The impacts of predators and parasites on wild bumblebee colonies

@article{Goulson2017TheIO,
  title={The impacts of predators and parasites on wild bumblebee colonies},
  author={D. Goulson and S. O'Connor and Kirsty J. Park},
  journal={Ecological Entomology},
  year={2017},
  volume={43}
}
1. The study of wild bumblebee nests has been hindered by the difficulty in locating and observing them. Here, 47 wild nests were located using a sniffer dog and volunteers. The entrances to 32 nests were filmed continuously to identify successful nests (those that produced gynes) and observe vertebrate species interactions. 
Quantifying the relative predation pressure on bumblebee nests by the European badger (Meles meles) using artificial nests
TLDR
It is suggested that higher predation may relate to activity and foraging behavior of badgers in woodland compared with grassland, and how badger predation in different habitats could impact different bumblebee species according to their nesting behaviors is discussed. Expand
Prevalence of Nosema microsporidians in commercial bumblebees (Bombus terrestris) is not related to the intensity of their use at the landscape scale
TLDR
The initial infection status of commercial Bombus terrestris colonies is assessed in SW Spain and spatial and seasonal influences on changes in parasite prevalence across a landscape where bumblebee colonies are intensively used to pollinate berry crops are explored. Expand
Trialling techniques for rearing long-tongued bumblebees under laboratory conditions
TLDR
This work attempts to further develop techniques, using queen pairing and Bombus terrestris cocoons, to successfully rear two common long-tongued bumblebee species ( B. pascuorum and B. hortorum ) in captivity in captivity. Expand
Effect of timing and exposure of sunflower pollen on a common gut pathogen of bumble bees
TLDR
Ingestion of sunflower pollen can dramatically reduce the bumble bee gut pathogen Crithidia bombi, but little is known about how timing and exposure to sunflower pollen consumption affects pathogen load. Expand
Training and usage of detection dogs to better understand bumble bee nesting habitat: Challenges and opportunities
TLDR
Constraints and possibilities observed while training detection dogs to locate bumble bee nests are reported, and three main considerations around future training and usage of detection dogs were identified. Expand
Contrasting effects of land cover on nesting habitat use and reproductive output for bumble bees
TLDR
This example shows that it is possible to directly measure nesting habitat use and quality for bumble bee species, and whether hay fields are high-quality nesting sites for the one species that used them, B. impatiens, might benefit from heterogeneous landscapes with forests and meadows. Expand
Sunflower pollen reduces a gut pathogen in worker and queen but not male bumble bees
TLDR
This work is extended to the reproductive individuals that represent colony fitness – males and queens – to assess if the medicinal effects of sunflower pollen vary with bee caste and sex. Expand
Preinfection Effects of Nectar Secondary Compounds on a Bumble Bee Gut Pathogen
TLDR
It is suggested that Crithidia exposure in some floral nectars may reduce cell viability, resulting in a lower risk to visiting pollinators, but this effect may not be widespread across all flowering species. Expand
Landscape composition and local floral resources influence foraging behavior but not the size of Bombus impatiens Cresson (Hymenoptera: Apidae) workers
TLDR
It is found that foraging activity decreased with intensive crops and higher diversity of local floral resources led to lower pollen constancy in intensively cultivated landscapes, and conservation actions regarding pollinators in arable landscapes should be made at the landscape rather than at the farm level. Expand
Crithidia bombi can infect two solitary bee species while host survivorship depends on diet
TLDR
It is demonstrated that solitary bees can be hosts of a known bumble bee pathogen, and that access to pollen is an important contributing factor for bee survival, thus expanding the understanding of factors contributing to solitary bee health. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 80 REFERENCES
Effects of resource availability and social parasite invasion on field colonies of Bombus terrestris
Abstract 1. The survival, growth and fecundity of bumblebee colonies are affected by the availability of food resources and presence of natural enemies. Social parasites (cuckoo bumblebees and otherExpand
Mortality rates of adult bumble bee workers (Hymenoptera: Apidae)
Survivorship data were obtained for a cohort of 274 individually marked workers of the bumble bee Bombus terricola Kirby. The mortality rate was very nearly constant for the first 14 days of adultExpand
A field experiment on the effect of Nosema bombi in colonies of the bumblebee Bombus terrestris
TLDR
This study investigates whether N. bombi also has negative fitness effects under natural conditions. Expand
Preferred nesting sites of bumblebee queens (Hymenoptera: Apidae) in agroecosystems in the UK
TLDR
In order to safeguard the continued existence of bumblebee species it is clear that a variety of field and forest boundary types need to be conserved; this has positive implications for the conservation of other species of flora and fauna associated with agroecosystems. Expand
Habitat preferences of nest-seeking bumble bees (Hymenoptera: Apidae) in an agricultural landscape
TLDR
Nest-seeking queens were observed most frequently along forest boundaries and field boundaries, in open uncultivated areas and in the relatively open landscape, whereas they were least frequent in forest and in clearings. Expand
Colony success of the bumble bee, Bombus terrestris, in relation to infections by two protozoan parasites, Crithidia bombi and Nosema bombi
TLDR
Overall, C. bombi showed low levels of virulence which fits recent models for parasites with correlated horizontal and vertical transmission rates, and early colonies and those with large first brood and large maximum size were at an advantage. Expand
Testing a detection dog to locate bumblebee colonies and estimate nest density
TLDR
The training and testing of a dog and its efficacy in finding buried nest material of a range of bumblebee species was 100%, and no false positives were recorded, suggesting that the dog was able to generalize across Bombus species. Expand
Quantifying and comparing bumblebee nest densities in gardens and countryside habitats
Summary 1. Bumblebees provide an important pollination service to both crops and wild plants. Many species have declined in the UK, particularly in arable regions. While bumblebee forage requirementsExpand
Homing ability of the bumblebee Bombus terrestris (Hymenoptera: Apidae)
TLDR
The ability of bumblebees to locate their nest site following artificial displacement was investigated, suggesting that the natural foraging range of B. terrestris may span several km and that the most probable homing mechanism is a systematic search until familiar landmarks are encountered. Expand
Colony growth of the bumblebee, Bombus terrestris, in improved and conventional agricultural and suburban habitats
TLDR
It is argued that B. terrestris probably forage over a larger scale than that on which farms are managed, so that nest growth is determined by the management of a large number of neighbouring farms, not just that in which the nest is located. Expand
...
1
2
3
4
5
...