Reliability of an island mating apiary under routine management

Holger Scharpenberg, Peter Neumann, Jacob P. van Praagh, Robin F.A. Moritz 1 Institut fur Zoologie, Martin-Luther-Universitat Halle-Wittenberg, Hoher Weg 4, D-06099 Halle (Saale), Germany. 2 Department of Zoology and Entomology, Rhodes University, Grahamstown 6140, South Africa. 3 LAVES-Institut fur Bienenkunde Celle, Herzogin-Eleonore-Allee 5, D-29221 Celle, Germany. 4 Swiss Bee Research Centre, Agroscope Liebefeld-Posieux Research Station, Schwarzenburgstrasse 161, CH-3003 Bern, Switzerland.