Results 71 to 80 of about 33,235 (336)

Analysis of 18 Free Amino Acids in Honeybee and Bumblebee Honey from Eastern and Northern Europe and Central Asia Using HPLC-ESI-TQ-MS/MS Approach Bypassing Derivatization Step

open access: yesFoods, 2022
The profile of amino acids and mono- and disaccharides in conventional polyfloral honey originated from Latvia and Tajikistan and less found in nature bumblebee honey from Russia was investigated.
Fredijs Dimins   +4 more
doaj   +1 more source

Higher developmental temperature increases queen production and decreases worker body size in the bumblebee Bombus terrestris

open access: yesJournal of Hymenoptera Research, 2021
Climate change and increasing average temperatures are now affecting most ecosystems. Social insects such as bumblebees are especially impacted because these changes create spatial, temporal and morphological mismatches that could impede their ability to
M. Guiraud   +4 more
semanticscholar   +1 more source

Parasites of the genus Nosema, Crithidia and Lotmaria in the honeybee and bumblebee populations: a case study in India

open access: yesВавиловский журнал генетики и селекции, 2018
The populations of honeybees and bumblebees have been decreasing around the world in the recent decades. A variety of pathogens and parasites, including  bacteria, fungi, protozoa, nematodes, mites and insects play signi ficant role in honeybee and ...
V. Y. Vavilova   +4 more
doaj   +1 more source

Lipolytic Activity of a Carboxylesterase from Bumblebee (Bombus ignitus) Venom

open access: yesToxins, 2021
Bee venom is a complex mixture composed of peptides, proteins with enzymatic properties, and low-molecular-weight compounds. Although the carboxylesterase in bee venom has been identified as an allergen, the enzyme’s role as a venom component has not ...
Yijie Deng   +7 more
doaj   +1 more source

Exact traversable wormhole solution in bumblebee gravity [PDF]

open access: yesPhysical Review D, 2018
We find a new traversable wormhole solution in the framework of the bumblebee gravity theory in which the Lorentz symmetry violation arises from the dynamics of the bumblebee vector field non-minimally coupled to gravity.
A. Ovgun, K. Jusufi, .Izzet Sakalli
semanticscholar   +1 more source

BumbleKey: an interactive key for the identification of bumblebees of Italy and Corsica (Hymenoptera, Apidae) [PDF]

open access: yes, 2018
BumbleKey is a matrix-based, interactive key to all 45 species of bumblebees of Italy and Corsica. The key allows to identify adult males and females (queens and workers) using morphological characters. The key is published online, open-access, at http://
Cappellari, Andree   +3 more
core   +2 more sources

Exact modifications on a vacuum spacetime due to a gradient bumblebee field at its vacuum expectation value

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
This work belongs to the context of the standard-model extension, in which a Lorentz symmetry violation is induced by a bumblebee field as it acquires a nonzero vacuum expectation value.
F. P. Poulis, M. A. C. Soares
doaj   +1 more source

Cosmological implications of Bumblebee vector models

open access: yes, 2015
The Bumblebee Model of spontaneous Lorentz symmetry breaking is explored in a cosmological context, considering a single non-zero time component for the vector field.
Capelo, Diogo, Páramos, Jorge
core   +1 more source

Substantial variability in morphological scaling among bumblebee colonies

open access: yesRoyal Society Open Science, 2022
Differences in organ scaling among individuals may play an important role in determining behavioural variation. In social insects, there are well-documented intraspecific differences in colony behaviour, but the extent that organ scaling differs within ...
C. D. Perl   +7 more
doaj   +1 more source

Bumblebees Learn Polarization Patterns [PDF]

open access: yesCurrent Biology, 2014
Foraging insect pollinators such as bees must find and identify flowers in a complex visual environment. Bees use skylight polarization patterns for navigation, a capacity mediated by the polarization-sensitive dorsal rim area (DRA) of their eye. While other insects use polarization sensitivity to identify appropriate habitats, oviposition sites, and ...
Nicholas W. Roberts   +6 more
openaire   +4 more sources

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