Year: 1972
Type: article
Abstract: Some fundamental experiments on the insecticidal activities of Cynock, O, O-dimethyl-O-(4-cyanophenyl) phosphorothioate, to sanitary insect were carried out in the laboratory comparing with other commonly used insecticides. The median lethal doses of Cynock against houseflies, german cockroaches and smoky brown cockroaches were 0.115μg, 0.26μg and 1.35μg per insect respectively and the median lethal concentration to mosquito larvae was 0.017ppm. The potency of Cynock to control houseflies seemed to be equal to that of fenitrothion. For controlling against mosquito larvae Cynock showed a good persistency of the efficacy in filthy water containing decomposed laboratory-animal food as same as in distilled water, comparing with the rapid detoxification of fenitrothion in the filthy water. Cynock was the most effective to cockroaches among the insecticides tested in the present study by the topical application, the film contact and the bait method. From the results of these experiments, it is presume that Cynock is a very promising sanitary insecticide in practical use because of its high insecticidal activity, long persistency of efficacy to the insect and low toxicity to mammals.
Source: Medical Entomology and Zoology
DOI: 10.7601/mez.23.35
Authors: Keimei FUJIMOTO, Yoshitoshi OKUNO
Institution: Sumitomo Chemical (Japan)
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W410596016