Results 11 to 20 of about 22,703 (241)

Genus-Wide Characterization of Nuclear Mitochondrial DNAs in Bumblebee (Hymenoptera: Apidae) Genomes

open access: yesInsects, 2021
In eukaryotes, DNA of mitochondria is transferred into the nucleus and forms nuclear mitochondrial DNAs (NUMTs). Taking advantage of the abundant genomic resources for bumblebees, in this study, we de novo generated mitochondrial genomes (mitogenomes ...
Lele Ding, Huiling Sang, Cheng Sun
doaj   +1 more source

Simple and farmer-friendly bumblebee conservation: Straw bales as nest sites in agricultural landscapes

open access: yesBasic and Applied Ecology, 2022
Many bumblebee species are declining due to a loss of semi-natural habitats in agricultural landscapes resulting in diminished forage and nest sites. Anecdotal experience indicates that bumblebees nest in straw bales, but scientific evidence is lacking ...
Sandra A.M. Lindström   +2 more
doaj   +1 more source

Rotating BTZ-like black hole and central charges in Einstein-bumblebee gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We obtain an exact rotating BTZ-like black hole solution by solving the corresponding gravitational field equations and the bumblebee motion equations in Einstein-bumblebee gravity theory.
Chikun Ding   +5 more
doaj   +1 more source

Quantifying the relative predation pressure on bumblebee nests by the European badger (Meles meles) using artificial nests

open access: yesEcology and Evolution, 2020
Bumblebee populations are declining. Factors that impact the size and success of colonies act by either limiting resource availability (bottom‐up regulation) or causing mortality, for example, pesticides, disease, and possibly predation (top‐down ...
Bethany R. Roberts   +2 more
doaj   +1 more source

BumbleBee: A Transformer for Music

open access: yesCoRR, 2021
We will introduce BumbleBee, a transformer model that will generate MIDI music data . We will tackle the issue of transformers applied to long sequences by implementing a longformer generative model that uses dilating sliding windows to compute the attention layers. We will compare our results to that of the music transformer and Long-Short term memory
Lucas Fenaux, Maria Juliana Quintero
openaire   +2 more sources

Metric-affine bumblebee gravity: classical aspects

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We consider the metric-affine formulation of bumblebee gravity, derive the field equations, and show that the connection can be written as Levi-Civita of a disformally related metric in which the bumblebee field determines the disformal part.
Adrià Delhom   +4 more
doaj   +1 more source

Braneworlds in bumblebee gravity

open access: yesNuclear Physics B, 2023
We investigate thick-brane solutions within the five-dimensional bumblebee gravity in the presence of a real scalar field. Specifically, we implement the Lorentz symmetry breaking scenario within this context and obtain brane-like structures.
M.A. Marques   +3 more
doaj   +1 more source

Pattern of population structuring between Belgian and Estonian bumblebees [PDF]

open access: yes, 2019
Several population genetic studies investigated the extent of gene flow and population connectivity in bumblebees. In general, no restriction in gene flow is considered for mainland populations of common bumblebee species.
Karise, Reet   +4 more
core   +1 more source

Interspecific Variation in Bumblebee Performance on Pollen Diet: New Insights for Mitigation Strategies. [PDF]

open access: yesPLoS ONE, 2016
Bumblebees (i.e. Bombus genus) are major pollinators of flowering wild plants and crops. Although many species are currently in decline, a number of them remain stable or are even expanding.
Romain Moerman   +4 more
doaj   +1 more source

Review of the methods to determine the hazard and toxicity of pesticides to bumblebees [PDF]

open access: yes, 2001
Methods to determine the impact of pesticides on bumblebees are described. They are classified into laboratory tests to determine the acute toxicity and the hazard to bumblebees, (semi) field tests, and brood tests.
Steen, J.J.M., van der
core   +5 more sources

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