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Embryo-larval toxicity tests with the African catfish (Clarias gariepinus): Comparative sensitivity of endpoints
Nguyen, L.T.H.; Janssen, C.R. (2002). Embryo-larval toxicity tests with the African catfish (Clarias gariepinus): Comparative sensitivity of endpoints. Arch. Environ. Contam. Toxicol. 42(2): 256-262. https://dx.doi.org/10.1007/s00244-001-0007-4
In: Archives of Environmental Contamination and Toxicology. Springer: New York. ISSN 0090-4341; e-ISSN 1432-0703, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Chemicals > Organic compounds > Organophosphorus compounds > Pesticides > Organophosphorus pesticides > Ectoparasiticides > Organophosphorus ectoparasiticides > Organothiophosphate insecticides > Organothiophosphate acaricides > Ectoparasiticides > Malathion
    Comparative studies
    Development
    Developmental stages > Embryos
    Developmental stages > Larvae
    Freshwater environment
    Growth
    Heavy metals
    Malformations
    Organophosphorus compounds
    Pentachlorophenol
    Pesticides
    Pesticides > Insecticides
    Survival
    Tests > Toxicity tests
    Toxicity
    Water pollution
    Clarias gariepinus (Burchell, 1822) [WoRMS]; Clariidae Bonaparte, 1845 [WoRMS]; Pisces [WoRMS]; Vertebrata [WoRMS]
    Zoet water
Auteurs  Top 
  • Nguyen, L.T.H.
  • Janssen, C.R., meer
Abstract
    Embryo-larval toxicity tests with the African catfish (Clarias gariepinus) were performed to assess the comparative sensitivity of different endpoints. Measured test responses included embryo and larval survival, hatching, morphological development, and larval growth. Chromium, cadmium, copper, sodium pentachlorphenol (NaPCP), and malathion were used as model toxicants. Hatching was not affected by any of the chemicals tested, and embryo survival was only affected by chromium at ≥ 36 mg/L. The growth of larvae was significantly reduced at ≥ 11 mg/L Cr, ≥ 0.63 mg/L Cu, ≥ 0.03 mg/L NaPCP, and ≥ 1.25 mg/L malathion. Morphological development of C. gariepinus was affected by all of the toxicants tested. Different types of morphological aberrations were observed, i.e., reduction of pigmentation in fish exposed to cadmium and copper, yolk sac edema in fish exposed to NaPCP and malathion, and deformation of the notochord in fish exposed to chromium and malathion. The sensitivity of the endpoints measured can be summarized as follows: growth > abnormality > larval survival > embryo survival > hatching.
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