Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae) is native to East Asia and invasive on the European and American continents. The first records in both Europe and the United States were in 2008. Since that year, it has widely moved across these continents. As D. suzukii females lay eggs in healthy ripening fruits of several species, particularly in small soft fruits and berries, the species causes agricultural damage. The soft thin-skinned fruit pest, identified as D. suzukii, has been found in Erzurum, Turkey, where damaged strawberry crops were observed and cultured in the middle of August and September 2014. Initially, 2 adults, 3 pupae, and several larvae were observed. Emergence of male and female adults continued for 10 more days. Here we report the first finding of D. suzukii in Turkey.
Sodium nitrite (NaNO2) and sodium nitrate (NaNO3) are used as food preservatives. In addition to teratogenic, mutagenic, and carcinogenic effects, these products are also thought to have endocrine disrupting effects. This study aimed to investigate the effects of sodium nitrite (NaNO2) and sodium nitrate (NaNO3) on the development of Drosophila melanogaster. Third instar larvae of Canton S strain (wild type) were treated to 25 mM, 50 mM, 75 mM NaNO2, and NaNO3 for 6 hours. The pupation and maturation percentages and times were determined. There was no significant difference in the percentage of pupation and maturation compared to the control group (p>0.05). However, 50 and 75 mM NaNO2 exposures caused developmental delay in both the mean pupation and the mean maturation times (p<0.05). Additionally, it was found that mean maturation time was delayed with 50 and 75 mM NaNO3 exposures (p<0.05).
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