Authors: Reem Alajmi, Rewaida Abdel-Gaber, Loloa Alfozana
The honey bee Apis mellifera is of major importance for the world’s agriculture and is also suitable for environmental monitoring. It includes several recognized subspecies distinguished by using morphological and morphometric variants. Here, 200 adult worker Apis mellifera honey bees were collected from Hail region, Saudi Arabia. Mitochondrial 16S .. Read More»
Authors: D.A. De Souza1, M.A.F. Bezzera-Laure1, T.M. Francoy2 and L.S. Gon�§alves3,4
There has been much speculation about which phenotypic traits serve as reliable indicators of productivity in queen honeybees (Apis mellifera). To investigate the predictive value of queen body weight on colony development and quality, we compared colonies in which queens weighed less than 180 mg to those in which queens weighed more than 200 mg. Both gro.. Read More»
Authors: M.R.C. Issa1, V.L.C. Figueiredo2, D. De Jong1, C.H. Sakamoto1 and Z.L.P. Sim�µes2
We developed a rapid method for extraction of DNA from honey bees, Apis mellifera, and from the parasitic bee mite, Varroa destructor. The advantages include fast processing and low toxicity of the substances that are utilized. We used lysis buffer with nonionic detergents to lyse cell walls and proteinase K to digest proteins. We tested whole thorax, tho.. Read More»
Authors: F. ��zdil and F. �°lhan
Mitochondrial DNA sequence variation can be used to infer honey bee evolutionary relationships. We examined DNA sequence diversity in the cytochrome C oxidase I (COI or Cox1) gene segment of the mitochondrial genome in 112 samples of Apis mellifera from 15 different populations in Turkey. Six novel haplotypes were found for th.. Read More»
Authors: T.M. Francoy L.S. Gon�§alves D. De Jong
African honey bees, introduced to Brazil in 1956, rapidly dominated the previously introduced European subspecies. To better understand how hybridization between these different types of bees proceeded, we made geometric morphometric analyses of the wing venation patterns of specimens resulting from crosses made between Africanized honey bees (predominantly .. Read More»
Authors: F.A. Cappelari, A.P. Turcatto, M.M. Morais and D. De Jong
The superiority of Africanized over European honey bees in tropical and subtropical regions of the New World is both well documented and poorly understood. As part of an effort to try to understand the process by which the displacement of European bees occurred, we examined the ability of these two types of bees and of hybrids.. Read More»
Authors: I.C. Silva, D. Message, C.D. Cruz, L.A.O. Campos and M.J. Sousa-Majer
We developed a method for rearing larvae of Africanized bees under laboratory conditions to determine the amount of diet needed during larval development to obtain a worker bee. We started with larvae 18-24 h old, which were transferred to polyethylene cell cups and fed for five days. We found that the amount of diet needed fo.. Read More»
Authors: C.A. Medina-Flores, E. Guzm�¡n-Novoa, M.M. Hamiduzzaman, C.F. Ar�©chiga-Flores and M.A. L�³pez-Carlos
Honey bee (Apis mellifera) colonies of African and European descent were compared for levels of Varroa destructor infestation in 3 different ecological regions in Mexico. The 300 colonies that were studied were located in subtropical, temperate sub-humid, and temperate dry climates. The morphotype and mitotyp.. Read More»
Authors: T.M. Francoy, D. Wittmann, V. Steinhage, M. Drauschke, S. M�¼ller, D.R. Cunha, A.M. Nascimento, V.L.C. Figueiredo, Z.L.P. Sim�µes, D. De Jong, M.C. Arias and L.S. Gon�§alves
Though the replacement of European bees by Africanized honey bees in tropical America has attracted considerable attention, little is known about the temporal changes in morphological and genetic characteristics in these bee populations. We examined the changes in the morphometric and genetic profiles of an Africanized honey b.. Read More»
Authors: K.P. Gramacho and L.S. Gon�§alves
We examined the sequence, order or steps of hygienic behavior (HB) from pin-killed pupae until the removal of them by the bees. We conducted our study with four colonies of Apis mellifera carnica in Germany and made four repetitions. The pin-killing method was used for evaluation of the HB of bees. The data were collected ever.. Read More»