Results 91 to 100 of about 34,476 (278)

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

Przestrzenne i czasowe zróżnicowanie Apoidea w lasach Wielkopolskiego Parku Narodowego [PDF]

open access: yes, 1994
Results of the investigations of spatial and temporal differentiations of Apoidea in the forests of Wielkopolski National Park were presented. It was shown that the both forest floor differ with the degree of species differentiation and domination’s ...
Banaszak, Józef, Cierzniak, Tomasz
core  

Discriminations of Color and Pattern on Artificial Flowers by Male and Female Bumble Bees, \u3ci\u3eBombus Impatiens\u3c/i\u3e (Hymenoptera: Apidae) [PDF]

open access: yes, 2018
This study examined the performance of male bumble bees (Bombus impatiens) in color and pattern discriminations and compared it to that of female bees. Bees were trained to forage from rewarding (S+) and unrewarding (S-) artificial flowers which differed
Church, Dana   +2 more
core   +2 more sources

Incorporating citizen science, museum specimens, and field work into the assessment of extinction risk of the American Bumble bee (Bombus pensylvanicus De Geer 1773) in Canada

open access: yesJournal of Insect Conservation, 2019
Many Bumble bee (Bombus) species are in decline and conservation efforts must be undertaken now to lessen or reverse the trend. For effective efforts to occur, the first step must be an accurate assessment of extinction risk.
V. J. MacPhail   +2 more
semanticscholar   +1 more source

Brood parasitism reduces but does not prevent Bombus terrestris reproductive success

open access: yesInsect Science, EarlyView.
Graphical depiction of the colony splitting process. Throughout figures in this paper, results pertaining to host success are represented in blue, and cuckoo success is represented in red. Abstract Cuckoo bumblebees are obligate brood parasites that must invade a colony of their host bumblebee species in order to reproduce.
Sofia Dartnell, Lynn V. Dicks
wiley   +1 more source

Bumble Bees of Florida

open access: yesEDIS
This is a general guide to field identification, species description, and biology of the five bumble bee species Bombus spp. found in Florida. This guide to bumble bee identification in Florida would also be usable for coastal South Carolina, Georgia ...
Rachel Mallinger   +3 more
doaj   +1 more source

A Test of Bombus terrestris Cocoon and other Common Methods for Nest Initiation in B. lapidarius and B. hortorum

open access: yesJournal of Apicultural Science, 2012
Porównano kilka metod stymulacji zakładania gniazd (ze szczególnym uwzględnieniem wykorzystania kokonów Bombus terrestris) przez matki B. lapidarius i B. hortorum. Stwierdzono, że procent matek B. lapidarius, które wybudowały pierwszą miseczkę na jaja na
Bučánková Alena, Ptáček Vladimír
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

Prevalence of infection by the microsporidian Nosema spp. in native bumblebees (Bombus spp.) in northern Thailand

open access: yesPLoS ONE, 2019
Bumblebees (tribe Bombini, genus Bombus Latreille) play a pivotal role as pollinators in mountain regions for both native plants and for agricultural systems.
Chainarong Sinpoo   +3 more
semanticscholar   +1 more source

Bombus (Bombus) affinis Cresson 1863

open access: yes, 2017
Published as part of Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, pp.
Gibbs, Jason   +3 more
openaire   +1 more source

Home - About - Disclaimer - Privacy