Heavy Metal Levels on Largemouth Bass (Micropterus salmoides Lacépède, 1802) from Tagus River Basin- Juniper Publishers
Juniper Publishers - Journal of Oceanography Introduction The Tagus River is the longest waterway in the Iberian Peninsula (1,007km) with source in Albarracin mountain- Spain and mouth in a wide estuary near Lisbon - Portugal. Throughout 32% of its waterway Tagus River influences the Portuguese territory with several irrigation dams and hydroelectric power plants. For decades, this river has received environmental pollutants from increased activities in industrial, domestic and agricultural systems, and also from a Spanish nuclear power plant that is 37 years old. This nuclear power plant is about to 100km far from the Portuguese border. For all those reasons it is very important to know the level of contamination of aquatic animals living in Tagus River. In many cases the toxicity caused by heavy metals is sublethal. Therefore, the animals can survive long enough to accumulate those metals and transfer them along the food chain. Historically, fish consumption per capita in Portugal