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The α-glycerophosphate dehydrogenase (α-gpdh) polymorphism inDrosophila melanogaster:adult survival under temperature stress

✍ Scribed by Evelyn Schenfeld; S. W. McKechnie

Publisher: Springer
Year: 1979
Tongue: English
Weight: 271 KB
Volume: 54
Category: Article
ISSN: 0040-5752
DOI: 10.1007/bf00267713

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✦ Synopsis

As a test of the hypothesis that adult temperature stress is an important component of natural selection maintaining the α-gpdh polymorphism, we have looked for differential survival among genotypes subjected to (i) heat shock and (ii) cold shock. Factorial ANOVAR, taking account of genotype, sex and temperature-stress indicated that genotype did not contribute to the variance of survival proportion per vial. We have not therefore found evidence to support our hypothesis. Incidental to the above was a significant sex-temperature interaction. Thus, adult females showed higher survival than males under heat stress, while under cold stress, there was no indication of a survival difference between the sexes.

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✍ Stephen Miller; Robert W. Pearcy; Edward Berger 📂 Article 📅 1975 🏛 Springer 🌐 English ⚖ 602 KB

A biochemical comparison was made between ~-glycerophosphate dehydrogenase allozymes from Drosophila melanogaster. Enzymes extracted from the three major genotypes were indistinguishable in terms of their pH optima and thermal stabilities. Distinctive differences were observed for three parameters;