Results 21 to 30 of about 163 (83)
Comprehensive bee pathogen screening in Belgium reveals Crithidia mellificae as a new contributory factor to winter mortality. [PDF]
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 +1 more source
The tragedy of the common? A comparative population genomic study of two bumblebee species
We investigated the population genomics and parasite load of two bumblebee species across the UK and Ireland. Bombus pratorum is widespread while Bombus monticola shows a more fragmented distribution. Notably, both species have suffered significant declines in Ne over the last 100 generations and estimates and declines for both species were of similar ...
Jana V. Huml +5 more
wiley +1 more source
Bumble bee colony health and performance vary widely across the urban ecosystem
Urbanization can affect species diversity. Yet, whether urbanization affects fitness remains largely neglected. This experiment using bumblebee colonies reveals strong relationships between temperature and landscape‐scale drivers and colony health, performance and reproductive success, suggesting that environmental heterogeneity within the urban ...
Panagiotis Theodorou +8 more
wiley +1 more source
Expanding insect pollinators in the Anthropocene
ABSTRACT Global changes are severely affecting pollinator insect communities worldwide, resulting in repeated patterns of species extirpations and extinctions. Whilst negative population trends within this functional group have understandably received much attention in recent decades, another facet of global changes has been overshadowed: species ...
Guillaume Ghisbain +4 more
wiley +1 more source
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 +3 more sources
Sulfoxaflor exposure reduces egg laying in bumblebees Bombus terrestris
Regulatory bodies such as the European Food Safety Authority (EFSA) are under increasing pressure to consider the potential impact of insecticides on wild bees, such as bumblebees, but sublethal effects can go undetected at lower‐tier testing. In identifying just such an effect for bumblebees exposed to sulfoxaflor, this study highlights that ...
Harry Siviter +4 more
wiley +1 more source
While many bee species are experiencing population declines, some host plant generalist bees remain common in Europe, partly because they seem able to shift to new resources.
Maryse Vanderplanck +12 more
doaj +1 more source
Resource supplementation later in the colony cycle improves real‐world bumblebee colony survival
Our findings suggest that B. terrestris colonies became food‐limited towards the end of their colony cycle in early summer. We suggest ecological intensification through planting native wildflower species may be more effective if it targets this flowering period, particularly within heavily arable areas, and that a staggered patchwork of mowing or ...
Leo Fordham, Ellouise Leadbeater
wiley +1 more source
The information learned from discovered wild bumble bee nests can be of great conservation value if studied in situ and post‐season excavation in a standardised way. We provide standardised guidance to follow when nest discoveries arise, including key conservation questions and methodological guidelines to study behaviour, floral use, genetics, body ...
Tamara A. Smith +12 more
wiley +1 more source

