Results 171 to 180 of about 14,562 (200)

Biochemical response of the Africanized honeybee exposed to fipronil

Environmental Toxicology and Chemistry, 2016
Abstract   Bees are recognized worldwide for their social, economic, and environmental value. In recent decades they have been seriously threatened by diseases and high levels of pesticide use.
Roat, Thaisa C., Carvalho, Stephan M., Palma, Mário S., Malaspina, Osmar   +3 more
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Prevalence of African DNA RELP alleles in neotropical African honeybees

Archives of Insect Biochemistry and Physiology, 1990
AbstractA few queens of the honeybee, Apis mellifera scutellata, were imported from Africa and released in Brazil in 1957. Progeny of these bees have now largely colonized the American tropics. Their imminent arrival in the United States poses a serious threat to the beekeeping industry and to agriculture dependent on honeybee pollination.
Kasinathan Muralidharan, H. Glenn Hall
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Biochemical and immunochemical comparison of Africanized and European honeybee venoms

Journal of Allergy and Clinical Immunology, 1990
Africanized honeybees (HBs) pose a hazard to both normal and sting-sensitive subjects in certain areas of Central and South America, and it is predicted that they will soon be present in the southern United States as well. Using an electrical stimulation device, we collected Africanized HB venom (AHV) in Venezuela and European HB venom (EHV) in ...
D R, Nelson, A M, Collins, R L, Hellmich, R T, Jones, R M, Helm, D L, Squillace, J W, Yunginger   +6 more
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Africanized honeybees have unique tolerance to Varroa mites

Trends in Parasitology, 2004
WR99210 but does not affect the intrinsic activity of proguanil. Proc. Natl. Acad. Sci. U. S. A. 94, 10931–10936 30 Walter, R. etal. (1991) Pyrimethamine-resistantPlasmodiumfalciparum lack cross-resistance to methotrexate and 2,4-diamino-5-(substituted benzyl) pyrimidines. Parasitol. Res. 77, 346–350 31 Cunningham, R.F. et al.
Stephen J, Martin, Luis M, Medina
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Survival After Massive (>2000) Africanized Honeybee Stings

Archives of Internal Medicine, 1998
We report the clinical case of a man who survived a massive attack of Africanized bees (>2000 bee stings). The man experienced anaphylactic shock and multisystem organ failure (neurologic, hepatic, renal, and hematologic failure). He was treated with administration of dopamine hydrochloride, antihistaminic agents, corticosteroids, fluid and electrolyte
C L, Díaz-Sánchez, A, Lifshitz-Guinzberg, G, Ignacio-Ibarra, J, Halabe-Cherem, A, Quinones-Galvan   +4 more
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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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Massive Africanized honeybee stings in two hair sheep and a mare

Toxicon, 2020
The findings of massive Africanized honeybee stings in two hair sheep and a mare are reported. One sheep died 15 h after attack, and the survivors developed skin necrosis on the sting sites. Pathological evaluation revealed necrosis in the dermis, degeneration of the tubular epithelial cells, and multifocal hemorrhages in heart and spleen.
Henrique C, Veado, Raffaela S, Conceição, Kaique, Nogueira, Tayná Cardim M, Fino, Anahi S, Silva, Marcio B, Castro, Benito, Soto-Blanco, Antonio Carlos Lopes, Câmara   +7 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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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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The Introduction and Diffusion of the African Honeybee in South America

Yearbook of the Association of Pacific Coast Geographers, 1988
In 1956 scientists introduced the African honeybee, Apis mellifera scutellata , into Brazil in an effort to improve honeybee genetic stock in that country. Almost immediately the bee escaped from captivity, hybridized with existing honeybee populations, and began diffusing over the South American continent.
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