Abstract
The allozymic variation at the esterase-6 locus was examined in fourteen samples of natural populations of Drosophila simulans collected in two different localities. The samples were collected from different species of fruits in the two localities and from banana baits located some meters apart from the fruits. The analysis was done by sequential electrophoresis, using varied gel concentrations and buffers. By this technique, we detected 27 alleles at the esterase-6 locus, where only five alleles were detected by the usual method. The results obtained suggest that habitat choice alone may not be a selective factor, but may be selective in combination with other environmental factors.
Full Text
The Full Text of this article is available as a PDF (537.4 KB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Burns J. M., Johnson F. M. Esterase polymorphism in the butterfly Hemiargus isola: stability in a variable environment. Proc Natl Acad Sci U S A. 1971 Jan;68(1):34–37. doi: 10.1073/pnas.68.1.34. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hubby J. L., Lewontin R. C. A molecular approach to the study of genic heterozygosity in natural populations. I. The number of alleles at different loci in Drosophila pseudoobscura. Genetics. 1966 Aug;54(2):577–594. doi: 10.1093/genetics/54.2.577. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kojima K., Smouse P., Yang S., Nair P. S., Brncic D. Isozyme frequency patterns in Drosophila pavani associated with geographical and seasonal variables. Genetics. 1972 Dec;72(4):721–731. doi: 10.1093/genetics/72.4.721. [DOI] [PMC free article] [PubMed] [Google Scholar]
- McDonald J. F., Ayala F. J. Genetic response to environmental heterogeneity. Nature. 1974 Aug 16;250(467):572–574. doi: 10.1038/250572a0. [DOI] [PubMed] [Google Scholar]
- Mulley J. C., James J. W., Barker J. S. Allozyme genotype--environment relationships in natural populations of Drosophila buzzatii. Biochem Genet. 1979 Feb;17(1-2):105–126. doi: 10.1007/BF00484477. [DOI] [PubMed] [Google Scholar]
- POULIK M. D. Starch gel electrophoresis in a discontinous system of buffers. Nature. 1957 Dec 28;180(4600):1477–1479. doi: 10.1038/1801477a0. [DOI] [PubMed] [Google Scholar]
- Prakash S. Gene differences between third-chromosome inversions of Drosophila pseudobscura. Genetics. 1976 Dec;84(4):787–790. doi: 10.1093/genetics/84.4.787. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Schaffer H. E., Johnson F. M. Isozyme allelic frequencies related to selection and gene-flow hypotheses. Genetics. 1974 May;77(1):163–168. doi: 10.1093/genetics/77.1.163. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tsuno K. Esterase gene frequency differences and linkage equilibrium in Drosophila virilis populations from different ecological habitats. Genetics. 1975 Jul;(3):585–594. doi: 10.1093/genetics/80.3.585. [DOI] [PMC free article] [PubMed] [Google Scholar]