Abstract
SummaryAltogether 96 queens were inseminated instrumentally with 8 mm3 of semen, and placed in queenless colonies, protected in various ways: in a screened cage without or with workers; in a cage or isolator provided with queen excluder, permitting free access of workers to the queens. The queens were killed 48 h after insemination, the oviducts were examined for presence of semen, and the number of spermatozoa in the spermatheca counted. The least satisfactory result, with the queen in a screened cage without workers, gave 3·002 million spermatozoa in the spermatheca; the best, when the queen was in a queen-excluder isolator, gave 5·256 million spermatozoa. So the second method gave a 75% increase in the number of spermatozoa that migrated into queen's spermatheca, more than can be gained by a second insemination.It is recommended that the inseminated queen should be released on a comb under a queen-excluder isolator, which remains in position until the queen starts to lay eggs.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
