<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The present study was conducted to observe morphological and histological changes in the developing digestive system during the ontogeny of featherback, Chitala chitala (Hamilton), from hatching to 30 days post hatch (dph). Three significant stages were identified during digestive tract development in featherback: (1) endotrophic (0-8 dph), (2) endoexotrophic (8-12 dph), and (3) exotrophic (12-30 dph). At hatching, the mouth was closed and the digestive tract was a straight tube. At 8 dph, the mouth was opened and the appearance of the esophagus was observed. Between 6-8 dph, the primordial liver and exocrine pancreas were observed. Intestinal enterocyte activity was observed before stomach development. The esophageal goblet cells, teeth, and taste buds developed 2 days after the opening of the mouth, at the time of exogenous feeding. The development of the stomach, gastric glands, and pyloric caeca took place between the 7 and 12 dph. Except the increase in size and complexity of the structures, no noticeable changes were observed after 12 dphin C. chitala during the experiment. Our findings in the current work provide valuable information which might be useful for improving current larval rearing techniques of this promising new candidate species for freshwater aquaculture diversification.</p></abstract>

The present study was conducted to observe morphological and histological changes in the developing digestive system during the ontogeny of featherback, Chitala chitala (Hamilton), from hatching to 30 days post hatch (dph). Three significant stages were identified during digestive tract development in featherback: (1) endotrophic (0-8 dph), (2) endoexotrophic (8-12 dph), and (3) exotrophic (12-30 dph). At hatching, the mouth was closed and the digestive tract was a straight tube. At 8 dph, the mouth was opened and the appearance of the esophagus was observed. Between 6-8 dph, the primordial liver and exocrine pancreas were observed. Intestinal enterocyte activity was observed before stomach development. The esophageal goblet cells, teeth, and taste buds developed 2 days after the opening of the mouth, at the time of exogenous feeding. The development of the stomach, gastric glands, and pyloric caeca took place between the 7 and 12 dph. Except the increase in size and complexity of the structures, no noticeable changes were observed after 12 dphin C. chitala during the experiment. Our findings in the current work provide valuable information which might be useful for improving current larval rearing techniques of this promising new candidate species for freshwater aquaculture diversification.

Histomorphological study of the gut developmental pattern in early life history stages of featherback, Chitala chitala (Hamilton)

Aquatic Bioresource Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata-700019, India

Regional Research Centre, Central Institute of Freshwater

Fisheries & Aquatic Life

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The present study was conducted to observe morphological and histological changes in the developing digestive system during the ontogeny of featherback,...

Histomorphological study of the gut developmental pattern in early life history stages of featherback, Chitala chitala (Hamilton)

Published Online: May 14, 2015

Page range: 25 - 35

Received: Jul 17, 2014

Accepted: Dec 19, 2014

DOI: https://doi.org/10.1515/aopf-2015-0003

Keywords
endangered fish, fish larvae, digestive system

© Archives of Polish Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Histomorphological study of the gut developmental pattern in early life history stages of featherback, Chitala chitala (Hamilton)

Published Online: May 14, 2015

Page range: 25 - 35

Received: Jul 17, 2014

Accepted: Dec 19, 2014

DOI: https://doi.org/10.1515/aopf-2015-0003

Keywordsendangered fish, fish larvae, digestive system

© Archives of Polish Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
endangered fish, fish larvae, digestive system