A5049629999- Plant and animal studies
- Insect and Pesticide Research
- Insect and Arachnid Ecology and Behavior
- Insect-Plant Interactions and Control
- Insect Resistance and Genetics
- Animal Behavior and Reproduction
- Botany and Geology in Latin America and Caribbean
- Blockchain Technology Applications and Security
- Horticultural and Viticultural Research
- Cognitive Functions and Memory
- Plant Virus Research Studies
- Distributed systems and fault tolerance
- Berry genetics and cultivation research
University of Maryland, College Park
2015-2025
Oregon State University
2024-2025
Université Libre de Bruxelles
2009
Managed honey bee colony losses are of concern in the USA and globally. This survey, which documents rate loss during 2015–2016 season, is tenth report winter losses, fifth summer annual losses. Our results summarize responses 5725 valid survey respondents, who collectively managed 427,652 colonies on 1 October 2015, an estimated 16.1% all USA. Responding beekeepers reported a total 40.5% [95% CI 39.8–41.1%] between April 2015 2016. Total was 26.9% 26.4–27.4%] while 23.6% 23.0–24.1%], making...
Honey bee colony losses are a major concern in the USA and across globe. Long-term data on critical for putting yearly context. US loss surveys have been conducted since winter of 2006–2007. Here, we report results from eighth annual survey second summer losses. There were 7425 valid respondents (7123 backyard, 190 sideline, 112 commercial beekeepers) managing 497,855 colonies, 19 % total colonies. Total reported 19.8 [95 CI 19.3–20.3 %] over summer, 23.7 23.3–24.1 winter, 34.1 33.6–34.6...
Declines of pollinators and high mortality rates honey bee colonies are a major concern, both in the USA globally. Long-term data on summer, winter, annual colony losses improve our understanding forces shaping viability pollination industry. Since mass die-offs during winter 2006–2007, generally termed "Colony Collapse Disorder" (CCD), loss surveys have been conducted. These gage among beekeepers all operation sizes, recruited to participate via regional beekeeping organizations, phone...
Beekeepers in the United States have experienced high losses of managed honey bee (Apis mellifera) colonies for more than a decade. Long-term, multi-year monitoring efforts are crucial to provide temporal and spatial context these losses. To document explain losses, Bee Informed Partnership has conducted national surveys on since spring 2011, continuing work first commissioned by Apiary Inspectors America 2007. Here we present survey results from three years – 2017–18, 2018–19, 2019–20. Each...
The parasitic mite Varroa destructor (Acari: Varroidae) is a major cause of overwintering honey bee (Apis mellifera) colony losses in the United States, suggesting that beekeepers must control populations to maintain viable colonies. Beekeepers have access several chemical varroacides and nonchemical practices populations. However, no studies examined large-scale patterns methods States. Here we used responses from 4 yr annual surveys representing all regions operation sizes across States...
Honey bee colony losses in the US have exceeded acceptable levels for at least a decade, leaving beekeepers need of management practices to improve health and survival. Here, an empirical Best Management Practice (BMP) regimen was tested, comprised top four associated with reduced mortality backyard beekeeping operations according Bee Informed Partnership Loss survey results. Seven study locations were established across US, each location consisted ten colonies treated BMPs average practice....
In recent years, high losses of Western honey bee (Apis mellifera) colonies have been reported in the United States. Because bees are important to agricultural systems, it is critical document when occur and explore patterns loss among beekeeper subgroups. We used a voluntary, retrospective questionnaire ask U.S. beekeepers (backyard, sideline, commercial) about their colony during 2020–21 2021–22 beekeeping seasons. found that lost 50.8% (38.0–63.1; 95% b.CI) 2020–21, highest annual...
Western honey bees (Apis mellifera) have experienced elevated rates of colony loss over the past decade. Past studies attempted to determine what factors are behind these losses; however, few considered effects environmental variables; key drivers in ecological systems. Existing investigations were conducted at local spatial scales, small geographic areas, and failed measure how variables may influence differently across space. Here, we sought ability explain bee winter contiguous U.S. a...
Specialty crops like blueberries depend heavily on pollinators, particularly bees, for enhanced fruit set and optimized yield. The Northern highbush blueberry, widely cultivated in the Pacific Northwest of United States, includes several key cultivars such as ‘Duke’ ‘Elliott’. Given that pollination efficiency is directly linked to availability quality pollen, understanding pollen production these critical optimizing strategies maximizing yield throughout growing season. Additionally, bees...
A metagenomic analysis of the virome honey bees (Apis mellifera) from an apiary with high rates unexplained colony losses identified a novel RNA virus. The virus, which was named Apis mellifera solinvivirus 1 (AmSV1), contains 10.6 kb positive-strand genomic single ORF coding for polyprotein protease, helicase, and RNA-dependent polymerase domains, as well jelly-roll structural protein domain, showing highest similarity viruses in family Solinviviridae. injection bee pupae AmSV1 preparation...
Abstract BACKGROUND Agricultural insect pests frequently exhibit geographic variation in levels of insecticide resistance, which are often presumed to be due the intensity use for pest management. However, regional differences evolution resistance novel insecticides suggests that other factors influencing rates adaptation. We examined median lethal concentration (LC 50 ) bioassay data spanning 15 years and six (abamectin, imidacloprid, spinosad, cyantraniliprole, chlorantraniliprole,...
Understanding amateur beekeepers' perception of risks affecting bee health and mortality is essential to analyse the reasons for adopting or rejecting good management practices. A survey on how beekeepers perceive manage factors related climate change, Varroa infestation, practices, pesticide exposure was designed launched online. This unpreceded sociological involved 355 spread all over Belgium. two-sample t test with unequal variances comparing colony loss rates below exceeding acceptable...
Abstract The western honey bee, Apis mellifera , faces a new threat from the spread of parasitic Tropilaelaps (Tropi) mites, specifically T. mercedesae which adds additional complexity to an apicultural landscape heavily impacted by Varroa destructor . In this study conducted in central Thailand, we investigated efficacy two methods applying formic acid and thermal remediation technique controlling Tropi mites focusing our attention on reproductive stage is restricted capped brood cells....
In this chapter we present a synthesis of recommendations for conducting field experiments with honey bees in the context agricultural pollination. We begin an overview methods determining mating system requirements plants and efficacy specific pollinators. describe evaluating pollen-vectoring capacity at level individuals or colonies follow optimum colony stocking densities. include sections post-harvest effects pollination, management (including glasshouse enclosure) on bee pollination...