A5083355864- Insect and Pesticide Research
- Plant and animal studies
- Insect and Arachnid Ecology and Behavior
- Insect-Plant Interactions and Control
- Avian ecology and behavior
- Insect Pest Control Strategies
- Wildlife Ecology and Conservation
- Bee Products Chemical Analysis
- Pneumonia and Respiratory Infections
- Forest Management and Policy
- Seedling growth and survival studies
- Tuberculosis Research and Epidemiology
- Animal Ecology and Behavior Studies
- Animal Behavior and Reproduction
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Gothic Literature and Media Analysis
- Ecology and Vegetation Dynamics Studies
- Plant and Fungal Interactions Research
- Immune Cell Function and Interaction
- Plant Parasitism and Resistance
- Forest Insect Ecology and Management
- Species Distribution and Climate Change
- Entomopathogenic Microorganisms in Pest Control
Pennsylvania State University
2008-2024
Virginia Cooperative Extension
2023
University of Maryland, College Park
2011-2013
Kutztown University
2010-2013
Agricultural Research Service
2010
University of Manitoba
2001-2009
Over the last two winters, there have been large-scale, unexplained losses of managed honey bee (Apis mellifera L.) colonies in United States. In absence a known cause, this syndrome was named Colony Collapse Disorder (CCD) because main trait rapid loss adult worker bees. We initiated descriptive epizootiological study order to better characterize CCD and compare risk factor exposure between populations afflicted by not CCD.Of 61 quantified variables (including physiology, pathogen loads,...
Honey bees are an essential component of modern agriculture. A recently recognized ailment, Colony Collapse Disorder (CCD), devastates colonies, leaving hives with a complete lack bees, dead or alive. Up to now, estimates honey bee population decline have not included losses occurring during the wintering period, thus underestimating actual colony mortality. Our survey quantifies extent in United States over winter 2007-2008.Surveys were conducted quantify and identify management factors...
SummaryThis study records the third consecutive year of high winter losses in managed honey bee colonies USA. Over 2008–9 an estimated 29% all US died. Operations which pollinated Californian almond orchards over survey period had lower average than those did not. Beekeepers consider normal to be 17.6%, and 57.9% responding beekeepers suffered greater that they considered acceptable. The proportion operations with Colony Collapse Disorder (CCD) symptom "no dead bees colony or apiary"...
Summary This study records the fifth consecutive year that winter losses of managed honey bee (Apis mellifera) colonies in USA have been around 30%. In April 2011, a total 5,441 US beekeepers (an estimated 11% beekeepers) responded to survey conducted by Bee Informed Partnership. Survey respondents reported they had lost an average 38.4% their colonies, for colony loss 29.9% over 2010–11. One-third (all classified as backyard beekeepers, i.e. keeping fewer than 50 colonies) no loss. There...
SummaryThis study records the fourth consecutive year of high winter losses in managed honey bee (Apis mellifera) colonies USA. Over 2009–2010, US beekeepers responding to this survey lost an average 42.2% their colonies, for a total loss 34.4%. Commercial (those operating more than 500 colonies) experienced lower as compared sideline and backyard beekeepers. Similarly, operations that maintained one state pollinated almond orchards over period had either managing exclusively or those not...
Management by beekeepers is of utmost importance for the health and survival honey bee colonies. Beekeeping management practices vary from low to high intervention regarding use chemicals, hive manipulations, supplemental feeding In this study, we quantitative data Bee Informed Partnership's national survey investigate drivers among in United States. This first study quantitatively examine these variables objectively describe different groups We hypothesized that goals are based on...
types of study design; observational and experimental. The advantages limitations both are discussed. Approaches to calculate interpret results detailed. Methods for calculating epidemiological measures such as detection rare events, associating exposure disease (Odds Ratio Relative Risk), comparing prevalence incidence Naturally, beekeepers, the adoption any management system must have economic advantage. We present a means determine cost benefit treatment in order its net benefit. Lastly,...
The queen caste plays a central role in colony success eusocial insects, as queens lay eggs and regulate behavior development. Queen failure can cause colonies to collapse, which is one of the major concerns beekeepers. Thus, understanding biology behind queen’s health pressing issue. Previous studies have shown that bee microbiome an important worker health, but little known about its function vivo . Here, we characterized microbiome, identifying for first time present species their...
SummaryIn this paper, we describe the use of epidemiological methods to understand and reduce honey bee morbidity mortality. Essential terms are presented defined also give examples for their use. Defining such as disease, population, sensitivity, specificity, provides a framework comparisons. The term in particular, is quite complex an organism like because one can view "epidemiological unit" individual bees, colonies, apiaries, or operations. population interest must, therefore, be clearly...
Although a preventable and treatable disease, tuberculosis (TB) is among the top 10 causes of death worldwide. A consequence inadequately treated drug-susceptible TB (DS-TB) multidrug-resistant (MDR-TB).To improve our understanding primary drivers incidence prevalence DS- MDR-TB in China.The Tuberculosis Disease Transmission Model (TBDTM) uses historical current disease epidemiology transmission trends treatment effectiveness, accounts for annual changes to these estimate future DS-TB...
Abstract In temperate climates, honey bees rely on stored carbohydrates to sustain them throughout the winter. nature, serves as bees’ source of carbohydrates, but when managed, beekeepers often harvest and replace it with cheaper, artificial feed. The effects alternative carbohydrate sources colony survival, strength, individual bee metabolic health are poorly understood. We assessed impacts diets (honey, sucrose syrup, high-fructose corn invert syrup) winter population size, worker...
Controlling populations of varroa mites is crucial for the survival beekeeping industry. Many treatments exist, and all are designed to kill on adult bees. Because majority found under capped brood, most deliver active ingredients over an extended period control bees, as developing bees emerge. In this study, a 17-h application 50% formic acid effectively killed in worker brood without harming queens or uncapped brood. Neither acetic nor combined treatment acids applied West Virginia...
Indoor fumigation of honey bees, Apis mellifera L., with formic acid to control varroa mites, Varroa destructor Anderson & Trueman, allows simultaneous multiple colonies little labor input and good efficacy. Several experiments were designed test the efficacy as a treatment for bee Acarapis woodi (Rennie) (Acari: Tarsonemidae), nosema disease, Nosema sp., indoors in winter. The objectives this study (1) determine mite by using both thoracic slice live dissection methods (2) whether indoor...
The combination of the concentration formic acid and duration fumigation (CT product) during indoor treatments honey bee, Apis mellifera L., colonies to control varroa mite, Varroa destructor Anderson & Trueman, determines efficacy treatment. Because high concentrations can cause queen mortality, we hypothesized that a CT product given as low over long exposure time rather than short would allow effective mites without detrimental effects on queens. objective this study was assess different...
he Bee Informed Partnership (BIP) received a 5-year Coordinated Ag-riculture Project (CAP) grant from the National Institute of Food and Agri-culture (NIFA) to use an epidemiological approach identify risk factors associated with honey bee colony losses. An epide- Ð that contribute disease occurrence in population, advocates for promotes ways reduce exposure factors, seeks incidence at population level.Epidemiological studies concentrate on understanding...
Abstract Honey bee colony management is critical to mitigating the negative effects of biotic and abiotic stressors. However, there significant variation in practices implemented by beekeepers, which results varying systems. This longitudinal study incorporated a systems approach experimentally test role three representative beekeeping (conventional, organic, chemical-free) on health productivity stationary honey-producing colonies over 3 years. We found that survival rates for conventional...
Formic acid treatment for the control of ectoparasitic varroa mite, Varroa destructor Anderson & Trueman, infesting honey bee, Apis mellifera L., colonies is usually carried out as an in-hive outdoor treatment. This study examined use formic on wintered kept indoors at 5°C from 24 November 1999 to March 2000. Colonies were placed in small rooms that not treated (control) or fumigated three different concentrations acid: low (mean 11.9 ± 1.2 ppm), medium 25.8 1.4 high 41.2 3.3 48 h 22–24...
Abstract This study examined the effects of indoor fumigation with formic acid on survival honey bee, Apis mellifera L. (Hymenoptera: Apidae), queens and varroa mites ( Varroa destructor Anderson Trueman (Acari: Varroidae)). A relationship between cumulative concentration mite mortality was established for colonies subjected to high-concentration while held indoors at 2–4 °C during winter. We also release pattern room ventilation rate queen loss treatment efficacy fumigation. Two experiments...
Annual losses of honey bee colonies are high in the United States, with often attributed to effects ectoparasitic mite, Varroa destructor, and its associated viruses (e.g., Deformed Wing Virus, DWV). In spring, beekeepers rely on package bees replace lost colonies. However, these packages come levels mites treated miticides upon installation. Oxalic acid (OA) is a popular miticide used but little known about long-term efficacy for mite control. On other hand, natural behavior that helps...