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Parasitic Effects of Varroa destructor (Acari: Varroidae) on Hypopharyngeal Glands of Africanized Apis mellifera (Hymenoptera: Apidae) Ciências Agrárias
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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Uncapping activity of Apis mellifera L. (Hymenoptera: Apidae) towards worker brood cells infested with the mite Varroa destructor Anderson & Treuman (Mesostigmata: Varroidae) Neotropical Entomology
Moretto,Geraldo; Guerra Jr.,José C.V.; Bittencourt,Carolina V..
Varroosis, a disease caused by the mite Varroa destructor Anderson and Treuman has killed hundreds of thousands of Apis mellifera L. colonies in various parts of the world. Nevertheless, the damage caused by this mite varies with the type of bee and climate conditions. Varroa causes little damage to Africanized bee colonies in Brazil, as the infestation rates are relatively stable and low. We evaluated the hygienic behavior (uncapping and removal of brood) of highly hygienic Africanized bees using combs with worker brood cells infested (naturally) and no infested with V. destructor. The daily uncapping rate, measured in eight colonies during six days, was 3.5 fold higher in the combs infested with varroa compared to no infested combs. The results show that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hygienic behavior; Varroosis; Natural infestation; Africanized honey bee.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000300002
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