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Morphological abnormalities in African catfish (Clarias gariepinus) larvae exposed to malathion
Nguyen, T.H.L.; Adriaens, D.; Janssen, C.R. (1997). Morphological abnormalities in African catfish (Clarias gariepinus) larvae exposed to malathion. Chemosphere 35(7): 1475-1486. https://dx.doi.org/10.1016/s0045-6535(97)00208-7
In: Chemosphere. Elsevier: Oxford. ISSN 0045-6535; e-ISSN 1879-1298, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Biological effects
    Chemicals > Organic compounds > Organophosphorus compounds > Pesticides > Organophosphorus pesticides > Ectoparasiticides > Organophosphorus ectoparasiticides > Organothiophosphate insecticides > Organothiophosphate acaricides > Ectoparasiticides > Malathion
    Development
    Laboratory studies
    Organophosphorus compounds
    Pesticides > Insecticides
    Pollutants
    Clariidae Bonaparte, 1845 [WoRMS]; Pisces [WoRMS]; Vertebrata [WoRMS]
    Zoet water
Auteurs  Top 
  • Nguyen, T.H.L.
  • Adriaens, D., meer
  • Janssen, C.R., meer
Abstract
    Newly hatched larvae of Clarias gariepinus were exposed to malathion concentrations ranging from 0.3 mg/l to 5.0 mg/l. Their development was observed through five days posthatch, i.e. the stage in which the vertebral elements are not yet present and the notochord is the only functional body axis. A significant higher proportion of C. gariepinus larvae with deformed notochord and pericardial edema was detected at 2.5 mg/l malathion and higher. The results suggested that (1) deformed notochord was the result of the uncontrolled contractions of the body musculature due to malathion toxicity and (2) the vertebral deformities observed in the fish which have been exposed to malathion from the notochord-stage onwards were the result of a deformed notochord instead of the deformation of the vertebral elements themselves.
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