Morphometric and genetic characterization as tools for selection of (Hymenoptera: Apidae) stocks in an area of natural hybridization in Argentina.

Beekeepers around the world select bees' characteristics that facilitate and favor production. In regions where hybridization among lineages is taking place, this selection is a challenge, given that these regions are "natural laboratories", where the action of evolutionary processes of a population or species occurs in real time. A natural honeybee () hybrid zone exists in Argentina between 28° and 35° South, where Africanized (AHB) and European (EHB) populations converge.

Gut Bacteriome Analysis of sp. 1 During the Early Steps of Laboratory Colonization.

Microbial communities associated to insect species are involved in essential biological functions such as host nutrition, reproduction and survivability. Main factors have been described as modulators of gut bacterial community, such as diet, habit, developmental stage and taxonomy of the host. The present work focuses on the complex changes that gut microbial communities go through when wild insects are introduced to artificial rearing conditions.

Genetic variation and heteroplasmy of Varroa destructor inferred from ND4 mtDNA sequences.

Varroa destructor, a parasitic mite of the western honey bee, Apis mellifera L., is a serious threat to colonies and beekeeping worldwide. Population genetics studies of the mite have provided information on two mitochondrial haplotypes infecting honey bee colonies, named K and J (after Korea and Japan, respectively, where they were originally identified).

Distribution and prevalence of Nosema apis and N. ceranae in temperate and subtropical eco-regions of Argentina.

A total of 361 colonies from 59 apiaries located in two temperate and three subtropical eco-regions were examined during the post-harvest period to determine distribution and prevalence of Nosema spp. Apiaries from subtropical eco-regions showed a lower spore count than those from temperate eco-regions. Pure N.