Results 31 to 40 of about 37,356 (336)

No evidence for neonicotinoid preferences in the bumblebee Bombus impatiens

open access: yesRoyal Society Open Science, 2020
Neonicotinoid pesticides can have a multitude of negative sublethal effects on bees. Understanding their impact on wild populations requires accurately estimating the dosages bees encounter under natural conditions. This is complicated by the possibility
Felicity Muth   +2 more
semanticscholar   +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

The effect of intrinsic physiological traits on diapause survival and their underlying mechanisms in an annual bee species Bombus impatiens

open access: yesConservation Physiology, 2020
Insects can use diapause to cope with extremes in seasonal environments. However, diapause is a physiologically demanding life stage that can result in mortality.
E. Treanore, E. Amsalem
semanticscholar   +1 more source

La importancia del color: morfos florales, tasas de visita y éxito reproductivo en el arbusto Sarothamnus scoparius

open access: yesEcología Austral, 2015
El estudio de la variación intraespecífica del color de las flores nos permite comprender mejor el papel de los polinizadores como agentes de selección, y su efecto sobre la abundancia de las variantes florales.
Sabrina S. Gavini   +1 more
doaj   +1 more source

A Local Replacement of \u3ci\u3eBombus Ternarius\u3c/i\u3e by \u3ci\u3eBombus Terricola\u3c/i\u3e in Northern Wisconsin (Hymenoptera: Apidae) [PDF]

open access: yes, 2017
During the last few years, the bumblebee Bombus ternarius Say has markedly decreased in numbers in Vilas County in northern Wisconsin while Bombus terricola Kirby has increased. The great ecological similarity of these species suggests that interspecific
Thomson, James D
core   +2 more sources

Impacts of Neonicotinoids on the Bumble Bees Bombus terrestris and Bombus impatiens Examined through the Lens of an Adverse Outcome Pathway Framework

open access: yesEnvironmental Toxicology and Chemistry, 2020
Bumble bees (Bombus sp.) are important pollinators for agricultural systems and natural landscapes and have faced population declines globally in recent decades.
A. Camp, D. M. Lehmann
semanticscholar   +1 more source

The complete mitochondrial genome of Bombus filchnerae (Hymenoptera: Apidae) and phylogenetic analysis

open access: yesMitochondrial DNA. Part B. Resources, 2021
Here, we report the complete mitochondrial genome (mitogenome) of Bombus filchnerae (Hymenoptera: Apidae). The genome size of B. filchnerae was 18,553 bp with 88.7% A + T content, containing 13 protein-coding genes (PCGs), 22 tRNA genes, two rRNA genes ...
Feng Zhou   +5 more
doaj   +1 more source

Parasite Prevalence May Drive the Biotic Impoverishment of New England (USA) Bumble Bee Communities

open access: yesInsects, 2021
Numerous studies have reported a diversity of stressors that may explain continental-scale declines in populations of native pollinators, particularly those in the genus Bombus.
Anne L. Averill   +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

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

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