Effect of environmental conditionsions on some biological aspects of Drosophila melanogaster Meigen ( Diptera : Drosophilidae ) collected from Saidiya and Tuwaitha regions in Baghdad

Ahmed Al-Tameel, Ayad; Ahmed Mahmood, Imad; Ali Al- Habeeb, Huda

	Effect of environmental conditionsions on some biological aspects of Drosophila melanogaster Meigen ( Diptera : Drosophilidae ) collected from Saidiya and Tuwaitha regions in Baghdad
Baghdad Science Journal
Article 1, Volume 8, Issue 1, 2011, Pages 222-228
Authors
Ayad Ahmed Al-Tameel; Imad Ahmed Mahmood; Huda Ali Al- Habeeb
Abstract
The wild populations of the vinegar fly Drosophila melanogaster Meigen from two regions in Baghdad , Saidiya and Tuwaitha were selected for this study to investigating the frequency of the dominant lethality , this parameter was investigated through fecundity and egg hatchability rate which considered as main indicator for the presence of mutation . The results showed that fecundity rate in Saidiya increased with time , so the lowest rate was 65.5 eggs per female in November and the highest was 87.4 eggs in May , the same results was observed for Tuwaitha except a significantly decrease in fecundity rate that was observed in May which was 42.7 eggs , as well as another significant differences between the two regions was observed in March when the rate was in Saidiya more than Tuwaitha . The hatchability rate increased gradually in Saidiya until March which equal 69.3% , then decreased significantly in May and reached 48.6% , meanwhile , in Tuwaitha the highest hatchability rate was 67.6% in November, then it was decreased until March , while in May it decreased significantly to 24.5% . So , the hatchability rate decreased significantly in Tuwaitha if compared with that of Saidiya in March and May , before that , the opposite was in November and there isn’t any significant differences between the two regions in January .
Keywords
Drosophila

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