Robert J. Curry

Warmer autumns and winters could reduce honey bee overwintering survival with potential risks for pollination services

Kirti Rajagopalan, Gloria DeGrandi‐Hoffman, Matthew J. Pruett, Vincent P. Jones et autres

Honey bees and other pollinators are critical for food production and nutritional security but face multiple survival challenges. The effect of climate change on honey bee colony losses is only recently being explored. While correlations between higher winter temperatures and greater colony …

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Simulating the Effects of Pesticides on Honey Bee (Apis mellifera L.) Colonies with BeePop+

Kristina V. Garber, Gloria DeGrandi‐Hoffman, Robert J. Curry, Jeffrey M. Minucci et autres

The US Environmental Protection Agency (USEPA) employs a tiered process for assessing risks of pesticides to bees. The model discussed in this paper focuses on honey bees (Apis mellifera L.). If risks to honey bees are identified at the first tier based …

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Changing honey bee overwintering dynamics under warmer autumns and winters create new risks for pollination services.

Kirti Rajagopalan, Gloria DeGrandi‐Hoffman, Matthew J. Pruett, Vincent P. Jones et autres

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Inferring pesticide toxicity to honey bees from a field‐based feeding study using a colony model and Bayesian inference

Jeffrey M. Minucci, Robert J. Curry, Gloria DeGrandi‐Hoffman, Cameron Douglass et autres

Abstract Honey bees are crucial pollinators for agricultural crops but are threatened by a multitude of stressors including exposure to pesticides. Linking our understanding of how pesticides affect individual bees to colony‐level responses is challenging because colonies show emergent properties based on …

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Sensitivity analyses for simulating pesticide impacts on honey bee colonies

A. Carmen Kuan, Gloria DeGrandi‐Hoffman, Robert J. Curry, Kristina V. Garber et autres

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Parameterization and sensitivity analysis of a honey bee colony dynamics model for neonicotinoid exposure events using Markov Chain Monte Carlo methods

Jeffrey M. Minucci, Robert J. Curry, Gloria DeGrandi‐Hoffman, Kris Garber et autres

Honey bee (Apis mellifera) colony losses have increased in recent decades in both Europe and North America. While multiple stressors to honey bee colonies appear to be driving this decline (including disease, nutrition, genetics), direct exposure to pesticides has been identified as …

Population growth of Varroa destructor (Acari: Varroidae) in commercial honey bee colonies treated with beta plant acids

Gloria DeGrandi‐Hoffman, Fabiana Ahumada, Robert J. Curry, Gene Probasco et autres

Varroa (Varroa destuctor Anderson and Trueman) populations in honey bee (Apis mellifera L.) colonies might be kept at low levels by well-timed miticide applications. HopGuard(®) (HG) that contains beta plant acids as the active ingredient was used to reduce mite populations. Schedules …

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The Postal Technology Market and Effects on Purchasing Strategy

William J. Dowling, Robert J. Curry, Robert A.F. Reisner, Bill Worth

Recent and forthcoming changes in the regulation of postal and delivery services throughout the world will have a major impact on this important sector. The contributors to this timely book, a combination of academics and industry insiders, address the trends toward privatization …

The population dynamics of varroa mites in honey bee colonies: Part III. How beekeeping practices could affect varroa populations.

Gloria DeGrandi‐Hoffman, Robert J. Curry

Simulated population dynamics of Varroa mites in honey bee colonies. II. What the VARROAPOP model reveals.

Gloria DeGrandi‐Hoffman, Robert J. Curry

The population dynamics of varroa mites in honey bee colonies: Part I - The VARROAPOP program.

Gloria DeGrandi‐Hoffman, Robert J. Curry

A mathematical model of Varroa mite ( Varroa destructor Anderson and Trueman) and honeybee ( Apis mellifera L.) population dynamics

Gloria DeGrandi‐Hoffman, Robert J. Curry

A mathematical model of population interactions between Varroa destructor and a honeybee colony is described. Validation tests indicate that the model generates mite population predictions that are similar to those from actual colonies including: weekly mite-drop, daily rates of population increase, and …

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