10 GHz EMF can cause developmental delay and decrease the number of offspring in D. melanogaster.

Bisphenol A (BPA), 4-nonylphenol (4-NP) and 4-tert-octylphenol (4-tert-OP) are the endocrine disrupting chemicals (EDCs) that has been shown to exert both toxic and biological effects on living organisms. The present study investigated effects of environmentally relevant concentrations of BPA, 4-NP and 4-tert-OP (0.1, 1 and 10 mg/L) on the fecundity of fruit fly Drosophila melanogaster. In the all exposure groups of BPA, 4-NP and 4-tert-OP, it was found a statistically significant decrease in mean fecundity as compared to the control groups (p < 0.05).

No abstract

Resveratrol is a chemical that attracts attention due to its antioxidative, anti-inflammatory, and estrogenic/antiestrogenic properties. In the present study, it was aimed to investigate developmental and reproductive effects (developmental periods, average numbers of offspring, sex ratios) of resveratrol in Drosophila melanogaster. Their larvae were exposed to 50, 100, and 200 μM of resveratrol. Resveratrol treatments did not affect pupation and maturation rate (P ˃ 0.05) statistically. But the pupation and maturation times were significantly extended at all doses (P ˂ 0.05). Also, 100 and 200 μM resveratrol treatments resulted in a significant decrease in the number of offspring (P ˂ 0.05). The results reveal that resveratrol, which is generally known for its positive effects, may have negative effects on the development and reproduction of invertebrates. The results of this study support the idea that resveratrol may act as an endocrine disruptor, as it is a phytoestrogen.

Parabens are a group of chemicals used as preservatives in many industrial products such as foods, cosmetics, and pharmaceuticals. Recent studies have revealed that these chemicals have endocrine disrupting properties. Drosophila melanogaster is one of the suitable model organisms used to test the toxic effect of various chemicals in vivo. In this study, the effects of methylparaben (MP) (50 mM, 100 mM, and 200 mM), one of the most commonly used parabens, on the developmental parameters and fecundity of D. melanogaster were examined. No significant difference was observed in the viability rates from larva to pupa and from pupa to adult. However, experimented MP concentrations caused a delay in larva to pupa and pupa to adult developmental times (p<0.05). While MP did not cause a significant change in mean offspring number, it significantly decreased fecundity at all doses (p<0.05).