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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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• Out with the garbage: the parasitic strategy of the mantisfly Plega hagenella mass-infesting colonies of the eusocial bee Melipona subnitida in northeastern Brazil

  Between April and June of 2012 mantisflies (Plega hagenella) were found to be extensively parasitizing the nests of two groups of managed colonzies of eusocial stingless bees (Melipona subnitida) in the semi-arid region of northeastern Brazil. The mantisfly larvae developed inside closed brood cells mehr

• Individual lifetime pollen and nectar foraging preferences in bumble bees

  Foraging specialization plays an important role in the ability of social insects to efficiently allocate labor. However, relatively little is known about the degree to which individual bumble bees specialize on collecting nectar or pollen, when such preferences manifest, and if individuals can alter mehr

• Large pollen loads of a South African asclepiad do not interfere with the foraging behaviour or efficiency of pollinating honey bees

  The pollen of asclepiads (Asclepiadoideae, Apocynaceae) and most orchids (Orchidaceae) are packaged as large aggregations known as pollinaria that are removed as entire units by pollinators. In some instances, individual pollinators may accumulate large loads of these pollinaria. We found that the p mehr

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