Digestive physiology of fish larvae during ontogenic development: A brief overview
275 / 103
Keywords:
Digestive enzymes, Fish larvae, Gut evacuation, Ontogenic developmentAbstract
The knowledge of digestive physiology of fish larvae is the most crucial for the development of proper feeding strategies to fulfill their nutritional requirements. The yolk sac exhaustion, mouth opening and food consumption should be synchronized in such a way that the consumed food will be digested efficiently resulting higher survival and growth of larvae. This review focuses on thc morpho-functional changes occuring the digestive system of fish during ontogenic development. Mouth gape plays important role in larval feeding. Development and regulatin of the digestive enzymes depend on the progressive changes in the digestive tract. This is either genetically programmed or induced by the corresponding substrate in the food. Protease and lipase activities show variations during the shifting phase of feeding. Trypsin and chymotryspin play a major role among the serine proteases in the early development in all cyprinids. which lack a true stomach. The activity of these proteases is associated with pancreatic secretions. The pronounced amylase activity in some fish at the first feeding suggests the importance of carbohydrate metabolism in ontogeny of these species. Microorganism play important role in digestion. The morpho-functional changes of digestive system during ontogenesis influcuce the gut evacuation rate. This information will be useful for the formulation of artilicial feed for fish larvae.Downloads
Download data is not yet available.
Downloads
Submitted
2011-08-02
Published
2005-11-05
Issue
Section
Review Article
License
The copyright of the articles published in The Indian Journal of Animal Sciences is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.
How to Cite
Chakrabarti, R., & Sharma, J. G. (2005). Digestive physiology of fish larvae during ontogenic development: A brief overview. The Indian Journal of Animal Sciences, 75(11). https://epubs.icar.org.in/index.php/IJAnS/article/view/8262