@article{thompson_brandenburg_arends_2006, title={Impact of moisture and UV degradation on Beauveria bassiana (Balsamo) Vuillemin conidial viability in turfgrass}, volume={39}, ISSN={["1049-9644"]}, DOI={10.1016/j.biocontrol.2006.08.004}, abstractNote={Beauveria bassiana conidial viability in turfgrass was evaluated using a two-component nucleic acid stain and fluorescence microscopy. Turfgrass samples along with the top 5 cm of soil were used for conidial extraction and viability evaluation on 1, 2, 3, 7, 14 and 21 days after treatment. There were no differences in conidial viability between two Orthoptera strains, 3622 and 5977, and both strains were able to persist in a sandy loam soil for up to three weeks after application. High and low irrigation levels were applied to each of the two strains and results show that higher irrigation (5.1 cm/week) maintains conidial viability better than a low irrigation level (2.5 cm/week). Mean conidial viability was approximately 8–12% greater in plots with the high irrigation regime. Rather than significantly increase soil moisture levels, it is hypothesized that the greater amount of irrigation helps to move the conidia deeper into the thatch layer and soil profile, an area that provides protection from damaging surface temperatures and UV exposure. Rainfall that occurred during the beginning of the 2005 test minimized the irrigation effect, and the irrigation treatment differences were more pronounced after 48 h. Four different UV protectants were evaluated for an impact on conidial viability of strain 3622. Two protectants, an optical brightener and magnesium silicate clay, when added to an emulsifiable oil formulation, significantly increased conidial viability on all evaluation dates. The clay particles act as a sunlight blocker while the optical brightener absorbs UV light. The combined protection from the oil and the additive increased conidial viability by approximately 10% on all evaluation dates. Results from this study provide insight into ways to increase entomopathogenic fungal viability under field conditions.}, number={3}, journal={BIOLOGICAL CONTROL}, author={Thompson, Sarah R. and Brandenburg, Rick L. and Arends, Jim J.}, year={2006}, month={Dec}, pages={401–407} } @article{thompson_brandenburg_arends_2005, title={Conidial viability and pathogenicity of Beauveria bassiana (Balsamo) Vuillemin for mole cricket (Orthoptera: Gryllotalpidae) control in turfgrass}, volume={10}, journal={International Turfgrass Society Research Journal}, author={Thompson, S. R. and Brandenburg, R. L. and Arends, J. J.}, year={2005}, pages={784} } @article{crawford_brooks_arends_1998, title={Efficacy of field-isolated strains of Beauveria bassiana (Moniliales : Moniliaceae) as microbial control agents of the lesser mealworm (Coleoptera : Tenebrionidae)}, volume={91}, ISSN={["1938-291X"]}, DOI={10.1093/jee/91.6.1295}, abstractNote={Two field isolates (NC2 and NC3) of Beuveria bassiana (Balsamo) Vuillemin were evaluated as microbial control agents of the lesser mealworm, Alphitobius diaperinus (Panzer), in a bioassay system incorporating physical characteristics of commercial poultry houses. Both isolates produced >90% mortality in new litter against larval A. diaperinus at the highest application rate (2.37 × 1011conidia per square meter) 2 wk after application. Neither isolate achieved as high a rate of mortality in used litter. Adult A. diaperinus were less susceptible than larvae to these isolates. At the highest application rate (2.37 × 1011conidia per square meter), isolate NC2 conidia achieved 60%mortality of adults in new litter and 33%mortality in old litter. The same concentration of isolate NC3 conidia produced 68 and 33% mortality in new and used litter, respectively.}, number={6}, journal={JOURNAL OF ECONOMIC ENTOMOLOGY}, author={Crawford, PJ and Brooks, WM and Arends, JJ}, year={1998}, month={Dec}, pages={1295–1301} } @inbook{arends_1991, title={External parasites and poultry pests}, ISBN={0813804299}, booktitle={Diseases of poultry}, publisher={Ames, Iowa, USA : Iowa State University Press}, author={Arends, J. J.}, year={1991}, pages={702} } @article{arends_1991, title={Managing mange. Losses to swine industry may reach $230 million annually}, volume={46}, number={1}, journal={Large Animal Veterinarian}, author={Arends, J.}, year={1991}, pages={6} } @article{arends_stanislaw_gerdon_1990, title={Effects of sarcoptic mange on lactating swine and growing pigs}, volume={68}, DOI={10.2527/1990.6861495x}, abstractNote={The impact of Sarcoptic mange on sows and on performance of their offspring from birth to slaughter was determined. Sows naturally infested with Sarcoptic mange were paired, mated to the same boar, and assigned randomly to treated or control farrowing groups. Treated sows received ivermectin s.c. at 300 micrograms/kg body weight; control sows received the vehicle s.c. Sow performance was evaluated via sow feed consumption, litter size, litter birth weights, litter weaning weights and piglet death loss from birth to weaning. Seven replicates (farrowing groups), each with six sow pairs, were included in the trial. Offspring from treated and control sows, 35 head/group, were fed to slaughter weights. Untreated sows had litters that weighed 4.14 kg less than ivermectin-treated sow litters at 21 d (P less than .07). Treated sows consumed 1.95 kg less feed per weaned piglet and .13 kg less feed per kilogram of weaned piglet (P less than .05). Piglets from treated sows were 5.79 kg/head heavier at slaughter (P less than .05) and had a .05 kg/d superior average daily gain (P less than .05).}, number={6}, journal={Journal of Animal Science}, author={Arends, J. J. and Stanislaw, C. M. and Gerdon, D.}, year={1990}, pages={1495} } @article{geden_edwards_arends_axtell_1987, title={EFFICACIES OF MIXTURES OF DISINFECTANTS AND INSECTICIDES}, volume={66}, ISSN={["0032-5791"]}, DOI={10.3382/ps.0660659}, abstractNote={Efficacies of mixtures of diluted commercial formulations of selected insecticides and disinfectants were evaluated. Insecticides tested included representative pyrethroids (fenvalerate [Ectrin WDL and WD] and permethrin [Ectiban EC]), organophosphates (dichlorvos [Vapona EC], tetrachlorvinphos [Rabon WP] and dichlorvos/tetrachlorvinphos [RaVap EC], and a carbamate (carbaryl [Sevin S]). Disinfectants tested included representatives of cresylic acid (Biolene), cresylic acid/phenol (BioGuard X-185), phenol (1-Stroke Environ), quaternary ammonium (BioGuard S-3 and PFP-4), quaternary ammonium/formalin (DC & R), and formalin classes of disinfectants. Mixtures were tested for toxicity to two target insects (Musca domestica on plywood, Alphitobius diaperinus in litter) and two bacteria (Pseudomonas aeruginosa and Staphylococcus aureus). Of 56 mixtures evaluated, 24 showed reduced insecticidal toxicity and 35 showed reduced bactericidal activity compared with insecticides or disinfectants alone.}, number={4}, journal={POULTRY SCIENCE}, author={GEDEN, CJ and EDWARDS, TD and ARENDS, JJ and AXTELL, RC}, year={1987}, month={Apr}, pages={659–665} } @article{geden_arends_axtell_1987, title={FIELD TRIALS OF STEINERNEMA-FELTIAE (NEMATODA, STEINERNEMATIDAE) FOR CONTROL OF ALPHITOBIUS-DIAPERINUS (COLEOPTERA, TENEBRIONIDAE) IN COMMERCIAL BROILER AND TURKEY HOUSES}, volume={80}, ISSN={["1938-291X"]}, DOI={10.1093/jee/80.1.136}, abstractNote={Infective juveniles of the All strain of Steinernema feltiae Filipjev were applied (100,000 per square meter) to the soil floors of one broiler and two turkey houses with known recent histories of infestation with lesser mealworm, Alphitobius diaperinus (Panzer). After addition of fresh litter and new flocks of birds, beetle populations increased more slowly in treated than in untreated houses on all three farms, but at 10–13 weeks posttreatment adult beetle populations were about equal in treated and untreated houses. Soil samples were bioassayed biweekly for presence of nematodes by adding beetle larvae. Nematodes persisted (63–87% beetle mortality) for 7 weeks posttreatment on two of the farms; on the third farm, beetle mortality was < 50% at 3 weeks posttreatment. When soil in plastic containers was treated at varying nematode rates and held for 6 months in a poultry house, beetle mortality ranged from 0 (103 nematodes per square meter) to 48.2% (105 nematodes per square meter).}, number={1}, journal={JOURNAL OF ECONOMIC ENTOMOLOGY}, author={GEDEN, CJ and ARENDS, JJ and AXTELL, RC}, year={1987}, month={Feb}, pages={136–141} }