Abstract:
When three or more beetles per cm2 were exposed to Ptkolin-treated filter papers in closed petri dishes the resulting mortality was much higher than when one beetle or less per cm2 was exposed. Similar results were obtained with Petkolin dust. However, when the exposures were made in uncovered dishes the density mortality relationship did not indicate the above trend. In case of Dimecron, though the exposures were made in covered dishes, the mortality did not increase with higher densities. The probability of critical level of oxygen need in covered dishes has been reported by many workers in such studies. The same was the case with Petkolin in the present study.
Page(s):
148-150
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Scientific and Industrial Research, Volume: 16, Issue: 3--4, Year: 1973