Abstract
The aims of this study was to improve the knowledge about the determination of age/longevity by the analysis of the age rings in otoliths of bioindicator fish with potential use in environmental monitoring programs, considering a regional, national and international approach. In this sense, it is proposed as an additional tool the determination of trace metals with toxic potential by the using of analytical techniques applied to microanalysis in calcified structures such as otoliths. Although in recent decade, some individuals of the Ariidae family have been validated and used as bioindicators species along the Brazilian coast, integrated analysis of exposure processes and chronic responses, with knowledge about the age of individuals, is still not considered. Together, the integrated analysis of abiotic and biotic factors, for instance physical and chemical characterization of the aquatic environment, determination of the metal content in the different environmental matrices, as well as the use of biomarkers in association with age/longevity estimates in bioindicator species may assist to understand the processes of exposure to organic and inorganic contaminants to which the biota is exposed, assisting environmental managers in decision making. Keywords : Environmental indicator; otoliths; trace metals; fish; pollution.
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