| Autor: |
Heinstra, Pieter W H, Scharloo, Willem, Thörig, George E W |
| Zdroj: |
Genetics; September 1987, Vol. 117 Issue: 1 p75-84, 10p |
| Abstrakt: |
This study deals with biochemical and metabolic-physiological aspects of the relationship between variation in in vivoalcohol dehydrogenase activity and fitness in larvae homozygous for the alleles Adh71k, AdhF, AdhS, of Drosophila melanogaster, and for the common Adhallele of Drosophila simulans. The Adhgenotypes differ in the maximum oxidation rates of propan-2-ol into acetone in vivo. There are smaller differences between the Adhgenotypes in rates of ethanol elimination. Rates of accumulation of ethanol in vivoare negatively associated with larval-to-adult survival of the Adhgenotypes. The rank order of the maximum rates of the ADHs in elimination of propan-2-ol, as well as ethanol, is ADH-71k > ADH-F > ADH-S- > simulans-ADH. The ratio of this maximum rate to ADH quantity reveals the rank order of ADH-S > ADH-F > ADH-71k > simulans-ADH, suggesting a compensation for allozymic efficiency by the ADH quantity in D. melanogaster.—Our findings show that natural selection may act on the Adhpolymorphism in larvae via differences in rates of alcohol metabolism. |
| Databáze: |
Supplemental Index |
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