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  • Title: Sublethal effects of an organophosphate insecticide on the European eel, Anguilla anguilla.
    Author: Sancho E, Ferrando MD, Andreu E.
    Journal: Ecotoxicol Environ Saf; 1997 Feb; 36(1):57-65. PubMed ID: 9056401.
    Abstract:
    The present communication deals with the effects of fenitrothion (0.02 mg/liter) on the energy metabolism of the European eel, Anguilla anguilla, and its recovery from intoxication. Various parameters such as glycogen, lactate, proteins, and glucose levels were measured in different eel tissues after 2, 8, 12, 24, 32, 48, 56, 72, and 96 hr of fenitrothion exposure. Subsequently, the fish were allowed recovery periods of 8, 12, 24, 48, 72, 96, 144, and 192 hr in clean water, and the same parameters were evaluated. Liver glycogen content showed no significant changes during the exposure time, while blood glucose levels increased markedly. Gill, liver, and blood lactate values increased during pesticide exposure, while proteins decreased in comparison to unexposed controls. Most of the metabolic disorders did not persist after eels were allowed to recover in clean water for less than a week. The observed effects of fenitrothion on fish metabolism are discussed in relation to a stress syndrome, as are probable reasons for alterations.
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