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Seasonal variation of Sarpa salpa fish toxicity, as related to phytoplankton consumption, accumulation of heavy metals, lipids peroxidation level in fish tissues and toxicity upon mice
Bellassoued, K; Hamza, A; van Pelt, J.; Elfeki, A (2013). Seasonal variation of Sarpa salpa fish toxicity, as related to phytoplankton consumption, accumulation of heavy metals, lipids peroxidation level in fish tissues and toxicity upon mice. Environ. Monit. Assess. 185(2): 1137-1150. dx.doi.org/10.1007/s10661-012-2621-1
In: Environmental Monitoring and Assessment. Kluwer: Dordrecht. ISSN 0167-6369, more
Peer reviewed article  

Available in  Authors 
    VLIZ: Open Repository 274910 [ OMA ]

Keywords
    Diplodus annularis (Linnaeus, 1758) [WoRMS]; Posidonia oceanica (Linnaeus) Delile, 1813 [WoRMS]; Sarpa salpa (Linnaeus, 1758) [WoRMS]; Marine
Author keywords
    Diet; Heavy metals; Neurotoxins; Mouse bioassay; S.salpa; TBARS; Toxicdinoflagellate

Authors  Top 
  • Bellassoued, K
  • Hamza, A.
  • van Pelt, J.
  • Elfeki, A

Abstract
    The aim of this work was to investigate for Sarpa salpa the seasonal trend in the food sources, heavy metals bioaccumulation and the oxidative stress in the organs. In addition, the toxicity was assessed by mouse bioassay of extract of the fish's organs collected in autumn, the peak of occurrence of hallucinatory syndrome. The toxicity was further studied for compounds present in epiphyte collected from the sea at the end of spring and in summer that are digested by the S. salpa in these seasons. We observed a higher lipid peroxydation in different tissues of S. salpa compared to the control fish Diplodus annularis. Furthermore, heavy metals accumulation in organs of these fish showed a significant variation between the two species (P?S. salpa were as follows: 1.217, 2.195, 14.395, 18.645 g/kg mouse, respectively. We noticed a significant correlation (P?P. oceanica leaves, to the fish by grazing. Our work indicates that, toxic phytoplanktons and heavy metals accumulation are responsible for the increase of oxidative stress in the organs of S. salpa. Hence, the edible part of S. salpa, especially the viscera and liver, can cause a threat to human health, and consumption should, for this reason, be dissuaded.

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