[Effects of temperature on respiration defensive behavior and locomotion of fresh water snail Lymnaea stagnalis].

Temperature dependence of lung respiration, defensive behavior and locomotion of Lymnaea stagnalis snail was studied. At the temperature in the range of 4-6 degrees C the rates of locomotion and respiration were reduced (as compared to control temperature of 14-16 degrees C), whereas defensive reactions were much more intense. Vice versa, the temperature rise to 24-26 degrees C activates respiration and locomotion but inhibits defensive behavior. It is suggested that the observed changes in Lymnaea behavior result from temperature-dependent reactions of neurons underlying these activities.