1. Anderson, P. R., and Oakeshott, J. G., 1984, Parallel geographical patterns of allozyme variation in two sibling Drosophila species, Nature, Lond.
308:729–731.
2. Barker, J. S. F., and Mulley, J. C., 1976, Isozyme variation in natural populations of Drosophila buzzatii, Evolution
30:213–233.
3. Barker, J. S. F., and Starmer, W. T., eds, 1982, Ecological Genetics and Evolution: The Cactus-Yeast-Drosophila Model System, Academic Press Australia, Sydney.
4. Barker, J. S. F., Starmer, W. T., and Vacek, D. C., 1987, Analysis of spatial and temporal variation in the community structure of yeasts associated with decaying Opuntia cactus, Microb. Ecol.
14:267–276.
5. Barker, J. S. F., East, P. D., Phaff, H. J., and Miranda, M., 1984, The ecology of the yeast flora in necrotic Opuntia cacti and of associated Drosophila in Australia, Microb. Ecol.
10:379–399.