Monitoring the Effect of Thiobencarb as an Endocrine Disruptors on Fecundity of Tilapia Cultured Female Oreochromis niloticus

Acute toxicity, biochemical and histological of fenitrothion and thiobencarb on fish Nile tilapia (Oreochromis niloticus)

“…Furthermore, the highest concentration of thiobencarb was in the liver, while the lowest was found in the fish brain (Abumourad et al 2010). Our results are also compatible with the results obtained by Abbas et al (2007) and Eissa et al (2015), who studied the side effects of Nile tilapia O. niloticus exposed to thiobencarb. In addition, the results of fenitrothion are in agreement with the results of other studies that investigated the effects of sublethal fenitrothion on Nile tilapia; it showed histopathological alterations in the gills, liver, and kidney (Benli and Özkul 2010), the effect of organophosphorus insecticides malathion and fenitrothion on fish tilapia (Ohaida and Akrawee 2010), the effect of fipronil on Nile tilapia (El-Murr et al 2015), and histological effects of deltamethrin on tissues of gills, liver, and kidney of Nile tilapia (Yildirim et al 2006), mosquitofish (Cengiz and Unlu 2006).…”

“…It was observed that the mortality rate of tested pesticide exposure ranged from 15-55% in acute doses, which began high and decreased gradually. This observation also supported the mortality rate of thiobencarb exposure ranged from 25-30%, which began high and decreased gradually (Eissa et al 2015).…”

“…Also, the experiments showed that the LC50 at 96 h of fenitrothion was 0.2 mg L -1 in A. anguilla (Ferrando et al 1991) and 1.64 mg L -1 for top mouth gudgeon (Solomo et al 2000). Experimentally, the LC50 of thiobencarb in this study on O. niloticus (8-10 g of body weight) was found to be 0.32 mg L -1 for 96 h, which conformed by Eissa et al (2015), which was 0.40 mg L -1 while; was less than that recorded by Abbas et al (2007), and Abumourad et al (2010) which was 0.72 mg L -1 on Nile tilapia of body weight (15-20 g). Thiobencarb, at very low doses, is widely used to eradicate the larvae of mosquitoes and control argulus disease and milkfish during pond preparation, which can be toxic to aquatic organisms (Abbas et al 2007).…”

“…The results demonstrated the calculated 96-h LC50 value of fenitrothion, using a static bioassay system to Nile tilapia (O. niloticus) of body weight (8-10 g) was 0.20 mg L -1 . Despite being the same species, the difference in LC50 was referred to as the difference in body weight (Eissa et al 2015). The results showed that fenitrothion is highly toxic to Nile tilapia.…”