THE DIPLOID DRONE OF APIS CERANA JAPONICA AND ITS CHROMOSOMES
HIDEHIRO HOSHIBA, ICHIJI OKADA AND AKIO KUSANAGI
Diploid drones were produced from a sibling-mated queen of A. cerana japonica and reared in an incubator on royal jelly from A. mellifera. The haploid chromosome complement of A. cerana japonica consisted of 8 metacentrics and 8 submetacentrics. The 32 chromosomes of diploid drones are shown in a photomicrograph. Sex determination in A. c. japonica is similar to that in A. mellifera.