Digestive System of Vertebrates: Fish: Dogfish

< back to Fish list > Reference list

THE DIGESTIVE SYSTEM OF VERTEBRATES

FISH: Dogfish

Table 8.9. (from CD Chapter 8 )
Proteinase activity in the pancreas of fish and amphibians

Enzyme activities expressed as the equivalent amount of bovine trypsin (casein or BAEE) or chymotrypsin (BTEE) under the same conditions. ^a measurements of enzyme activity in the pyloric cecal tissue may account for the lower values, ^b frogs were fed, ^c frogs fasted at 5 C, * group C: 0-20 µg RNase per gram of pancreatic tissue. (from Vonk and Western 1984)

Osmotic regulation in the dogfish

Figure 10.2. Osmotic regulation in a typical elasmobranch, the dogfish shark (Squalus acanthias). Values for NaCl, Na⁺, Cl^- and urea are given in mM or mEq per liter. Osmotic pressures (OP) of sea water (SW), body fluids and urine are given in mOsmoles per liter. (Modified from Kormanik 1992). (from CD Chapter 10)