Results 31 to 40 of about 12,528 (188)

Analysis of Pollen and Nectar of Arbutus unedo as a Food Source for Bombus terrestris (Hymenoptera : Apidae) [PDF]

, 2005
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Marot, Cécile, Verhaeghe, JC, Chittka, Lars, Delcarte, Emile, Chittka, L, Lognay, G, Baudart, E, Marlier, Michel, Falmagne, Pol, Falmagne, P, Delcarte, E, Ings, T.C., Rasmont, Pierre, Falmagne, Paul, Ings, TC, Marot, C, Rasmont, P, Baudart, Evelyne, Regali, A., Marot, C., Verhaeghe, Jean-Claude, Marlier, M, Viville, Pascal, Ings, Thomas C., Regali, A, Chittka, L., Baudart, E., Regali, Ariane, Lognay, Georges, Delcarte, E., Viville, P   +30 more
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New records of bumble bees Bombus Latreille, 1802 (Hymenoptera: Apidae) in Khakassia (Russia) [PDF]

Кавказский энтомологический бюллетень, 2017
In total 38 species of bumble bees were known from Khakassia (Southern Siberia, Russia). New faunistic data for four species of bumble bees from Khakassia are reported. Bombus margreiteri Skorikov, 1910, B.  balteatus Dahlbom, 1832, and B.
S.V. Dragan, E.V. Sazanakova, N.A. Listvyagova   +2 more
doaj   +1 more source

Infection and transmission of Nosema bombi in Bombus terrestris colonies and its effect on hibernation, mating and colony founding

, 2008
The impact of the microsporidium Nosema bombi on Bombus terrestris was studied by recording mating, hibernation success, protein titre in haemolymph, weight change during hibernation, and colony founding of queens that were inoculated with N.
Steen, J.J.M., van der, Jozef J.M. van der Steen   +1 more
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Impacto de la polinización entomófila en la producción de semilla de trébol rojo, Trifolium pratense L. (Fabaceae) en Bahía Blanca, Argentina

EUNK Revista Científica de Abejas y Apicultores, 2022
En 2017, se dividieron plantas de trébol rojo (genotipo TRG), Trifolium pratense L. (Fabaceae), en tres tratamientos de polinización entomófila (Bombus pauloensis, Apis mellifera, polinización libre) y un testigo sin polinización entomófila.
Soledad Camila Villamil, Luciano Marinozzi, Facundo Ess   +2 more
doaj   +1 more source

Winter Active Bumblebees (Bombus terrestris) Achieve High Foraging Rates in Urban Britain

, 2010
BackgroundForaging bumblebees are normally associated with spring and summer in northern Europe. However, there have been sightings of the bumblebee Bombus terrestris during the warmer winters in recent years in southern England.
Carlton, M, Ralph J Stelzer, Stelzer, RJ, Lars Chittka, Thomas C Ings, Chittka, L, Marc Carlton, Ings, TC   +7 more
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Bumblebees of the hypnorum-complex world-wide including two new near-cryptic species (Hymenoptera: Apidae)

European Journal of Taxonomy, 2022
The hypnorum-complex of bumblebees (in the genus Bombus Latreille, 1802) has been interpreted as consisting of a single widespread Old-World species, Bombus hypnorum (Linnaeus, 1758) s.
Paul H. Williams, Phurpa Dorji, Zongxin Ren, Zhenghua Xie, Michael Orr   +4 more
doaj   +1 more source

The pollination potential of free-foraging bumblebee (Bombus spp.) males (Hymenoptera : Apidae) [PDF]

, 2014
Bumblebee workers are efficient pollinators. However, despite their flower visits and less intense grooming the role of males as pollen vectors is largely unexplored.
Wolf, Stephan, Moritz, R. F. A., Wolf, S., Moritz, Robin F.A.   +3 more
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Flower Preferences of the Wrocław Botanical Garden Bumblebees (Bombus spp.)

Journal of Apicultural Science, 2012
Trzmiele (Bombus spp.) morfologicznie różnią się od siebie długością języczka. W faunie Ogrodu Botanicznego stwierdzono występowanie 7 gatunków trzmieli, a wśród nich długojęzyczkowego Bombus hortorum i średniojęzyczkowego B.
Sikora Aneta, Kelm Maria
doaj   +1 more source

Bumble bees exhibit body size clines across an urban gradient despite low genetic differentiation

Scientific Reports, 2022
Environmental heterogeneity resulting from human-modified landscapes can increase intraspecific trait variation. However, less known is whether such phenotypic variation is driven by plastic or adaptive responses to local environments.
Matthew W. Austin, Amber D. Tripodi, James P. Strange, Aimee S. Dunlap   +3 more
doaj   +1 more source

Photoreceptor processing speed and input resistance changes during light adaptation correlate with spectral class in the bumblebee, Bombus impatiens.

, 2011
Colour vision depends on comparison of signals from photoreceptors with different spectral sensitivities. However, response properties of photoreceptor cells may differ in ways other than spectral tuning. In insects, for example, broadband photoreceptors,
Skorupski, P, Lars Chittka, Chittka, L, Peter Skorupski   +3 more
core   +1 more source