INVESTIGADORES
MONFERRAN Magdalena Victoria
artículos
Título:
Bioindicators and biomarkers of environmental pollution in the middle-lower basin of the Suquía River (Córdoba, Argentina)
Autor/es:
TAMARA MAGGIONI; ANDREA CECILIA HUED; MAGDALENA VICTORIA MONFERRAN; ROCÝO INES BONANSEA; LUCAS NICOLAS GALANTI; MARÝA VALERIA AME
Revista:
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012 vol. 63 p. 337 - 353
ISSN:
0090-4341
Resumen:
Abstract The Suquý´a River middle-lower basin (Co´rdoba,
Argentina) is subject to a strong anthropogenic impact
because it receives pollutants from different sources. Recent
studies have shown the importance and the need of
approaching the monitoring process of water quality from
integral perspectives through the use of chemical as well as
biological methods. The main goal of this study was to
evaluate the fish species Jenynsia multidentata as a bioindicator
of environmental pollution in the middle-lower basin
of the Suquý´a River using biotransformation and antioxidant
enzymes as well as gill and liver histopathology as biomarkers.
We also studied the fish-assemblage characteristics
through the fish species pattern variation and the application
of a biotic index based on fish data. Our study also included
the analysis of a water-quality index, heavy-metal concentrations
in sediment and water, and pesticide concentrations
in sediment. The chemical analyses of the middle-lower
Suquý´a River basin showed a water-quality degradation
gradient. Fish-assemblage structure changed with increasing
water pollution, showing a simpler structure at the most
polluted area. According to the bioitc index, the variation
pattern of fish assemblages reflected the aquatic environmental
deterioration. Both molecular and histopathological
biomarkers reflected the same trend in relation to water
quality. However, enzymes varied with more acute precision
between seasons. In addition, each enzyme presented with
different sensibility. At tissue level, the histopathological
analysis detected chronic contamination at both stations and
seasons. The present work, which comprises different levels
of biological organization together with chemical analyses,
generated particular although complementary information,
thus evidencing the same trend of aquatic contamination.
Thus, the development of integral investigations gives a
comprehensive approach and becomes the most effective
tool to construct policies both preventive and palliative. Our
study constitutes a good model to be applied in other endorheic
basins of South America.
Suquý´a River basin showed a water-quality degradation
gradient. Fish-assemblage structure changed with increasing
water pollution, showing a simpler structure at the most
polluted area. According to the bioitc index, the variation
pattern of fish assemblages reflected the aquatic environmental
deterioration. Both molecular and histopathological
biomarkers reflected the same trend in relation to water
quality. However, enzymes varied with more acute precision
between seasons. In addition, each enzyme presented with
different sensibility. At tissue level, the histopathological
analysis detected chronic contamination at both stations and
seasons. The present work, which comprises different levels
of biological organization together with chemical analyses,
generated particular although complementary information,
thus evidencing the same trend of aquatic contamination.
Thus, the development of integral investigations gives a
comprehensive approach and becomes the most effective
tool to construct policies both preventive and palliative. Our
study constitutes a good model to be applied in other endorheic
basins of South America.The Suquý´a River middle-lower basin (Co´rdoba,
Argentina) is subject to a strong anthropogenic impact
because it receives pollutants from different sources. Recent
studies have shown the importance and the need of
approaching the monitoring process of water quality from
integral perspectives through the use of chemical as well as
biological methods. The main goal of this study was to
evaluate the fish species Jenynsia multidentata as a bioindicator
of environmental pollution in the middle-lower basin
of the Suquý´a River using biotransformation and antioxidant
enzymes as well as gill and liver histopathology as biomarkers.
We also studied the fish-assemblage characteristics
through the fish species pattern variation and the application
of a biotic index based on fish data. Our study also included
the analysis of a water-quality index, heavy-metal concentrations
in sediment and water, and pesticide concentrations
in sediment. The chemical analyses of the middle-lower
Suquý´a River basin showed a water-quality degradation
gradient. Fish-assemblage structure changed with increasing
water pollution, showing a simpler structure at the most
polluted area. According to the bioitc index, the variation
pattern of fish assemblages reflected the aquatic environmental
deterioration. Both molecular and histopathological
biomarkers reflected the same trend in relation to water
quality. However, enzymes varied with more acute precision
between seasons. In addition, each enzyme presented with
different sensibility. At tissue level, the histopathological
analysis detected chronic contamination at both stations and
seasons. The present work, which comprises different levels
of biological organization together with chemical analyses,
generated particular although complementary information,
thus evidencing the same trend of aquatic contamination.
Thus, the development of integral investigations gives a
comprehensive approach and becomes the most effective
tool to construct policies both preventive and palliative. Our
study constitutes a good model to be applied in other endorheic
basins of South America.
Suquý´a River basin showed a water-quality degradation
gradient. Fish-assemblage structure changed with increasing
water pollution, showing a simpler structure at the most
polluted area. According to the bioitc index, the variation
pattern of fish assemblages reflected the aquatic environmental
deterioration. Both molecular and histopathological
biomarkers reflected the same trend in relation to water
quality. However, enzymes varied with more acute precision
between seasons. In addition, each enzyme presented with
different sensibility. At tissue level, the histopathological
analysis detected chronic contamination at both stations and
seasons. The present work, which comprises different levels
of biological organization together with chemical analyses,
generated particular although complementary information,
thus evidencing the same trend of aquatic contamination.
Thus, the development of integral investigations gives a
comprehensive approach and becomes the most effective
tool to construct policies both preventive and palliative. Our
study constitutes a good model to be applied in other endorheic
basins of South America.Jenynsia multidentata as a bioindicator
of environmental pollution in the middle-lower basin
of the Suquý´a River using biotransformation and antioxidant
enzymes as well as gill and liver histopathology as biomarkers.
We also studied the fish-assemblage characteristics
through the fish species pattern variation and the application
of a biotic index based on fish data. Our study also included
the analysis of a water-quality index, heavy-metal concentrations
in sediment and water, and pesticide concentrations
in sediment. The chemical analyses of the middle-lower
Suquý´a River basin showed a water-quality degradation
gradient. Fish-assemblage structure changed with increasing
water pollution, showing a simpler structure at the most
polluted area. According to the bioitc index, the variation
pattern of fish assemblages reflected the aquatic environmental
deterioration. Both molecular and histopathological
biomarkers reflected the same trend in relation to water
quality. However, enzymes varied with more acute precision
between seasons. In addition, each enzyme presented with
different sensibility. At tissue level, the histopathological
analysis detected chronic contamination at both stations and
seasons. The present work, which comprises different levels
of biological organization together with chemical analyses,
generated particular although complementary information,
thus evidencing the same trend of aquatic contamination.
Thus, the development of integral investigations gives a
comprehensive approach and becomes the most effective
tool to construct policies both preventive and palliative. Our
study constitutes a good model to be applied in other endorheic
basins of South America.
Suquý´a River basin showed a water-quality degradation
gradient. Fish-assemblage structure changed with increasing
water pollution, showing a simpler structure at the most
polluted area. According to the bioitc index, the variation
pattern of fish assemblages reflected the aquatic environmental
deterioration. Both molecular and histopathological
biomarkers reflected the same trend in relation to water
quality. However, enzymes varied with more acute precision
between seasons. In addition, each enzyme presented with
different sensibility. At tissue level, the histopathological
analysis detected chronic contamination at both stations and
seasons. The present work, which comprises different levels
of biological organization together with chemical analyses,
generated particular although complementary information,
thus evidencing the same trend of aquatic contamination.
Thus, the development of integral investigations gives a
comprehensive approach and becomes the most effective
tool to construct policies both preventive and palliative. Our
study constitutes a good model to be applied in other endorheic
basins of South America.