Metals contents in two fishes of different feeding behaviour in the Lower Paraná River and Río de la Plata Estuary
Cd, Cr, Cu and Pb concentrations were measured in the water and these plus Zn were measured in the diet, muscle and liver of the detritivorous fish Prochilodus lineatus and the omnivorous fish Pterodoras granulosus at two sites (Lower Paraná River and Río de la Plata right margin) located upstream a...
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todo:paper_00188158_v457_n_p225_Villar2023-10-03T14:15:55Z Metals contents in two fishes of different feeding behaviour in the Lower Paraná River and Río de la Plata Estuary Villar, C. Stripeikis, J. Colautti, D. D'Huicque, L. Tudino, M. Bonetto, C. Detritivorous Fishes Metals Omnivorous Paraná River Río de la Plata Estuary Feeding Metals Muscle Rivers Vegetation Water Zinc Xenobiotics Fisheries bioaccumulation detritivory estuarine ecosystem feeding behavior fish heavy metal omnivory Argentina Bivalvia Corbicula Corbicula fluminea Pisces Prochilodus Prochilodus lineatus Pterodoras granulosus Vertebrata Cd, Cr, Cu and Pb concentrations were measured in the water and these plus Zn were measured in the diet, muscle and liver of the detritivorous fish Prochilodus lineatus and the omnivorous fish Pterodoras granulosus at two sites (Lower Paraná River and Río de la Plata right margin) located upstream and downstream, respectively, from Buenos Aires, an important source of xenobiotics. Cu and Cr concentrations in water were higher in the Río de la Plata coastal waters, while Cd and Pb were below detection limits. The stomach contents of P. lineatus showed a higher metal content at the estuary, attaining concentrations within the range reported for contaminated sediments. However, metals in fish tissue were not higher at the estuary and, except for Cd in liver, were lower than in the organic fraction of the stomach content. Thus, only Cd was accumulated. The P. granulosus diet was composed mainly of river vegetation debris and clams, Corbicula fluminea, at the estuary. Cd, Cu and Pb in liver were higher at the estuary while only Cu was higher in the diet at this site. The different nature of the diet seems associated with a differential bioavailability of its metal content. P. granulosus accumulates Cu at both sites and Cd at the estuary. Both fishes showed higher metal content in liver than in muscle. Cr in liver was below detection limits. No relation was found between metal content and fish size. Overall, metal content in fish tissues were low, except for Cu in P. granulosus and Cd in P. lineatus, similar to those of uncontaminated sites, suggesting that homeostatic mechanisms prevent metal accumulation. Fil:Villar, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Stripeikis, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tudino, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bonetto, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00188158_v457_n_p225_Villar |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Detritivorous Fishes Metals Omnivorous Paraná River Río de la Plata Estuary Feeding Metals Muscle Rivers Vegetation Water Zinc Xenobiotics Fisheries bioaccumulation detritivory estuarine ecosystem feeding behavior fish heavy metal omnivory Argentina Bivalvia Corbicula Corbicula fluminea Pisces Prochilodus Prochilodus lineatus Pterodoras granulosus Vertebrata |
| spellingShingle |
Detritivorous Fishes Metals Omnivorous Paraná River Río de la Plata Estuary Feeding Metals Muscle Rivers Vegetation Water Zinc Xenobiotics Fisheries bioaccumulation detritivory estuarine ecosystem feeding behavior fish heavy metal omnivory Argentina Bivalvia Corbicula Corbicula fluminea Pisces Prochilodus Prochilodus lineatus Pterodoras granulosus Vertebrata Villar, C. Stripeikis, J. Colautti, D. D'Huicque, L. Tudino, M. Bonetto, C. Metals contents in two fishes of different feeding behaviour in the Lower Paraná River and Río de la Plata Estuary |
| topic_facet |
Detritivorous Fishes Metals Omnivorous Paraná River Río de la Plata Estuary Feeding Metals Muscle Rivers Vegetation Water Zinc Xenobiotics Fisheries bioaccumulation detritivory estuarine ecosystem feeding behavior fish heavy metal omnivory Argentina Bivalvia Corbicula Corbicula fluminea Pisces Prochilodus Prochilodus lineatus Pterodoras granulosus Vertebrata |
| description |
Cd, Cr, Cu and Pb concentrations were measured in the water and these plus Zn were measured in the diet, muscle and liver of the detritivorous fish Prochilodus lineatus and the omnivorous fish Pterodoras granulosus at two sites (Lower Paraná River and Río de la Plata right margin) located upstream and downstream, respectively, from Buenos Aires, an important source of xenobiotics. Cu and Cr concentrations in water were higher in the Río de la Plata coastal waters, while Cd and Pb were below detection limits. The stomach contents of P. lineatus showed a higher metal content at the estuary, attaining concentrations within the range reported for contaminated sediments. However, metals in fish tissue were not higher at the estuary and, except for Cd in liver, were lower than in the organic fraction of the stomach content. Thus, only Cd was accumulated. The P. granulosus diet was composed mainly of river vegetation debris and clams, Corbicula fluminea, at the estuary. Cd, Cu and Pb in liver were higher at the estuary while only Cu was higher in the diet at this site. The different nature of the diet seems associated with a differential bioavailability of its metal content. P. granulosus accumulates Cu at both sites and Cd at the estuary. Both fishes showed higher metal content in liver than in muscle. Cr in liver was below detection limits. No relation was found between metal content and fish size. Overall, metal content in fish tissues were low, except for Cu in P. granulosus and Cd in P. lineatus, similar to those of uncontaminated sites, suggesting that homeostatic mechanisms prevent metal accumulation. |
| format |
JOUR |
| author |
Villar, C. Stripeikis, J. Colautti, D. D'Huicque, L. Tudino, M. Bonetto, C. |
| author_facet |
Villar, C. Stripeikis, J. Colautti, D. D'Huicque, L. Tudino, M. Bonetto, C. |
| author_sort |
Villar, C. |
| title |
Metals contents in two fishes of different feeding behaviour in the Lower Paraná River and Río de la Plata Estuary |
| title_short |
Metals contents in two fishes of different feeding behaviour in the Lower Paraná River and Río de la Plata Estuary |
| title_full |
Metals contents in two fishes of different feeding behaviour in the Lower Paraná River and Río de la Plata Estuary |
| title_fullStr |
Metals contents in two fishes of different feeding behaviour in the Lower Paraná River and Río de la Plata Estuary |
| title_full_unstemmed |
Metals contents in two fishes of different feeding behaviour in the Lower Paraná River and Río de la Plata Estuary |
| title_sort |
metals contents in two fishes of different feeding behaviour in the lower paraná river and río de la plata estuary |
| url |
http://hdl.handle.net/20.500.12110/paper_00188158_v457_n_p225_Villar |
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