POULTRY MANURE IN CAGED-LAYER HOUSES IN NORTH-CAROLINA}, volume={9}, ISSN={["1938-2936"]}, DOI={10.1093/ee/9.1.21}, abstractNote={At least 120 species of Coleoptera were recovered from poultry manure in narrow, widespan, and high-rise types of caged-layer poultry houses in the Mountains, Piedmont, and Coastal Plain regions of North Carolina. Carcinops pumilio (Erichson) and Alphitobius diaperinus (Panzer) were consistently the most abundant species in all 3 regions, followed by Gnathoncus nanus (Scriba) and the Aleocharinae (Staphylinidae). According to 5 indices of diversity, the Piedmont ranked 1st in overall diversity, species richness and equitability, followed by the Coastal Plain, and thirdly, by the Mountains.

Narrow and high/rise house types were compared for adult and larval C. pumilio and A. diaperinus . The larval population peak for A. diaperinus occurred significantly earlier in the high-rise than in the narrow houses, however, the narrow houses had significantly higher beetle diversity.

A qualitative examination of overwintering forms showed that most species overwintered primarily, but not exclusively, as adults.}, number={1}, journal={ENVIRONMENTAL ENTOMOLOGY}, author={PFEIFFER, DG and AXTELL, RC}, year={1980}, pages={21–28} }