Chloramine and copper sulfate as control agents of planktonic larvae of chironomus luridus in water supply systems

M. Halpern, A. Gasith, B. Teltsch, R. Porat, M. Broza

Research output: Contribution to journalArticlepeer-review

Abstract

The latest approach to control of midge larvae in drinking-water supplies is suppression of the planktonic 1st-stage larvae, by using 2 disinfectants, chloramine and copper sulfate. The median lethal concentration for 24-h exposure of the 1st-stage larvae of Chironomus luridus to chloramine and copper sulfate individually was 0.51 and 0.38 mg/liter, respectively. The increase of copper sulfate to 0.5 mg of copper per liter to water containing chloramine (0.5 mg/liter) created a synergistic reaction that resulted in 96% (±8% SD) mortality of the planktonic larvae. This treatment may serve as an effective control of 1st-stage larvae in municipal drinking-water supplies.

Original languageEnglish
Pages (from-to)453-457
Number of pages5
JournalJournal of the American Mosquito Control Association
Volume15
Issue number4
StatePublished - Dec 1999

Keywords

  • Chironomidae
  • Chloramine
  • Copper sulfate
  • Midge control
  • Water supply

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