FRONTIERS IN MICROBIOLOGY 16/08/16 Honey Bee Gut Microbiome Is Altered by In-Hive Pesticide Exposures. ADIPOLOGIE - 2014 - Toxicity of insecticides used in the Brazilian melon crop to the honey bee Apis mellifera under laboratory conditions. WebImagesPlus… Connexion Recherche avancée Scholar Scholar [PDF] à partir de researchgate.netresearchgate.net [PDF]
APVMA_GOV_AU - FEV 2014 - Overview report - neonicotinoids and the health of honey bees in Australia. February 2014 The APVMA has completed a broad overview of issues relating to honeybee health in Australia, with a particular focus on the use of neonicotinoid ('neonics') insecticides.
During the preparation of this report titled Overview Report - Neonicotinoids and the Health of Honeybees in Australia (PDF, 1.75Mb) | (DOC, 374kb) we consulted with a wide range of stakeholders including: In addition, we examined a large number of published scientific papers and reports as well as three published risk assessments on clothianidin, imidacloprid and thiamethoxam carried out by the European Food Safety Authority. The report: Recommendations and research suggestions. Front Physiol. 2013; 4: 352. Assessing homing failure in honeybees exposed to pesticides: Guez's (2013) criticism illustrates pitfalls and challenges. MOTHER JONES 14/05/15 Bee Die-Offs Are Worst Where Pesticide Use Is Heaviest.
The nation's honeybee crisis has deepened, with colony die-offs rising sharply over last year's levels, the latest survey from the US Department of Agriculture-funded Bee Informed Partnership shows.
A decade or so ago, a mysterious winter-season phenomenon known as colony-collapse disorder emerged, in which bee populations would abandon their hives en masse. These heavy winter-season losses have tapered off somewhat, but now researchers are finding substantial summer-season losses, too. Here are the latest numbers. Chart: Bee Informed Partnership/University of Maryland/Loretta Kuo Note that total losses are more than double what beekeepers report as the "acceptable rate"—that is, the normal level of hive attrition. And here's a map a map depicting where losses are heaviest: A growing weight of science implicated pesticides—particularly a ubiquitous class of insecticides called neonicitinoids, as well as certain fungicides—as likely factors.
EPA / SANTE CANADA / CALIFORNIA DEPARTMENT OF PESTICIDE REGULATION 19/06/14 Guidance for Assessing Pesticide Risks to bees. PLOS 08/01/14 Four Common Pesticides, Their Mixtures and a Formulation Solvent in the Hive Environment Have High Oral Toxicity to Honey Bee Larvae. Recently, the widespread distribution of pesticides detected in the hive has raised serious concerns about pesticide exposure on honey bee (Apis mellifera L.) health.
A larval rearing method was adapted to assess the chronic oral toxicity to honey bee larvae of the four most common pesticides detected in pollen and wax - fluvalinate, coumaphos, chlorothalonil, and chloropyrifos - tested alone and in all combinations. All pesticides at hive-residue levels triggered a significant increase in larval mortality compared to untreated larvae by over two fold, with a strong increase after 3 days of exposure. Among these four pesticides, honey bee larvae were most sensitive to chlorothalonil compared to adults.
Synergistic toxicity was observed in the binary mixture of chlorothalonil with fluvalinate at the concentrations of 34 mg/L and 3 mg/L, respectively; whereas, when diluted by 10 fold, the interaction switched to antagonism. Figures Copyright: © 2014 Zhu et al. Introduction Diet preparation.
Bulletin of insectology - 2013 - Reduction in homing flights in the honey bee Apis mellifera after a sublethal dose of neonicoti. SCIENCE 10/05/13 Pesticides Under Fire For Risks to Pollinators. APINEWS 16/07/13 BRAZIL- ENZYMATIC BIOMARKERS AS TOOLS TO ASSESS ENVIRONMENTAL QUALITY: A CASE OF STUDY OF EXPOSURE OF THE HONEY. Paper prepared by Stephan M.
Carvalho, Luc P. Belzunces, Geraldo A. Carvalho, Jean-Luc Brunet and Alexandra Badiou-Beneteau Abstract The present study was intended to evaluate the responses of enzymes in the honeybee Apis mellifera after exposure to deltamethrin, fipronil, and spinosad and their use as biomarkers. 2013 - Aspects determining the risk of pesticides to wild bees: risk profiles for focal crops on three continents. Basic and Applied Ecology, Volume 11, Issue 2, March 2010, Impacts of a pesticide on pollinator species richness at different sp. Abstract Pesticides are an important potential cause of biodiversity and pollinator decline.
Little is known about the impacts of pesticides on wild pollinators in the field. Insect pollinators were sampled in an agricultural system in Italy with the aim of detecting the impacts of pesticide use. The insecticide fenitrothion was over 150 times greater in toxicity than other pesticides used in the area, so sampling was set up around its application. Species richness of wild bees, bumblebees and butterflies were sampled at three spatial scales to assess responses to pesticide application: (i) the ‘field’ scale along pesticide drift gradients; (ii) the ‘landscape’ scale sampling in different crops within the area and (iii) the ‘regional’ scale comparing two river basins with contrasting agricultural intensity.
Zusammenfassung Pestizide stellen einen möglichen Grund für die Diversitäts- und Bestäuberabnahme dar. Keywords. Pesticide toxicity to bees. Pesticides vary in their effects on bees.
Contact pesticides are usually sprayed on plants and can kill bees when they crawl over sprayed surfaces of plants or other media. Systemic pesticides, on the other hand, are usually incorporated into the soil or onto seeds and move up into the stem, leaves, nectar, and pollen of plants. Dust and wettable powder pesticides tend to be more hazardous to bees than solutions or emulsifiable concentrates for contact pesticides. Int. J. Environ. Res. Public Health 2011, 8, 3844-3858 Detection of Pesticides in Active and Depopulated Beehives in Uruguay. Pest Manag Sci 63:1047–1050 (2007) In Focus: Pesticides and honeybees – the work of the ICP-BR Bee Protection Group Editorial. INTECH - OCT 2011 - Pesticide Residues in Bee Products. Maringá, v. 34, n. 4, p. 433-436, Oct.-Dec, 2012 Pesticides in the propolis at São Saulo State, Brazil. Sociobiology Vol. 56, No. 3, 2010 Impact of Botanical Insecticides on Indigenous Stingless Bees (Hymenoptera: Apidae)
The Scientific World Journal Volume 2012 (2012), Antibiotic, Pesticide, and Microbial Contaminants of Honey: Human Health Hazard. OEPP - EPPO activities related to honeybees. PLOS 03/01/12 Multiple Routes of Pesticide Exposure for Honey Bees Living Near Agricultural Fields. Populations of honey bees and other pollinators have declined worldwide in recent years.
A variety of stressors have been implicated as potential causes, including agricultural pesticides. Neonicotinoid insecticides, which are widely used and highly toxic to honey bees, have been found in previous analyses of honey bee pollen and comb material. However, the routes of exposure have remained largely undefined. We used LC/MS-MS to analyze samples of honey bees, pollen stored in the hive and several potential exposure routes associated with plantings of neonicotinoid treated maize.
Our results demonstrate that bees are exposed to these compounds and several other agricultural pesticides in several ways throughout the foraging period. Figures. CONGRESSIONAL RESEARCH SERVICE 11/12/12 Bee Health: The Role of Pesticides.