Selection at the alcohol dehydrogenase locus of Drosophila melanogaster: Effects of ethanol and temperature |
| |
Authors: | Charles L Vigue Pierre A Weisgram Erik Rosenthal |
| |
Institution: | (1) Departments of Bilogy and Mathematics, The University of New Haven, 06516 West Haven, Connecticut |
| |
Abstract: | Drosophila melanogaster larvae were subjected to 10 generations of selection on 6% ethanol at 17, 25, and 30°C. For each temperature there was a significant (P<0.01) increase in the frequency of the Adh isoallele. Controls with no ethanol showed no change in the frequency of the Adh
F isoallele. Larvae subjected to stronger selection on 8% ethanol confirmed the results. When adults of various ages were subjected to 16 and 32°C, the ADHF isoenzyme retained its twofold advantage in activity over ADHS regardless of the temperature. The same result was obtained with larvae at 16 and 35°C. Although some effect of temperature was demonstrated, it was concluded that the effect was not strong enough for temperature to be a selective factor under the conditions studied. However, ethanol is a strong selective factor for laboratory populations. |
| |
Keywords: | alcohol dehydrogenase Drosophila selection ethanol temperature |
本文献已被 SpringerLink 等数据库收录! |