Results 11 to 20 of about 233 (111)

The effects of single and mixed infections ofApicystis bombiand deformed wing virus inBombus terrestris

open access: yesParasitology, 2015
SUMMARYMany pollinators are currently suffering from declines, diminishing their gene pool and increasing their vulnerability to parasites. Recently, an increasing diversity of parasites has been recorded in bumblebees, yet for many, knowledge of their virulence and hence the risk their presence poses, is lacking.
PETER GRAYSTOCK   +4 more
openaire   +4 more sources

Comprehensive bee pathogen screening in Belgium reveals Crithidia mellificae as a new contributory factor to winter mortality. [PDF]

open access: yesPLoS ONE, 2013
Since the last decade, unusually high honey bee colony losses have been reported mainly in North-America and Europe. Here, we report on a comprehensive bee pathogen screening in Belgium covering 363 bee colonies that were screened for 18 known disease ...
Jorgen Ravoet   +6 more
doaj   +3 more sources

Assessment of intestinal parasites in the coexisting Bombus terrestris (Apidae) and Xylocopa augusti (Apidae) in central Chile [PDF]

open access: yesRevista Chilena de Historia Natural, 2020
Bombus terrestris is a European bumblebee extensively commercialized worldwide for crop pollination. In Chile, this species was introduced in 1997 and after confinement escape, it has spread and established in several localities of central-southern Chile
Kiara Fernández   +3 more
doaj   +2 more sources

Transmission of a bumblebee parasite is robust despite parasite exposure to extreme temperatures. [PDF]

open access: yesEcol Evol, 2023
The transmission of a prevalent bumblebee gut parasite is robust to exposure to extreme temperatures. Therefore, its transmission is unlikely to be affected by temperature differences across the seasons, between climates and with climate change in the future.
Wolmuth-Gordon HS, Brown MJF.
europepmc   +2 more sources

How Population Structure and Nest Membership Shape Pathogen Patterns in Bumble Bees. [PDF]

open access: yesMol Ecol
ABSTRACT Host density, genetic diversity and social groups are key factors influencing pathogen transmission in wildlife populations, but their interactions remain poorly understood in insects. Islands can provide natural laboratories with distinct populations that vary in density and genetic diversity, whereby dense, genetically homogeneous ...
Dobelmann J, Wilfert L.
europepmc   +2 more sources

Urban landscapes tend to increase the presence of pathogenic protozoa, microsporidia and viruses, but likely decrease the abundance of viruses in wild bees and wasps. [PDF]

open access: yesInsect Sci
• The bees Anthophora plumipes and Osmia cornuta had a higher occurrence probability of the neogregarine protozoan Apicystis bombi in more fragmented urban areas.• In the bee Halictus scabiosae and wasp Polistes dominula, hotter urban areas increased the likelihood of occurrence of viruses.• The viruses were found to be replicative in the samples, and ...
Ferrari A, Cilia G, Polidori C.
europepmc   +2 more sources

Urbanization Shifts Immunometabolism in a Common Bumblebee. [PDF]

open access: yesEcol Evol
Cities provide contrasting habitats for pollinators and it proves difficult to predict the overall effect of urban living on the health of wild bees. By combining measurements of local competition, pathogen pressures, and exposure to pollutants along an urbanization gradient, we evidenced an upregulation of genes involved in immunometabolism in bees ...
Cuvillier-Hot V   +8 more
europepmc   +2 more sources

Core symbionts, age at inoculation and diet affect colonization of the bumblebee gut by a common bacterial pathogen. [PDF]

open access: yesJ Anim Ecol
This paper examines ecological interactions within the bumblebee gut microbiome and between the microbiome and host using field sampling and controlled experiments. We demonstrate that non‐core bacteria occur frequently in high abundance in wild bumblebee gut microbiomes.
Nelson AS, Larson MJ, Hammer TJ.
europepmc   +2 more sources

Microbial Evolution in Allodapine Bees: Perspectives From Trophallactic, Socially Plastic Pollinators. [PDF]

open access: yesEvol Appl
ABSTRACT This review seeks a deeper functional understanding of wild bee microbiomes by focusing on a tribe of bees where natural history and behavioral ecology are well known but investigations of microbiology are just beginning. Opportunities to improve our future knowledge of pathogens to insect pollinators are explored—which have broad ...
Tierney SM, Jeffries TC, Koch H.
europepmc   +2 more sources

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