Small intestinal and hepatic amylase activity of different vertebrates and invertebrates.

Studies have been done on amylase activity of the small intestine and liver of toad, calotes, pigeon rat, guinea pig and pilaglobosa. It has been found that amylase activity was maximum in pigeon, rat, guinea pig and then in calotes and pilaglobosa and least activity was found in toad, and seem to be related to the phylogeny and the dietary habbit.

Comparative studies on different small intestinal oligosaccharidase activities in some vertebrates and invertebrates like molluscs.

Oligosaccharidase activities of the small intestinal mucosal homogenates were measured in vertebrates viz fish, toad, garden-lizard (calotes), pigeon, rat and some invertebrates viz, molluscsa. Maximum activities of the enzymes Lactase, Sucrase and Maltase were found in the mammalian species rat, whereas much less activities were found in the non-mammalian vertebrates among which toad shows the highest values and garden lizard the lowest. Among the invertebrates Pila globosa shows higher values of all the enzymes than Achatina fulica. The results obtained have been discussed in the lights of phylogeny and diet habits.