[The dependence of respiratory intensity on body mass in representative Caudata and Salientia]

Experimental data indicate dependence of the respiration rate on the body mass in both caudate and ecaudate amphibians. The regression line slopes are similar in the both groups, while the a factor value is 3 times lower in the caudates than it is in ecaudates. There certain sex differences in the respiration rate which have no clear biological interpretation.