Abstract
The role of high temperature resistance in the world-wide cline of Adh and alpha-Gpdh allele frequencies of Drosophila melanogaster was investigated. Experimental strains were used with different combinations of Adh and alpha-Gpdh alleles but with similar genetic background. The survival time of adult males, reared at different pre-adult temperatures, was measured at 35-degrees-C. To investigate the relationship between survival and protein content, triglycerides content and ADH and alpha-GPDH enzyme activity, the latter characters were measured before and after 12 h exposure to 35-degrees-C. Three-way ANOVA of survival at 35-degrees-C showed significant effects of rearing temperature and Adh genotype, interaction between Adh and alpha-Cpdh, interaction between Adh and rearing temperature and interaction between Adh, alpha-Gpdh and rearing temperature, alpha-GPDH enzyme activity did not change significantly. Although protein content, triglycerides content and ADH enzyme activity decreased significantly at 35-degrees-C, no correlation was observed between survival and these traits. It is concluded that the world-wide cline of Adh and alpha-Gpdh allele frequencies cannot simply be explained by the genotypic differences in resistance to high temperature of adult Drosophila melanogaster.
Original language | English |
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Pages (from-to) | 289-297 |
Number of pages | 9 |
Journal | Heredity |
Volume | 68 |
DOIs | |
Publication status | Published - Apr-1992 |
Keywords
- ALCOHOL DEHYDROGENASE
- ALLOZYME POLYMORPHISM
- CLINE
- ALPHA-GLYCEROPHOSPHATE DEHYDROGENASE
- SELECTION, TEMPERATURE STRESS
- ALCOHOL-DEHYDROGENASE LOCUS
- SN-GLYCEROL-3-PHOSPHATE DEHYDROGENASE
- DESICCATION TOLERANCE
- ENZYME POLYMORPHISMS
- ETHANOL
- STRESS
- SELECTION
- POPULATIONS
- LARVAE