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Effect of cycloheximide on different stages of Drosophila melanogaster
Abstract:
Cycloheximide, an antibiotic inhibiting protein synthesis, exerted a toxic effect on different developmental stages egg, larva and adult of Drosophila melanogaster. At the egg stage the early embryos were most sensitive. With larvae, a strong decrease in viability was found, with no sex difference. In adults, there was a dose-effect relationship, mortality increasing with concentration. At 10 and 15 mM, males were more sensitive than females. There were consistent differences between the control and cycloheximide-fed females in respect of the average number of eggs deposited and offspring produced.
Insights
Cycloheximide, an antibiotic that inhibits protein synthesis, is toxic to Drosophila melanogaster at all life stages. Early embryos were most sensitive, while larvae showed reduced viability and adults exhibited dose-dependent mortality, with males being more susceptible at higher concentrations.
Area of Science:
- * Molecular Biology and Toxicology
- * Insect Toxicology and Developmental Biology
Background:
- * Cycloheximide is a potent antibiotic known to inhibit protein synthesis.
- * Understanding its toxicological effects across different life stages is crucial for biological research.
Purpose of the Study:
- * To investigate the toxic effects of cycloheximide on various developmental stages of Drosophila melanogaster.
- * To determine dose-response relationships and sex-specific sensitivities in adult fruit flies.
Main Methods:
- * Exposure of Drosophila melanogaster to cycloheximide at egg, larval, and adult stages.
- * Assessment of viability, mortality rates, and reproductive parameters (egg deposition, offspring production).
Main Results:
- * Cycloheximide exhibited toxicity across all tested developmental stages (egg, larva, adult).
- * Early embryos were the most sensitive stage; larval viability significantly decreased without sex difference.
- * Adult mortality showed a dose-dependent increase, with males being more sensitive than females at 10 and 15 mM. Reproductive output was also affected.
Conclusions:
- * Cycloheximide poses a significant toxic risk to Drosophila melanogaster throughout its life cycle.
- * Developmental stage and sex influence sensitivity to cycloheximide toxicity.
- * Findings highlight the impact of protein synthesis inhibition on insect development and reproduction.