Methiocarb (4-methylthio-3,5-xylylN-methyl carbamate, Mesurol, Bay 37344), a bird repellent, was fed in concentrations of 100 to 1,000 ppm to common grackles (Quiscalus quiscula), mourning doves (Zenaida macroura.), and breeding pairs of coturnix quail (Coturnix coturnix) to investigate the possibility of cumulative intoxication. Although aversion to treated diets was readily apparent in most of the tests, the 28-to 30-day median lethal concentration (LC50) was determined to be >100 ppm for grackles, 630 ppm (95% confidence limits, 480–830 ppm) for doves, and >1,000 ppm for coturnix quail. Methiocarb appeared to be noncumulative when measured by an index of chronicity: birds consumed several LD50 doses during a day's feeding, and when deaths occurred, they appeared to be due to acute intoxication. Egg production and live chick production were not affected in coturnix fed 100 ppm but were reduced at 316 and 1,000 ppm.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Price includes VAT (USA)
Tax calculation will be finalised during checkout.
GUARINO, J. L.: Proc. Vertebr. Pest Conf.5, 108 (1972).
KENAGA, E. E.:In Global aspects of chemistry, toxicology and technology as applied to the environment, by F. Coulston and F. Korte, eds. New York: Academic Press 1973.
SCHAFER, E. W., JR.: Toxicol. Appl. Pharmacol.21, 315 (1972).
SCHAFER, E. W., JR., and R. B. BRUNTON: J. Wildl. Manage.35, 569 (1971).
THOMPSON, W. R. Bacteriol. Rev.11, 115 (1947).
THOMPSON, W. R., and C. S. WEIL: Biometrics8, 51 (1952).
WEIL, C. S.: Biometrics8, 249 (1952).
About this article
Cite this article
Schafer, E.W., Brunton, R.B., Lockyer, N.F. et al. The chronic toxicity of methiocarb to grackles, doves, and quail and reproductive effects in quail. Bull. Environ. Contam. Toxicol. 14, 641–647 (1975). https://doi.org/10.1007/BF01685236
- Confidence Limit
- Chronic Toxicity
- Breeding Pair
- Lethal Concentration