Results 21 to 30 of about 5,170 (214)

Visitation frequencies of bumblebees and swallowtail butterflies to flowers and the nectar sugar concentration of Rhododendron kaempferi and R. japonicum in mountains of central Japan

Journal of Pollination Ecology, 2017
Relationships between flower visitor composition and floral traits help us to understand floral evolution. Swallowtail butterflies have been assumed to be the main pollinators of Rhododendron kaempferi and R. japonicum based on their floral shapes, and R.
Keigo Takahashi, Takao Itino
doaj   +1 more source

Characteristics of the tomato fruit (Solanum lycopersicum) using native bumblebees (Bombus atratus) as pollinators in greenhouse

Agrociencia, 2020
In Uruguay, the production of tomato (Solanum lycopersicum) in greenhouse presents pollination issues that limit its yield. The use of bumblebees (Bombus spp.) as pollinators can help overcome this problem as they perform “buzzing pollination”, a ...
Sheena Salvarrey, Estela Santos, Natalia Arbulo, Gustavo Gimenéz, Ciro Invernizzi   +4 more
doaj   +1 more source

Higher Essential Amino Acid and Crude Protein Contents in Pollen Accelerate the Oviposition and Colony Foundation of Bombus breviceps (Hymenoptera: Apidae)

Insects, 2023
Pollen is an important source of nutrition for bumblebees to survive, reproduce, and raise their offspring. To explore the nutritional requirements for the egg laying and hatching of queenright Bombus breviceps colonies, camellia pollen, oilseed rape ...
Chang-Shi Ren, Zhi-Min Chang, Lei Han, Xiang-Sheng Chen, Jian-Kun Long   +4 more
doaj   +1 more source

Evidence for Handedness in Bumblebees [PDF]

Journal of Insect Behavior, 2001
We describe a simple study of how bumblebees (Bombus spp.) behave when visiting florets which are arranged in a circle around a vertical inflorescence. In four species of bees, individuals showed a tendency for rotation in the same direction around each inflorescence on successive visits, i.e., each individual tended to go either clockwise or ...
Kells, Andrea.R., Goulson, Dave
openaire   +2 more sources

Dominance of Fructose-Associated Fructobacillus in the Gut Microbiome of Bumblebees (Bombus terrestris) Inhabiting Natural Forest Meadows

Insects, 2022
Bumblebees are key pollinators in agricultural landscapes. However, little is known about how gut microbial communities respond to anthropogenic changes. We used commercially produced colonies of buff-tailed bumblebees (Bombus terrestris) placed in three
Ronalds Krams, Dita Gudra, Sergejs Popovs, Jonathan Willow, Tatjana Krama, Maris Munkevics, Kaspars Megnis, Priit Jõers, Davids Fridmanis, Jorge Contreras Garduño, Indrikis A. Krams   +10 more
doaj   +1 more source

Temperature and livestock grazing trigger transcriptome responses in bumblebees along an elevational gradient

iScience, 2022
Summary: Climate and land-use changes cause increasing stress to pollinators but the molecular pathways underlying stress responses are poorly understood.
Kristof Brenzinger, Fabienne Maihoff, Marcell K. Peters, Leonie Schimmer, Thorsten Bischler, Alice Classen   +5 more
doaj   +1 more source

Bumblebees [PDF]

, 2010
Since bumblebees are a group associated with cool climates, Britain supports a large proportion (~10%) of the world's bumblebee fauna. However, three of our 25 species have become extinct, and seven species are Biodiversity Action Plan (BAP) listed, a higher proportion than for any other insect group.
openaire   +1 more source

Detection of Lotmaria passim and Crithidia mellificae in Selected Bumblebee Species

Pathogens, 2022
Bumblebees (Bombus spp.) are an essential element of the ecosystem and the global economy. They are valued pollinators in many countries around the word.
Maria Michalczyk, Rajmund Sokół
doaj   +1 more source

Does bumblebee preference of continuous over interrupted strings in string-pulling tasks indicate means-end comprehension?

eLife
Bumblebees (Bombus terrestris) have been shown to engage in string-pulling behavior to access rewards. The objective of this study was to elucidate whether bumblebees display means-end comprehension in a string-pulling task.
Chao Wen, Yuyi Lu, Cwyn Solvi, Shunping Dong, Cai Wang, Xiujun Wen, Haijun Xiao, Shikui Dong, Junbao Wen, Fei Peng, Lars Chittka   +10 more
doaj   +1 more source

Equivocal Evidence for Colony Level Stress Effects on Bumble Bee Pollination Services

Insects, 2020
Climate change poses a threat to global food security with extreme heat events causing drought and direct damage to crop plants. However, by altering behavioural or physiological responses of insects, extreme heat events may also affect pollination ...
Arran Greenop, Nevine Mica-Hawkyard, Sarah Walkington, Andrew Wilby, Samantha M Cook, Richard F Pywell, Ben A Woodcock   +6 more
doaj   +1 more source