Numbers of spermatozoa in spermathecae of queens aged 0 to 3 years reared in Beaverlodge, Alberta
Tibor I. Szabo And Diane T. Heikel
Queen honeybees (Apis mellifera) were reared under optimal conditions between 1982 and 1985. Mean weight of queens at emergence was 213 ± 2.02 mg. At initiation of oviposition (designated 0 years) and after 1, 2 and 3 years in honey producing colonies, mean numbers of spermatozoa in spermathecae were 9.77 ± 0.79, 7.63 ± 0.85, 5.57 ± 0.64 and 2.08 ± 0.62 million, respectively; numbers declined logarithmically with age of the queen. Annual requeening of colonies may be unnecessary, if efforts are made to produce queens of the highest quality.
Spermatozoa, Queen rearing, Fertility, mean weight