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.
Einreichen unerwünschter Nebenwirkungen bei Swissmedic Wie werden unerwünschte Nebenwirkungen von Bienenbehandlungsmitteln bei Swissmedic eingereicht? Bis heute hat ausser FreeTheBees noch kein einziger Imker eine Meldung zu den allseits bekannten und
Golden ratio in the elliptical honeycomb The honeybee comb, which is highly similar among honeybee species, is a mass of six–sided cells made by honeybees. It contains the brood, the
Schwächen wir unsere Bienen durch falsche Haltung? Ist von artgerechter Tierhaltung die Rede, geht es in der Regel um Schweine, Rinder und Geflügel. Aber wie sieht die bei den Bienen