Results 191 to 200 of about 785 (202)

Absconding Behaviour of the Africanized Honeybee in South America

Journal of Apicultural Research, 1979
SummaryAbsconding behaviour of the Africanized honeybee in French Guiana, South America, is described. Two types of absconding were recognized: disturbance-induced (i.e., predation, manipulation, etc.) and resource-related or seasonal absconding, probably induced by a dearth of resources during the wet season or by overheating during the dry season. In
Mark L. Winston, Gard W. Otis, Orley R. Taylor   +2 more
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Development Periods for Eggs of Africanized and European Honeybees

Journal of Apicultural Research, 1981
SummaryIn a side-by-side test in Venezuela, 593 eggs from 7 Africanized queen honeybees and 355 eggs from 7 European queens (from USA) were kept in an incubator (35 ± 1°C) without adult bees. Eggs from the two groups hatched after 69·6 ± 1·06 h and 73·3 ± 1·14 h, respectively (x ± SD), indicating a basic physiological difference between development ...
J. R. Harbo, A. B. Bolten, T. E. Rinderer, A. M. Collins   +3 more
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Response to Alarm Pheromone by European and Africanized Honeybees

Journal of Apicultural Research, 1987
SummaryWorkers of two honeybee (Apis mellifera L.) geographical types, European and Africanized, in Venezuela were assayed for response to sting-associated alarm pheromone. Groups of young bees were exposed to either isopentyl acetate (IPA) or a mixture of 10 alarm chemicals, including IPA, at five concentrations.
A. M. Collins, T. E. Rinderer, K. W. Tucker, D. G. Pesante   +3 more
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African-European honeybee hybrids have low nonintermediate metabolic capacities

Nature, 1993
BECAUSE of a number of behavioural, ecological and physiological factors, African honeybees (Apis mellifera scutellata) are better adapted to tropical environments than European bees. African bees achieve higher rates of reproduction and colony growth partly by collecting more pollen relative to nectar1 and by allocating more nutrients to brood ...
Jon F. Harrison, H. Glenn Hall
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Adaptive maintenance of European alleles in the Brazilian Africanized honeybee

Molecular Ecology, 2017
The Anthropocene is an epoch hallmarked by intensified human intrusion across ecosystems. One such intrusion is the movement and re‐introduction of long‐separated populations. By facilitating introgression – intraspecific genetic admixture – secondary contact can facilitate range expansion and the establishment of invasive species.
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Foraging Behavior of Competing Africanized Honeybees and Stingless Bees

Ecology, 1980
The colonizing success and potential influence of immigrant Africanized honeybees in the neotropics depends on their foraging style and competitive ability. Experiments were performed to compare the foraging tactics of this invading species to those of its most abundant competitors, highly social stingless bees of the genera Melipona and Trigona. In an
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Investigation of African honeybee races

Journal of High Resolution Chromatography, 1987
C. S. Sellers, T. Mar, W. Bertsch, R. M. Crewe   +3 more
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PATHOGENS IN AFRICANIZED HONEYBEES FROM BRAZIL

2022
Maria Emilene Correia-Oliveira, Júlio César Melo Poderoso, Eliaber Barros Santos, Raiane Barbosa Mendes, Jaíne S. Rebouças, Clara F. Cordeiro, Luciano S. Serra, Vanessa S. L. Neves, Carize da Cruz Mercês, Suelen Oliveira França, Carine Mascena Peixoto, Carlos A. L. de Carvalho   +11 more
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Africanized Honeybees

Science, 1985
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What physicians should know about Africanized honeybees

Journal of the American Academy of Dermatology, 1997
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