Groves, Phillip a. <br/><br/>
Preliminary field study of hepatic porphyrin profiles of Astyanax fasciatus - Teleostei, Characiformes - to define anthropogenic pollution / Leonidas Carrasco-Letelier ...[et al.]. 

 - 8 páginas 
<br/><br/> Disponible en caja 17 no 4 de INICNE 
<br/><br/> The implementation of eco-toxicological assessment in South America is presently limited due to significant scientific information gaps concerning native species and their potential use as biomarkers. Recently, a common southern hemisphere fish species, Astyanax fasciatus, has been pointed out as a potential bio-indicator to anthropogenic pollution. This is a small, abundant, Neotropical characid, which is widely distributed from Central America south, to the Rio de la Plata Basin of western Uruguay. Our study found a statistically significant increase of coproporphyrin, uroporphyrin and protoporphyrin concentrations in hepatic tissues of A. fasciatus collected from a stream segment with high anthropogenic disturbance (due mainly to agricultural derivatives and motor vehicle transportation activities). Although the area studied showed differences in up and downstream limno-chemical parameters, these differences were not related to the increase of hepatic porphyrin concentrations. Based on the results of our study, we conclude that A. fasciatus is a good bio-indicator of exposure to environmental contaminants, and we propose that this abundant fish species be considered as a sentinel organism for monitoring potential disturbances to freshwater ecosystems. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astyanax Fasciatus<br/>Toxicología<br/>Toxicity<br/>Contaminantes Ambientales<br/>Pollution<br/>Peces de Agua Dulce<br/>Inland Waters<br/>Freshwater Fish<br/>Argentina<br/>Uruguay