Author(s):

YeÅŸim Koç

Abstract: This study was carried out to determine the effect of temperature on the preadult developmental time and fecundity of Drosophila melanogaster at 20, 23, 26 and 32 °C. Studies were carried out under the laboratory conditions at twelve hours dark,twelve hours light photoperiod regime and % 60 ± 5 relative humidity with four temperature (20, 23, 26 and 32 °C). The composition of the food type ( named as solid food) consisted of water 74.2 cc., molases 13.5 gr., corn flour 10 gr and propiyonic acid (0.7 cc). Preadult developmental time and female fecundity for each trial was determined. Fecundity was highest when reared at 26 °C. Total preadult developmental time at 20,23,26 and 32 °C was 19,16,10and 13 days, respectively. Developmental time was highest reared at 20 °C. Results from this study are show that changing the temperature is important. Drosophila is a widely used and well suited model system for studying genetics and biology. Therefore, we initiated a study to quantify the effects of temperatures on developmental time and fecundity of D. melanogaster.

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