Search Results - "bumblebees"

Sublethal effects of pesticide exposure in the buff-tailed bumblebee (Bombus terrestris): novel behavioural assay approaches. by James, Laura

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1. The effect of agri-environment schemes on bees on Shropshire farms. 2. The effect of agri-environment schemes on bumblebee colony success by Crowther, Lucy

“…As with other species linked to agricultural environments, bumblebees are exhibiting significant population declines. …”
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Masquerading as pea plants: behavioural and morphological evidence for mimicry of multiple models in an Australian orchid by Scaccabarozzi, Daniela, Cozzolino, S., Guzzetti, L., Galimberti, A., Milne, Lynne, Dixon, Kingsley, Phillips, R.D.

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Evidence for Batesian mimicry in a polymorphic hoverfly by Reader, Tom

“…We looked for geographical and temporal trends in frequencies of morphs of the polymorphic hoverfly Volucella bombylans that would support the hypothesis that these morphs are Batesian mimics of different bumblebee species. The frequency of the black and yellow hoverfly morph was significantly positively related to the frequency of black and yellow bumblebees across 52 sites. …”
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The evolution of imperfect mimicry in hoverflies by Gilbert, Francis

“…Hoverfly mimics fall into three major groups according to their models, involving bumblebees, honeybees and social wasps. There are striking differences in the general levels of mimetic fidelity and relative abundances of the three groups, with accurate mimicry, low abundance and polymorphism characterizing the bumblebee mimics: more than half of all the species of bumblebee mimics are polymorphic. …”
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Molecular and mitochondrial biology of eusocial bees: responses to stress and xenobiotics by Sargent, Chloe

“…Furthermore, it is demonstrated that bumblebees can be used as effective model organisms for research and development of pharmaceutical drugs. …”
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Does the abundance of hoverfly mimics (Syrphidae) depend on the numbers of their hymenopteran models ? by Howarth, Brigitte, Edmunds, Malcolm, Gilbert, Francis

“…Several eristaline flies showed significant relationships with honeybees even though some of them mimic wasps or bumblebees, perhaps reflecting an ancestral resemblance to honeybees. …”
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The effect of urbanisation on pollinator abundance and reproductive success by Lamb, Ieuan

“…Hoverflies and solitary bee populations were associated negatively with urbanisation but bumblebees, Lepidoptera and honey bees were unaffected. …”
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