Results 31 to 40 of about 101,101 (246)

Bumble bees create a buzz [PDF]

open access: yesScience, 2017
Conservation Foraging bees create characteristic vibrations at frequencies of 120 to 400 Hz. Miller-Struttmann et al. set out to investigate whether the vibrations created by bumble bees can be used to estimate pollination success. They show that physical attributes such as body size and tongue length, which influence pollination success, are ...
openaire   +2 more sources

Abundance and Diversity of Native Bumble Bees Associated with Agricultural Crops: The Willamette Valley Experience

open access: yesPsyche: A Journal of Entomology, 2010
There are widespread concerns about declining populations of bumble bees due to conversion of native habitats to agroecosystems. Certain cropping systems, however, provide enormous foraging resources, and are beneficial for population build up of native ...
Sujaya Rao, W. P. Stephen
doaj   +1 more source

Flower Color as Predictor for Nectar Reward Quantity in an Alpine Flower Community

open access: yesFrontiers in Ecology and Evolution, 2021
Entomophilous plants have evolved colorful floral displays to attract flower visitors to achieve pollination. Although many insects possess innate preferences for certain colors, the underlying proximate and ultimate causes for this behavior are still ...
Martin Streinzer   +2 more
doaj   +1 more source

Bumble bees of Unama'ki [PDF]

open access: yes, 2021
I. What s all the Buzz about?II. Amu of Unama kiIII. Bee-coming an advocate for bumblebeesBumble bees of Unama’ki: A Guide to Becoming a Buzzing Naturalist is an online guide targeted at the young and the young at heart naturalist that is interested in ...
Kosick, Hannah
core   +1 more source

Morphological characterization and staging of bumble bee pupae [PDF]

open access: yesPeerJ, 2018
Bumble bees (Hymenoptera: Apidae, Bombus) are important pollinators and models for studying mechanisms underlying developmental plasticity, such as factors influencing size, immunity, and social behaviors. Research on such processes, as well as expanding
Li Tian, Heather M. Hines
doaj   +2 more sources

Analyzing the Dietary Diary of Bumble Bee [PDF]

open access: yesFrontiers in Plant Science, 2020
Bumble bees are important crop pollinators and provide important pollination services to their respective ecosystems. Their pollen diet and thus food preferences can be characterized through nucleic acid sequence analysis. We present ITS2 amplicon sequence data from pollen collected by bumble bees. The pollen was collected from six different bumble bee
Leidenfrost, Robert M.   +5 more
openaire   +4 more sources

Does pathogen spillover from commercially reared bumble bees threaten wild pollinators? [PDF]

open access: yesPLoS ONE, 2008
The conservation of insect pollinators is drawing attention because of reported declines in bee species and the 'ecosystem services' they provide. This issue has been brought to a head by recent devastating losses of honey bees throughout North America ...
Michael C Otterstatter, James D Thomson
doaj   +1 more source

Compensation for wind drift by bumble-bees

open access: yes, 1999
In his classic studies on honeybee navigation, von Frisch had to rely on qualitative visual observations of the bees' flight paths, but nevertheless reached the surprising conclusion that bees seem to anticipate lateral wind drift and compensate by ...
Osborne, J. L.   +9 more
core   +1 more source

Repellency of insecticides and the effect of thiacloprid on bumble bee colony development in red clover (Trifolium pratense L.) seed crops

open access: yesActa Agriculturae Scandinavica. Section B, Soil and Plant Science, 2019
The study intended to compare repellency of three insecticides on bumble bees and honey bees in Norwegian red clover (Trifolium pratense L.) seed crops, and to examine effects of thiacloprid on bumble bee colony development in the field.
Lars T. Havstad   +3 more
doaj   +1 more source

Using respiratory physiology techniques in assessments of pesticide effects on bees

open access: yesJulius-Kühn-Archiv, 2018
The determination of sub-lethal effects of pesticides on beneficial insects is challenging topic because the vast number of different possible endpoints. Traditionally measured endpoints reflect the basic outcome but do not give any information about the
Karise, Reet   +3 more
doaj   +1 more source

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