Helaas alleen een verwijsing:ErikS schreef:hello, heb je dat onderzoek of een verwijzing?
Aumeier P., Kirchner W.H., Liebig G., 2006. Topsy-turvy brood combs – Impact on population dynamics of honey bees (Apis mellifera L.) and Varroa destructor. In: EurBee, Proceedings of the Second European Conference of Pidology 2006, p. 46.
En een abstract vanaf http://www.eurbee.org/topics.html:
TOPSY-TURVY BROOD COMBS -- IMPACT ON POPULATION DYNAMICS OF HONEY BEES (APIS MELLIFERA L.) AND VARROA DESTRUCTOR
* P. Aumeier, Ruhr-University of Bochum, Faculty of Biology, Germany, Pia.Aumeier©rub.de
* WH. Kirchner, G. Liebig, University of Hohenheim, Bee research institute, Germany
Since 2003 the Kónya rotating-broodframe beehive (http://www.anivet.hu) is advertised as a method of augmenting the honey yield, preventing bee colonies from swarming and of Varroa destructor control.
In a triennial study we investigated the effect of unnatural movements of brood combs by
1) weekly rotating all brood combs of 6 colonies during the swarm season,
2) daily manipulating brood combs out of 8 colonies on three different ways:
- control = comb never touched,
- rotated = comb rotated 180dm
- vertically, shaken = comb hit on the ground three times with 40-50g,
3) using the replica of a rotating-broodframe beehive for one season.
Weekly rotation of brood combs neither influenced the population dynamics of honey bees or Varroa-mites nor altered the honey yield. However, in contrast to control colonies most test colonies could be prevented from swarming as weekly rotating causes elimination of swarm cells. Daily rotating or shaking of brood cells did neither affect fertility (93-100%) nor fecundity (2.6-3.0) of reproductive mites or mortality of mite offspring in the brood cells. Independently of the type of manipulation[,] both types of mates were only present in 11-43% of single-infested cells shortly before hatching of the young bee. The mites’ orientation in the brood cell solely seems to be impeded in terms of the position of the fecal accumulation, which was randomly distributed only in rotated cells. A colony kept in the rotating-broodframe beehive died from extremely high Varroa-infestation after one season. Thus, we can not confirm any effect of unnatural movements of brood combs on developing bees or reproductive Varroa-mites, respectively.
Dus, het was maar een kleine onderzoek op één plaats in 2003-2006 met minder dan 20 volken. De abstract gebruikt een heel raar type Engels en ik heb moeite met begrijpen van bepaalde zinnen erin.