Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Brésil → 2021 → Comportamento higiênico como resposta ao ácaro varroa destructor em abelhas africanizadas (apis mellifera) no semiárido brasileiro

Universidade Federal Rural do Semi-Árido (UFERSA) 2021

Comportamento higiênico como resposta ao ácaro varroa destructor em abelhas africanizadas (apis mellifera) no semiárido brasileiro

Silva, Leandro Alves da

Titre : Comportamento higiênico como resposta ao ácaro varroa destructor em abelhas africanizadas (apis mellifera) no semiárido brasileiro

Auteur : Silva, Leandro Alves da

Université de soutenance : Universidade Federal Rural do Semi-Árido (UFERSA)

Grade : Mestre em Produção Animal. 2021

Résumé partiel
The health of bees is a topic discussed worldwide, as it is a critical point in the production chain and of fundamental importance for the maintenance of colonies and beekeeping production. The Varroa destructor mite is considered one of the most lethal pests of the bees today and alternative mechanisms for controlling this parasite, without the use of chemical treatments have been studied. Even present in all Brazilian states, V. destructor has not caused the same harmful effects as seen in other countries due to the tolerance of the Africanized bee, the life cycle of the bees, the hygienic behavior sensitive to the mite, the grooming, climate among other factors. Hygienic behavior is considered one of the main defense mechanisms for population control of V. destructor, and the selection of hygienic colonies has been carried out with this objective in mind. With that, in the present work we tried to evaluate the hygienic behavior as a response to this parasite in Africanized bees in the Brazilian semiarid region and, for that, we subdivided the work in 4 stages, here called chapters. In chapter 1 a theoretical fundamentation on the subject was made, in chapter 2 a comparative study of two methods to evaluation of hygienic behavior was carried out, the method of freezing in brood the freezer (FM) and the pin-killing brood method (PM) of the brood with a entomological pin, in order to measure the efficiency of these methods in the ability to remove the brood artificially killed by bees, in 24 and 48 hours after applying them, and based on these results, adopt the best method in the other experiments. A completely randomized design was used, with 4 replications, 17 colonies and 2 treatments. Data collection for this experiment took place between October and December 2019. In chapter 3, the hygienic behavior sensitive to V. destructor (VSH) was evaluated at different phenotypic levels of the general hygienic behavior in Africanized bees (A. mellifera) and its relationship with the rate of infestation in adult bees and brood, moreover, the rate of infestation was correlated with the area of brood operculated.

Mots Clés  : Acaricidas CCD Sanidade das abelhas Varroatose VSH Acaricides CCD Health of the bees Varroatosis VSH

Présentation

Version intégrale (3,5 Mb)

Page publiée le 16 décembre 2021