Wild honey bee colonies—both truly wild (in trees and buildings) and simulated wild (in smallhives)—were studied to determine their life-history traits, to see if these traits have changed now that these colonies are infested with Varroa destructor . Most colonies (97%) survive summers, but only 23% of founder (first-year) colonies and 84% of established colonies survive winters. Established colonies have a mean lifespan of 5–6 years and most (87%) have a queen turnover (probably by swarming) each summer. A population model shows that these life-history traits produce a stable population of colonies. Remarkably, the suite of colony life-history traits found in the 2010s (with V. destructor ) matches that found in the 1970s (without V. destructor ). It seems likely that the wild colonies living near Ithaca, NY, possess defenses against V. destructor that are not costly.
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Wir haben verschiedentlich auf die Forschungsarbeiten von Torben Schiffer, ext. wissenschaftlicher Mitarbeiter an der Universität Würzburg unter der Leitung von Prof Jürgen Tautz, hingewiesen. Seit dem 15.4.2019 sind nun die
Von André Wermelinger, Geschäftsführer FreeTheBees Normalerweise liegen grössere Teile des Januars und Februars in Kälte unter einer Schneedecke. Die Natur ruht, der allgemeine Lärm ist durch den Schnee gedämpft, die