ISSN:
1095-8649
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
The distribution of digestive enzymes was studied using histoenzymological methods in yellowtail and winter flounder larvae reared on three different diets: live food, weaned at day 15, or starved. Alkaline phosphatase, dipeptidyl peptidase IV, aminopeptidase M and esterase were present at 3 days post-hatch and became differentially distributed coinciding with morphological development. For larvae fed a live diet, activity of these enzymes was present in the intestine of both species and rectum of yellowtail flounder. Alkaline phosphatase was also present in the post-oesophageal swelling (stomach anlage) of winter flounder. Activity of all enzymes was absent in starved winter flounder larvae and a decrease in aminopeptidase M and esterase activity occurred in starved yellowtail flounder larvae. Acid phosphatase was not identified in either species. The eVect of weaning on enzymatic activity was not evaluated fully as the larvae did not survive long enough after the introduction of the artificial diet to complete experimentation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1095-8649.1998.tb01831.x
