ESTIMATION OF THE NUMBER OF SEX ALLELES AND QUEEN MATINGS FROM DIPLOID MALE FREQUENCIES IN A POPULATION OF APIS MELLIFERA

1 Division of Biological Sciences, The University of Michigan, Ann Arbor, Michigan 48109
2 Department of Statistics, The University of Michigan, Ann Arbor, Michigan 48109
3 Instituto Nacional de Pesquisas da Amazonia, P.O. Box 478, 69.000 Manaus, Amazonas, Brasil
4 Depto. de Genetica, Faculdade de Medicina de Ribeiramacro Preto, Universidad de Sao Paulo, 14.000 S.P., Brasil

The distribution of diploid males in a population of Apis mellifera was obtained by direct examination of the sexual phenotypes of the larvae. Using these data, estimates are derived for the number of sex alleles and the number of matings undergone by the queen. The number of sex alleles is estimated to be 18.9. The estimate is larger than previous ones, which have ranged between 10 and 12. However, the increase in the number of sex alleles can be explained by the large effective population number for our data. The best estimator of the number of matings by a queen is a maximum likelihood type that assumes a prior distribution on the number of matings. For the data presented here, this estimate is 17.3. This estimate is compared to others in the literature obtained by different approaches.

Submitted on January 17, 1977
Revised on March 14, 1977




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