Abstract
The action of atmospheric particulate matter (MPA) from the steel industry will be evaluated in: (1) Nile tilapia(Oreochromis niloticus), a euryhaline species of commercial interest, whose physiological and biochemicalparameters are well known; (2) a top-of-the-chain species, sea bass (Centropomus parallelus), which is an indicator of the real effects on the estuary environment. Specimens…