ICYTAC   23898
INSTITUTO DE CIENCIA Y TECNOLOGIA DE ALIMENTOS CORDOBA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Matching Pollution with Biomarkers Response in Centropomus parallelus by multivariate statistics
Autor/es:
I.C. SOUZA; I.D. DUARTE; N.Q. PIMENTEL; L.D. ROCHA; M. MOROZESK; M.M. BONOMO; V.C. AZEVEDO; C.D.S. PEREIRA; M.V. MONFERRÁN; C.R.D. MILANEZ; S.T. MATSUMOTO; D.A. WUNDERLIN; M.N. FERNANDES
Lugar:
Rio Grande-RS
Reunión:
Congreso; Congresso Brasileiro de Toxicología Aquática; 2013
Resumen:
The present study confirms the utility of C. parallelus as bioindicator for neotropical estuaries, mainly considering its ability to adapt to diverse environments, reflecting environmental changes. The use of several biomarkers responded quite well to different pollution scenarios in Santa Cruz and Vitoria Bay estuaries, matching their response to the physical and chemical parameters, measured at different partitions within the estuary. Also metal bioaccumulation in fish muscle was useful to bioconcentrate some metals that were below analytical detection limits, showing the importance of using fish or other biota components to fully evaluate the pollution degree in estuaries, pointing out the risk for people consuming fish exceeding allowance limits for some elements. The use of multivariate statistics greatly contributes to extrapolate results from field and laboratory measurements, pointing out parameters that help to differentiate sites with different water quality and, consequently, different risks for the aquatic biota. Furthermore, statistical methods like LDA, GPA and CCA contribute to integrating the knowledge coming from different scientific disciplines, like biology and chemistry, producing more complete results complementing both field and laboratory efforts. Further integrated studies using different species from several trophic levels should be necessary to fully evaluate changes in studied estuaries, looking for additional bioindicators and biomarkers that reflect the pollution degree and its toxicity to the estuarine biota.