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Biochemical composition of a dominant detritivorous fish Prochilodus lineatus along pollution gradients in the Paraná-Río de la Plata Basin.

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Title: Biochemical composition of a dominant detritivorous fish Prochilodus lineatus along pollution gradients in the Paraná-Río de la Plata Basin.
Authors: Speranza, E. D.1, Colombo, J. C.1 laqab@intervar.com.ar
Source: Journal of Fish Biology. Apr2009, Vol. 74 Issue 6, p1226-1244. 19p. 3 Charts, 3 Graphs, 1 Map.
Subjects: Prochilodus lineatus, Detritus, Food chains, Water pollution, Organic compounds, Contaminated sediments, Effect of contaminated sediments on aquatic organisms
Geographic Terms: Paraná (Argentina), Argentina
Abstract: The biochemical composition of muscle, liver and stomach contents of a detritivorous fish Prochilodus lineatus was analysed and compared to settling particles and sediments along pollution gradients over 1500 km of the Río de la Plata Basin to evaluate the effects of anthropogenic discharges in a detritus food chain. The stomach contents of P. lineatus collected in the polluted Metropolitan Buenos Aires coast were enriched in proteins, carbohydrates and lipids, similar to settling particulates collected in the sewer area, and two to five times higher than underlying sediments, supporting the interpretation that P. lineatus feeds on unconsolidated organic flocs freshly decanted from mixed industrial and sewage outfalls. Fish from Buenos Aires had consistently higher standard length ( LS) and mass ( MT) slopes ( b = 3·5), condition indexes ( K = 3·01 ± 0·47, mean ±s.d.) and muscle fat content (fat = 23·8 ± 13·8% wet mass, mean ±s.d.) relative to northern fish ( b = 2·7, K = 2·22 ± 0·39, fat = 3·4 ± 3·2% wet mass, respectively), suggesting that sewage-derived organic matter was an enriched diet, which allowed an enhanced body mass gain and fat accumulation compared to organic-poor vegetal detritus in the north Paraná area. Buenos Aires fish also showed higher hepato-somatic indices (mean ±s.d. IH 1·41 ± 0·49 v. 0·70 ± 0·32, respectively), which correlated with their two to three orders of magnitude higher hydrocarbon and polychlorinated biphenyl (PCB) loads, suggesting an enhanced detoxifying metabolism. The northward migration of fatty P. lineatus was evidenced by the presence of clear outliers in the LS and MT relationship, K and fat content along the Paraná River. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Fish Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
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  Data: Biochemical composition of a dominant detritivorous fish Prochilodus lineatus along pollution gradients in the Paraná-Río de la Plata Basin.
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  Data: <searchLink fieldCode="AR" term="%22Speranza%2C+E%2E+D%2E%22">Speranza, E. D.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Colombo%2C+J%2E+C%2E%22">Colombo, J. C.</searchLink><relatesTo>1</relatesTo><i> laqab@intervar.com.ar</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Fish+Biology%22">Journal of Fish Biology</searchLink>. Apr2009, Vol. 74 Issue 6, p1226-1244. 19p. 3 Charts, 3 Graphs, 1 Map.
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  Data: <searchLink fieldCode="DE" term="%22Prochilodus+lineatus%22">Prochilodus lineatus</searchLink><br /><searchLink fieldCode="DE" term="%22Detritus%22">Detritus</searchLink><br /><searchLink fieldCode="DE" term="%22Food+chains%22">Food chains</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+compounds%22">Organic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Contaminated+sediments%22">Contaminated sediments</searchLink><br /><searchLink fieldCode="DE" term="%22Effect+of+contaminated+sediments+on+aquatic+organisms%22">Effect of contaminated sediments on aquatic organisms</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Paraná+%28Argentina%29%22">Paraná (Argentina)</searchLink><br /><searchLink fieldCode="DE" term="%22Argentina%22">Argentina</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The biochemical composition of muscle, liver and stomach contents of a detritivorous fish Prochilodus lineatus was analysed and compared to settling particles and sediments along pollution gradients over 1500 km of the Río de la Plata Basin to evaluate the effects of anthropogenic discharges in a detritus food chain. The stomach contents of P. lineatus collected in the polluted Metropolitan Buenos Aires coast were enriched in proteins, carbohydrates and lipids, similar to settling particulates collected in the sewer area, and two to five times higher than underlying sediments, supporting the interpretation that P. lineatus feeds on unconsolidated organic flocs freshly decanted from mixed industrial and sewage outfalls. Fish from Buenos Aires had consistently higher standard length ( LS) and mass ( MT) slopes ( b = 3·5), condition indexes ( K = 3·01 ± 0·47, mean ±s.d.) and muscle fat content (fat = 23·8 ± 13·8% wet mass, mean ±s.d.) relative to northern fish ( b = 2·7, K = 2·22 ± 0·39, fat = 3·4 ± 3·2% wet mass, respectively), suggesting that sewage-derived organic matter was an enriched diet, which allowed an enhanced body mass gain and fat accumulation compared to organic-poor vegetal detritus in the north Paraná area. Buenos Aires fish also showed higher hepato-somatic indices (mean ±s.d. IH 1·41 ± 0·49 v. 0·70 ± 0·32, respectively), which correlated with their two to three orders of magnitude higher hydrocarbon and polychlorinated biphenyl (PCB) loads, suggesting an enhanced detoxifying metabolism. The northward migration of fatty P. lineatus was evidenced by the presence of clear outliers in the LS and MT relationship, K and fat content along the Paraná River. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Fish Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1111/j.1095-8649.2009.02191.x
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 19
        StartPage: 1226
    Subjects:
      – SubjectFull: Prochilodus lineatus
        Type: general
      – SubjectFull: Detritus
        Type: general
      – SubjectFull: Food chains
        Type: general
      – SubjectFull: Water pollution
        Type: general
      – SubjectFull: Organic compounds
        Type: general
      – SubjectFull: Contaminated sediments
        Type: general
      – SubjectFull: Effect of contaminated sediments on aquatic organisms
        Type: general
      – SubjectFull: Paraná (Argentina)
        Type: general
      – SubjectFull: Argentina
        Type: general
    Titles:
      – TitleFull: Biochemical composition of a dominant detritivorous fish Prochilodus lineatus along pollution gradients in the Paraná-Río de la Plata Basin.
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            NameFull: Speranza, E. D.
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            NameFull: Colombo, J. C.
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              Text: Apr2009
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              Y: 2009
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