THE EVOLUTIONARY HISTORY OF DROSOPHILA-BUZZATII .25. RANDOM MATING INNATURE

Using allozymes as the genetic probe, data are presented which show th at wild Drosophila buzzatii females and males engaged in copulation ma te at random. Hence, putative inbreeding due to local mating of geneti cally related flies emerging from the patchy distributed substrates, w as not detected. We conclude that individuals raised from a niche disp erse and mate at random with other members of the population, so only one round of drift due to the colonization of suitable and ephemeral b reeding sites is taking place.