Results 21 to 30 of about 6,191 (184)

Endosymbionts that threaten commercially raised and wild bumble bees (Bombus spp.)

open access: yesJournal of Pollination Ecology, 2023
Bumble bees (Bombus spp.) are important pollinators for both wild and agriculturally managed plants. We give an overview of what is known about the diverse community of internal potentially deleterious bumble bee symbionts, including viruses, bacteria ...
Laura Figueroa   +14 more
doaj   +1 more source

Using the combined gene approach and multiple analytical methods to improve the phylogeny and classification of Bombus (Hymenoptera, Apidae) in China [PDF]

open access: yesZooKeys, 2020
Bumble bees are vital to our agro-ecological system, with approximately 250 species reported around the world in the single genus Bombus. However, the health of bumble bees is threatened by multiple factors: habitat loss, climate change, pesticide use ...
Liu-Hao Wang   +5 more
doaj   +3 more sources

Big city Bombus: using natural history and land-use history to find significant environmental drivers in bumble-bee declines in urban development [PDF]

open access: yesRoyal Society Open Science, 2017
Native bee populations are critical sources of pollination. Unfortunately, native bees are declining in abundance and diversity. Much of this decline comes from human land-use change.
Paul Glaum   +4 more
doaj   +1 more source

An evidence-based rationale for a North American commercial bumble bee clean stock certification program

open access: yesJournal of Pollination Ecology, 2023
The commercial production and subsequent movement of bumble bees for pollination of agricultural field and greenhouse crops is a growing industry in North America and globally.
James Strange   +13 more
doaj   +1 more source

Sensitivity of commercial pumpkin yield to potential decline among different groups of pollinating bees [PDF]

open access: yesRoyal Society Open Science, 2017
The yield of animal-pollinated crops is threatened by bee declines, but its precise sensitivity is poorly known. We therefore determined the yield dependence of Hokkaido pumpkin in Germany on insect pollination by quantifying: (i) the relationship ...
Sonja C. Pfister   +4 more
doaj   +1 more source

Male-biased night foraging by bumblebees (Hymenoptera, Apidae, Bombus spp.) in Taiwan [PDF]

open access: yesJournal of Hymenoptera Research, 2023
Known nocturnal behaviors of bees in the superfamily Apoidea, including the genus Bombus, were almost exclusively of females. Here we report observations of active free-ranging male Bombus at night in the plant nursery of the Fushan Research Center ...
Yun-Chen Hsieh   +5 more
doaj   +3 more sources

Novel data support model linking floral resources and honey bee competition with bumble bee abundances in coastal scrub

open access: yesJournal of Pollination Ecology, 2021
Growing evidence supports that many bee populations are declining, with potentially serious consequences for pollination services. Mechanistic models that predict bee abundances from drivers like floral resource availability can be a powerful way to ...
Diane M Thomson
doaj   +1 more source

The abundance and pollen foraging behaviour of bumble bees in relation to population size of whortleberry (Vaccinium uliginosum). [PDF]

open access: yesPLoS ONE, 2012
Habitat fragmentation can have severe effects on plant pollinator interactions, for example changing the foraging behaviour of pollinators. To date, the impact of plant population size on pollen collection by pollinators has not yet been investigated ...
Carolin Mayer   +4 more
doaj   +1 more source

Pollination of Sedirea japonica (Orchidaceae) by Bombus diversus diversus (Hymenoptera: Apidae)

open access: yesEuropean Journal of Entomology, 2013
There are no records of the pollinators of many orchids even though the Orchidaceae are often cited as the example of an intimate relationship between plants and their pollinators.
Kenji SUETSUGU, Koji TANAKA
doaj   +1 more source

Long-term changes in the composition and distribution of the Hungarian bumble bee fauna (Hymenoptera, Apidae, Bombus) [PDF]

open access: yesJournal of Hymenoptera Research, 2023
One of the most important pollinator taxa is Bombus (Hymenoptera, Apidae), the genus of bumble bees, since they are important, often specialized, pollinators of many plants.
Dóra Arnóczkyné Jakab   +6 more
doaj   +3 more sources

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