Accession Number:

AD0648854

Title:

PESTICIDAL CONTROL OF CONTAMINANT MACRO-INVERTEBRATES ENCOUNTERED IN LABORATORY CULTURE OF MARINE SEA WEEDS.

Descriptive Note:

Corporate Author:

NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Report Date:

1967-01-17

Pagination or Media Count:

17.0

Abstract:

A laboratory technique for testing the effectiveness of pesticides toward contaminant invertebrates of marine sea weeds is described. Of several developmental and commercially available pesticides assayed, Lindane gamma-hexachlorocyclohexane proved most effective in controlling predacious invertebrates encountered in closed system culture of the marine alga, Ulva lobata. Polarographic measurements at the surface of Ulva lobata and Porphyra perforata, after 24 hr exposure, indicated that Lindane at levels of 650 ppm did not appreciably inhibit light activated oxygen evolution. The pesticides Dibrom 8 organic phosphate and Zectran methyl carbamate, were less effective toward invertebrate contaminants, and they greatly depressed oxygen evolution. Dibrom 8 and Zectran as here used appear to be inhibitors of photosynthesis. Author

Subject Categories:

  • Biological Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE