Transcription factor "ultraspiracle" influences both behavioural maturation and the expression of maturation-related genes in honey bees The transcription factor ultraspiracle influences honey bee social behavior and behavior-related gene expression,
PLoS Genetics
, Volume 8, Number 3, p.e1002596, (2012)
[1].

Varroa destructor in Argentina represent Korean haplotype Genetic structure of Varroa destructor populations infesting Apis mellifera colonies in Argentina,
Experimental and Applied Acarology
, Volume 56, p.309–318, (2012)
[2].

In Africanized honey bees percentage of mites producing viable offspring in drone and worker cells was 64.8% and 37.6%, respectively Reproduction of Varroa destructor and offspring mortality in worker and drone brood cells of Africanized honey bees.,
Experimental and Applied Acarology
, Volume 56, Issue 4, Number 4, p.297-307, (2012)
[3].

Larvae and newly emerged workers contain few or no bacteria. In older workers communities of bacteria differ between midgut, ileum, and rectum Establishment of characteristic gut bacteria during development of the honey bee worker,
Applied and Environmental Microbiology
, Volume 78, p.2830-2840, (2012)
[4].

Laying workers produce more pheromonal components (HOB, 9-ODA, HVA, 9-HDA, 10-HDAA and 10-HDA) than nonlaying workers The pheromones of laying workers in two honeybee sister species: Apis cerana and Apis mellifera,
Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology
, Volume 198, p.319-323, (2012)
[5].

Larvae and adult workers do not produce a humoral immune reaction upon artificial infection with acute bee paralysis virus Infection of honey bees with acute bee paralysis virus does not trigger humoral or cellular immune responses.,
Archives of Virology
, Volume 157, Issue 4, Number 4, p.689-702, (2012)
[6].

Colonies infected with Ascophaera apis collect more propolis. Colonies experimentally enriched with propolis had decreased infection intensities of this fungal parasite Increased resin collection after parasite challenge: a case of self-medication in honey bees?,
PLoS ONE
, Volume 7, Number 3, p.e34601, (2012)
[7].
See also:
http://www.sciencedaily.com/releases/2012/03/120330111027.htm

Dance followers can use the directional information of round dances Do honeybees use the directional information in round dances to find nearby food sources?,
Animal Behaviour
, Volume 83, p.1319-1324, (2012)
[8].

There are attempts to increase genetic diversity of honey bees in USA Honey bee genetic diversity and breeding - towards the reintroduction of European germplasm,
American Bee Journal
, Volume 152, Number 2, p.155-158, (2012)
[9].