Fipronil (C12H4Cl2F6N4OS, CAS No: 120068-37-3) is frequently used in agricultural fields and veterinary medicine as an insecticide and acaricide. It is known to contaminate aquatic ecosystems by mixing with surface waters and to accumulate in abiotic matrices. In this study, the effects of fipronil are investigated using freshwater snails. After exposure of snails to 1, 10 and 100 mg L-1 fipronil for 7 days, all body tissues were taken. As a result of the study of glutathione, one of the tissue antioxidant parameters, a significant increase was observed in the control group, which was administered 1 mg L-1 fipronil, compared to the other dose groups (P

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In this study, the impacts of zebra mussels on aquatic communities (biology, ecology, natural enemies of zebra mussel, effects on the ecosystems etc.) were evaluated based on the international scientific literature. In the last 30 years, zebra mussel studies have been focused on their distribution, environmental interactions and harms in different aquatic ecosystems. With this review study, a synthesis was made from studies on zebra mussels that cause damage to many aquatic ecosystems around the world, and the hypothesis for their reduction in the ecosystem was put forward. As a result of this hypothesis, suggestions such as joining the pieces of a puzzle are presented in the last part of the review. With the implementation of the suggestions given as a result of the study, it will be possible to make a great contribution to the economies of the countries by reducing the zebra mussel, which causes a billion dollars of economic damage in aquatic ecosystems. In this context, freshwater lake, which is the most intense in America and freshwater lake in similar ecosystem which is rarely seen in Anatolia in Eurasia, should be studied simultaneously. As a result, by preventing the reproduction of the species causing problems in many aquatic ecosystems in the world, a great distance will be covered in terms of protecting water resources for the coming years.