Endrin and malathion toxicity to flagfish (Jordanella floridae)

  • Roger O. Hermanutz
Article

Abstract

Endrin and malathion effects on survival, growth, and reproduction of flagfish were determined in a flow-through system. Endrin chronic effects on first-generation growth and reproduction occurred only at 0.3μg/L, the highest concentration tested. The mean endrin residues in the first-generation fish at 65 days were about 15,000 times the water concentration in all concentrations tested. Malathion concentrations of 31.5μg/L and 24.7μg/ L, the highest concentrations tested, had detrimental effects on first-generation survival. During the same period malathion concentrations as low as 10.9μg/L significantly affected growth. Neither insecticide, at the concentrations tested, had any detectable effects on the second generation during a 30-day exposure period.

Acute toxicities to juvenile fish were also determined in the same flow-through system. The 96-hr LC50's were 0.85μg/L for endrin and 349μg/L for malathion.

Keywords

Toxicity Detrimental Effect Water Concentration Acute Toxicity Exposure Period 

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Copyright information

© Springer-Verlag New York Inc 1978

Authors and Affiliations

  • Roger O. Hermanutz
    • 1
  1. 1.Environmental Research Laboratory-DuluthU.S. Environmental Protection AgencyDuluth

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