ZitatAlles anzeigenThe results of this study clearly show that coumaphos should not be used in
colonies where drones are produced. Compared to controls and other miticide treatments
sperm viability of drones exposed to coumaphos was significantly lower initially and
continued the trend through the 6 week sampling period. It is possible that extreme
viability decreases observed in spermatozoa stored from coumaphos exposed drones
could affect the performance of queens if mated with these drones. Queen performance
could drastically decline 6 weeks after insemination or mating, leading to queen failure,
and thus partially explain the current problems associated with maintaining productive
queens in colonies.
aus: http://scholar.lib.vt.edu/theses/availab…ed/lmburley.pdf