Results 51 to 60 of about 3,387 (183)

Size variation and foraging rate in bumblebees ( Bombus terrestris ) [PDF]

Insectes Sociaux, 2002
Summary. Size polymorphism is an important life history trait in bumblebees with strong impact on individual behavior and colony organization. Within a colony larger workers tend to serve as foragers, while smaller workers fulfill inhive tasks. It is often assumed that size-dependent division of labor relates to differences in task performance. In this
Spaethe, Johannes, Weidenmüller, Anja
openaire   +2 more sources

The behavioural responses of bumblebees <i>Bombus terrestris</i> to simulated rain. [PDF]

R Soc Open Sci
Bumblebee activity typically decreases during rainfall, putting them under the threat of the increased frequency of precipitation due to climate change. A novel rain machine was used within a flight arena to observe the behavioural responses of bumblebees ( Bombus terrestris ) to simulated ...
Reeves LA, Jarvis EM, Lawson DA, Rands SA.   +3 more
europepmc   +5 more sources

Comparing time‐lapse photography and traditional human observation in collecting crop pollinator visitation data Ajastetun valokuvauksen ja perinteisen suoran havainnoinnin vertailu kerättäessä tietoa pölyttäjien kukkakäynneistä viljelykasveilla

Agricultural and Forest Entomology, EarlyView.
Time‐lapse photography with commercially available trail cameras provides a competitive alternative to direct human observations for documenting pollinator flower visits, but its performance varies between crops. In apple, the cameras recorded more diverse pollinator assemblages than the human observer due to larger temporal coverage of the camera ...
Marjaana Toivonen, Paula Humberg
wiley   +1 more source

Taxonomic and functional diversity of urban bees of the world

Conservation Biology, EarlyView.
Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso, Pietro K. Maruyama, Ingrid N. Gomes, Lorena B. Valadão‐Mendes, Victor H. D. Silva, Larissa Lorraine, Jordana O. Borges, Rogério V. Gonçalves, Léo C. Rocha‐Filho, Renata Trevizan, Yasmine Antonini   +10 more
wiley   +1 more source

Fungicide Non‐Target Effects Cause Reduced Sawfly Herbivory in Treated and Neighbouring Strawberry Plants

Entomologia Experimentalis et Applicata, EarlyView.
Application of the fungicide Switch 62.5 WG in garden strawberry (Fragaria × ananassa), targeting Botrytis cinerea, reduced sawfly (Cladius spp.) herbivory by up to 94% and improved fruit quality. This non‐target effect also spilled over to neighbouring untreated plants, lowering damage by 46%.
Esther Kuper, Mudassir Iqbal, Åsa Lankinen, Erik Andreasson, Johan A. Stenberg   +4 more
wiley   +1 more source

Bombus terrestris Linnaeus 1758

, 2017
Bombus terrestris (Linnaeus, 1758) Species almost cosmopolitan, with a distribution that extends from northern Europe to north Africa and from central Asia to the Macaronesia, naturally distributed from 0 to 3000 m (Ornosa & Ortiz-Sánchez 2004). It has become increasingly important commercially for its pollination services to agriculture.
Ornosa, Concepción, Torres, Félix, Rúa, Pilar De La   +2 more
openaire   +2 more sources

Host Detection by Cuckoo Bumblebees: Choice Experiments Reveal Non‐Visual Cues Support Host Detection, but Accuracy Is Low

Entomologia Experimentalis et Applicata, EarlyView.
Female Bombus vestalis cuckoo bumblebees were introduced to a flight arena containing four identical opaque boxes, featuring slits to release volatiles from the bumblebees inside. When only one box contained a developing host colony, the cuckoos were able to locate their hosts among the four boxes with 66.2% accuracy.
Sofia Dartnell, Hamish Symington, Lynn V. Dicks   +2 more
wiley   +1 more source

RNA editing is abundant and correlates with task performance in a social bumblebee

Nature Communications, 2019
Bumblebee workers are genetically highly similar but they show different behaviors such as brood care and foraging. Here the authors report a high level of ADAR-mediated RNA editing in the bumblebee Bombus terrestris and its weak correlation to task ...
Hagit T. Porath, Esther Hazan, Hagai Shpigler, Mira Cohen, Mark Band, Yehuda Ben-Shahar, Erez Y. Levanon, Eli Eisenberg, Guy Bloch   +8 more
doaj   +1 more source

Urban habitat fragmentation and floral resources shape the occurrence of gut parasites in two bumblebee species

Ecology and Evolution, 2023
Urbanization and the expansion of human activities foster radical ecosystem changes with cascading effects also involving host‐pathogen interactions. Urban pollinator insects face several stressors related to landscape and local scale features such as ...
Nicola Tommasi, Beatrice Colombo, Emiliano Pioltelli, Paolo Biella, Maurizio Casiraghi, Andrea Galimberti   +5 more
doaj   +1 more source

Floral richness drives flower–insect networks in city gardens and allotments

Ecological Entomology, EarlyView.
Floral richness was the main driver of flower visits within green spaces whilst green space in the surrounding landscape influenced flower visits by amplifying the effects of floral richness. Native plants received more visits than non‐native plants, although flower visitor richness to non‐native plants increased later in the season as non‐native plant
Emma Plant, Ria Dunkley, William A. O. McGhee, Dominic J. McCafferty, Davide M. Dominoni   +4 more
wiley   +1 more source