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• Intelligenter Einsatz von Ressourcen ein Schlüssel für wirtschaftliche Entwicklung und Beschäftigung

  Um die enormen Potenziale für einen effizienten Einsatz von Ressourcen im produzierenden Gewerbe erschließen zu können, haben das Bundesumweltministerium und der Verein Deutscher Ingenieure e.V. (VDI) ein Kompetenzzentrum für Effizienztechnologien gegründet. Dieses soll insbesondere kleine und m mehr

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• Pesticide exposure in honey bees results in increased levels of the gut pathogen Nosema

  Global pollinator declines have been attributed to habitat destruction, pesticide use, and climate change or some combination of these factors, and managed honey bees, Apis mellifera, are part of worldwide pollinator declines. Here we exposed honey bee colonies during three brood generations to sub- mehr

• The role of tyramine and octopamine in the regulation of reproduction in queenless worker honeybees

  In honeybees, workers under queenless condition compete for reproduction and establish reproductive dominance hierarchy. Ovary activation is generally accompanied by the expression of queen-like pheromones. Biogenic amines (BAs), in particular dopamine, are believed to be involved in this process by mehr

• Cross-species correlation between queen mating numbers and worker ovary sizes suggests kin conflict may influence ovary size evolution in honeybees

  Abstract   During social evolution, the ovary size of reproductively specialized honey bee queens has dramatically increased while their workers have evolved much smaller ovaries. However, worker division of labor and reproductive competition under queenless conditions are influenced by worker o mehr

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