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| Registros recuperados: 142 | |
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| Pinto, Fábio de Assis; Souza, Gabriely Köerich; Sanches, Marcia Aparecida; Serrão, José Eduardo. |
| The mite Varroa destructor (Anderson & Truemann 2000) (Acari: Varroidae) is one of the most studied parasites of Apis mellifera, as it causes many losses in apicultural business worldwide. Several research studies have demonstrated distinct levels of virulence of the mite and increased colony mortality rates due to its infestation; however only a few studies report the mite's effects on specific tissues, glands or other organs in bees. In this context, this study was conducted with the aim of studying the parasitic effect of the mite V. destructor on hypopharyngeal glands of Africanized A. mellifera. Mean gland cell areas for bees with and without mite infestations were significantly different. Variations in the number of vesicles and the presence of... |
| Tipo: Article |
Palavras-chave: Apis mellifera; Parasitism; Hypopharyngeal glands; Varroosis; Varroa destructor. |
| Ano: 2011 |
URL: http://hdl.handle.net/2315/272 |
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| González Gómez, Rebeca. |
| Se estudió el efecto del extracto oleoso de neem (A. indica) en el control de V. destructor. La investigación estuvo encaminada a explorar los efectos que causa el neem tanto a V. destructor como a Apis mellifera, donde la colonia de abejas se observó como un superorganismo. En la primera parte de la investigación se corroboraron en laboratorio los efectos de toxicidad y repelencia del neem en el ácaro, observados en estudios previos; se observó que 2.64, 5.28, 10.56 y 21.12% de extracto de neem presentaron alta estabilidad en cuanto al efecto repelente; y 21.12% impidió que 98% de las varroas se posaran sobre pupas de abejas, lo que llevó a 100% de mortalidad de varroa en 72 h. La segunda etapa estuvo orientada a determinar los efectos del neem sobre... |
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Palavras-chave: Azadirachta indica; Apis mellifera; Control alternativo; Abejas; Desarrollo; Alternative control; Honey bees; Development; Doctorado; Entomología y Acarología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/200 |
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| González Gómez, Rebeca. |
| Se estudió el efecto del extracto oleoso de neem (A. indica) en el control de V. destructor. La investigación estuvo encaminada a explorar los efectos que causa el neem tanto a V. destructor como a Apis mellifera, donde la colonia de abejas se observó como un superorganismo. En la primera parte de la investigación se corroboraron en laboratorio los efectos de toxicidad y repelencia del neem en el ácaro, observados en estudios previos; se observó que 2.64, 5.28, 10.56 y 21.12% de extracto de neem presentaron alta estabilidad en cuanto al efecto repelente; y 21.12% impidió que 98% de las varroas se posaran sobre pupas de abejas, lo que llevó a 100% de mortalidad de varroa en 72 h. La segunda etapa estuvo orientada a determinar los efectos del neem sobre... |
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Palavras-chave: Azadirachta indica; Apis mellifera; Control alternativo; Abejas; Desarrollo; Alternative control; Honey bees; Development; Doctorado; Entomología y Acarología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/200 |
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| Padilha,Alessandro Haiduck; Sattler,Aroni; Cobuci,Jaime Araújo; McManus,Concepta Margaret. |
| Heritability and genetic correlations for honey (HP) and propolis production (PP), hygienic behavior (HB), syrupcollection rate (SCR) and percentage of mites on adult bees (PMAB) of a population of Africanized honeybees were estimated. Data from 110 queen bees over three generations were evaluated. Single and multi-trait models were analyzed by Bayesian Inference using MTGSAM. The localization of the hive was significant for SCR and HB and highly significant for PP. Season-year was highly significant only for SCR. The number of frames with bees was significant for HP and PP, including SCR. The heritability estimates were 0.16 for HP, 0.23 for SCR, 0.52 for HB, 0.66 for PP, and 0.13 for PMAB. The genetic correlations were positive among productive traits... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heritability; Genetic correlations; Environmental effects; Apis mellifera. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000200011 |
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| Rother,Débora C.; Souza,Tiago F.; Malaspina,Osmar; Bueno,Odair C.; Silva,Maria de Fátima das G. F. da; Vieira,Paulo C.; Fernandes,João B.. |
| Muitas substâncias de origem vegetal podem ser tóxicas ou apresentar potencial inseticida. Com o objetivo de diminuir a problemática da poluição ambiental alguns estudos vêm tentando substituir os inseticidas artificiais pelos inseticidas botânicos. Ricinus communis (Euphorbiaceae) apresenta uma grande variedade de substâncias sendo a ricinina o principal componente tóxico. Considerando que as abelhas são insetos benéficos por atuarem como agentes polinizadores das plantas, este estudo teve por objetivo avaliar o efeito tóxico da ricinina para as operárias e larvas de Apis mellifera (Linnaeus, 1758) (Hymenoptera, Apidae) e Scaptotrigona postica (Latreille, 1907) (Hymenoptera, Meliponini). Para isso, foram realizados testes de ingestão em operárias... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ricinus communi; Apis mellifera; Scaptotrigona postica; Teste de aplicação tópica; Teste de ingestão. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000100009 |
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| LIMA,P. R. M. DE; BROCHETTO-BRAGA,M. R.; CHAUD-NETTO,J.. |
| Some properties of a Africanized honeybee venom proteases were determined by enzymatic assays in solution, electrophoresis in SDS-PAGE, and gel filtration. Bee venom extracts were obtained by reservoir disruption, selective dialysis (cut off 12 kDa) to eliminate small components, such as the protease inhibitor present in the venom, and then fractionation of the dialyzed extract by gel filtration on a Sephadex G-100 column. The optimal conditions for the caseinolytic assays were pH 9.5, 2-hour digestion at 37 °C, and 1% casein concentration. The proteolytic activity was also determined by electrophoresis in SDS-PAGE with co-polymerized gelatin with three major bands of 66.0, 41.6, and 25.1 kDa. A principal serine-protease-like mechanism was revealed in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Venom; Africanized bee; Apis mellifera; Proteolytic activity; Gel filtration chromatography. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000100004 |
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| ABREU,R.M.M.; MORAES,R.L.M. SILVA de; MALASPINA,O.. |
| This paper analyzes the summer and winter total protein content of 7, 14, 21, 28, 35, and 40-day old Apis mellifera L. worker venom glands before (control) and 24 and 96 hours after applying electrical shocks for venom extraction (experimental). During venom extraction, 7-day old workers responded more slowly and weakly to electrical shocks. This response intensifies with age, so that the workers approaching 20 days old respond faster and more aggressively to the shocks. Statistical analysis, using the non-parametric Wilcoxon and Kruskall-Wallis tests and complemented by the Jonckheere test, showed that the protein content varied from one age to another in the experimental group, which was well distinguishable from the values in the control Group in summer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bees; Histology; Protein content; Summer; Winter; Electrical shock; Venom gland; Apis mellifera. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000100006 |
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| COSTA,H.; TALORA,D. C.; PALMA,M.S.; CHAUD-NETTO,J.. |
| The effect of pheromones and their chemical analogues in honeybee alarm behaviors was studied in observation boxes. Defensive behaviors, as follows: a) attraction to scent source, b) elevation of wings in "V", c) abdomen elevation, d) abdomen elevation and pumping and e) first leg pair elevation had been temporarily registered when the following compounds were presented: isoamyl alcohol, octyl alcohol, benzyl alcohol, n-butyl acetate, n-octyl acetate, isopentyl acetate, benzyl acetate and 2-heptanone. The results were as follows: 1. the bees elicited some characteristic behaviors when chemical alarm messages were presented, 2. agression (stinging) was not completed with any compound tested, probably because there was not a target (visual stimulus), 3. in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apis mellifera; Defensive behavior; Alarm behaviors; Pheromones; Hybrid honey bees; Chemical communication. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100005 |
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| FERNANDES JR.,A.; LEOMIL,L.; FERNANDES,A.A.H.; SFORCIN,J.M.. |
| This study investigated the antibacterial activity of propolis produced by A. mellifera and Brazilian stingless bees, called "meliponíneos". Susceptibility tests to ethanolic extracts of propolis (EEP) were performed using bacterial strains (Staphylococcus aureus, Enterococcus sp, and Escherichia coli) isolated from human infections. Dilution of EEP in agar (%v/v) was used for determination of minimal inhibitory concentration (MIC). The stingless bee species (and common names) were: Nannotrigona testaceicornis ("Iraí"), Tetragonisca angustula ("Jataí"), Trigona spinipes ("Arapuá"), Scaptotrigona sp ("Tiúba"), Partamona sp ("Cupira"), Melipona scutellaris ("Uruçu"), Melipona sp ("Manduri"), and Melipona mandaçaia ("Mandaçaia"). EEP inhibitory efficiencies... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethanolic extract of propolis; Apis mellifera; Brazilian stingless bees; S. aureus; E. coli; Enterococcus sp. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302001000200003 |
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| PEREIRA,P.C.M.; BARRAVIERA,B.; BURINI,R.C.; SOARES,A.M.V.C.; BERTANI,M.A.. |
| Honey, royal jelly, propolis, materials produced and/or gathered by Apis mellifera honeybees have been used as food and medication for centuries(6,7,8). Although extensively used, honeybee products have become a matter of interest and controversy for years. Honey, well known as healthy and natural food, has shown therapeutic properties in the treatment of digestive, respiratory, cardiac and rheumatic disorders, among others(4). Several studies have reported honey's immunological, antibacterial, antiinflammatory, antipyretic properties besides its importance in terms of energy intake(3,5). Furthermore, honey has proved to possesses wound healing and analgesic actions(1,2). Honey and propolis are also known to be effective in the treatment of respiratory... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Honey; Nutritional supplement; Apis mellifera; Paracoccidioidomycosis; Tuberculosis. |
| Ano: 1995 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301995000200006 |
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| Registros recuperados: 142 | |
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