Genetics, Vol. 163, 1193-1199, March 2003, Copyright © 2003

Bayesian Sperm Competition Estimates

Beatrix Jonesa and Andrew G. Clarkb
a Department of Statistics, Penn State University, University Park, Pennsylvania 16802
b Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853

Corresponding author: Beatrix Jones, Department of Statistics, Penn State University, University Park, PA 16802., trix{at}stat.psu.edu (E-mail)

Communicating editor: G. CHURCHILL

We introduce a Bayesian method for estimating parameters for a model of multiple mating and sperm displacement from genotype counts of brood-structured data. The model is initially targeted for Drosophila melanogaster, but is easily adapted to other organisms. The method is appropriate for use with field studies where the number of mates and the genotypes of the mates cannot be controlled, but where unlinked markers have been collected for a set of females and a sample of their offspring. Advantages over previous approaches include full use of multilocus information and the ability to cope appropriately with missing data and ambiguities about which alleles are maternally vs. paternally inherited. The advantages of including X-linked markers are also demonstrated.




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