Journal
WATER
Volume 14, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/w14020144
Keywords
blood biochemical parameters; fish; reproductive system; silver nanoparticle
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This study investigates the toxicological effects of Ag-NPs on common molly and their larvae, finding that high concentrations of Ag-NPs have adverse effects on the reproductive system and blood parameters.
Nanoparticles (NPs) can display toxicological effects on aquatic organisms. This study investigates ecotoxicological effects of Ag-NPs on reproductive and blood parameters of adult common molly (Poecilia sphenops) and their larvae. During the LC50 96 h test, female fish were exposed to concentrations of 0, 5, 15, 25, 35, 45 and 60 mg L-1 of Ag-NPs, while larvae were exposed to 0, 3, 5, 10 and 15 mg L-1. Finally, we aim to evaluate the effects of 0, 5, 10 and 15 mg L-1 of Ag-NPs on parturition time, reproductive success and hematological parameters of the mature fish exposed to sub-lethal concentration during a 62-day period. We also evaluated the survival rate of larvae. The results show a positive correlation between mortality rate and Ag-NP concentration. Values for LC50 96 h in adult fish and larvae were 26.85 mg L-1 and 6.22 mg L-1, respectively. A lack of parturition and reproductive success were seen in fish that underwent chronic exposure to Ag-NPs (15 mg L-1). The results show that RBC, WBC and hematocrit were significantly decreased in fish exposed to Ag-NPs. In addition, the serum concentrations of total protein, albumin, cholesterol and triglycerides were significantly increased in fish submitted to Ag-NPs (concentrations of 5-15). In conclusion, submitting a fish to higher concentration than 10 mg L-1 has adverse effects on reproductive system and blood parameters.
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