Accession Number:

AD0736336

Title:

The Comparative Effects of CS and Various Pollutants on Fresh Water Phytoplankton Colonies of 'Wolffia papulifera' Thompson

Descriptive Note:

Technical rept. Jun 1970-May 1971

Corporate Author:

EDGEWOOD ARSENAL ABERDEEN PROVING GROUND MD

Report Date:

1971-12-01

Pagination or Media Count:

27.0

Abstract:

Varying concentrations of nine potential pollutants were tested for effects in vitro against colonies of Wolffia papulifera. Death was observed in colonies of Wolffia exposed to 100 ppm or above of CS, DDT, Malathion, Diazinon, and indole acetic acid IAA and to 1000 ppm of Aldrin, Dieldrin, Sevin, and 2, 4-D. No effects were seen in xxxxxxx colonies exposed to 5 ppm or below of CS, DDT, and IAA 1 ppm of Dieldrin, Diazinon, and Sevin 0.1 ppm of Aldrin and Malathion and 0.01 ppm of 2,4-D. Teratogenic effects were observed in Wolffia colonies exposed to Malathion at 1 ppm, of 2,4-D at 0.1 ppm and above, and Diazinon at 10 ppm. Responses of Wolffia colonies to all dose levels of pollutants tested, as well as pictorial evidence of teratogenicity, are included.

Subject Categories:

  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE