STUDIES UPON THE RESPIRATORY SYSTEM OF ONCOMELANIA NOSOPHORA

REPORT II

Abstract

The rate of oxygen uptake by snails collected in four seasons and the effect of 5 chemicals (86%sodium pentachlorophenate, 80%Sodium pentachlophenate, Santobrite, 40%Dinitro-O-cyclohe xylphenol, ammonium sulphate) upon the respiration of snails were inuestigated.
1). The rate of oxygen uptake was incresed when the snail was more active.
2). In spring and winter, 86%PCP-Na showed the strongest inhibitory effect upon the oxygen uptake and in summer and autumn 79%PCP-Na Showed the strongest inhibitory effect.
3). Ammonium sulfate was effective upon snail in winter.