Ontogeny of the digestive tract of Centropomus parallelus larvae

Ontogeny of the digestive tract of Centropomus parallelus larvae

Development of the digestive tract and accessory glands of larvae of the fat snook Centropomus parallelus was examined under light microscopy, from hatching to 60 day post-hatching (dph). At hatching, the digestive tract is straight and composed by a cubic cell layer. The exogenous feeding starts at...

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Bibliographic Details
Published in:Fish physiology and biochemistry Vol. 41; no. 2; pp. 549 - 559
Main Authors: Teles, Andressa, Melo Costa, Wanessa, Ammar, Dib, Rauh Müller, Yara M., Nazari, Evelise M., Ronzani Cerqueira, Vinicius
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-04-2015
Springer Nature B.V
Subjects:
Animal Anatomy
Animal Biochemistry
Animal Physiology
Animals
Aquaculture
Aquaculture - methods
Biomedical and Life Sciences
Body Weights and Measures
Centropomus parallelus
Diet
Digestive system
Eggs
Esophagus
Food
Freshwater & Marine Ecology
Gastrointestinal Tract - growth & development
Hatching
Histology
Larva - growth & development
Larvae
Life Sciences
Light microscopy
Morphogenesis - physiology
Morphology
Perciformes - growth & development
Teeth
Time Factors
Weaning
Zoology
Brazil
United States > US
Development
Histology
Marine fish farming
Larviculture
Fat snook
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Summary:Development of the digestive tract and accessory glands of larvae of the fat snook Centropomus parallelus was examined under light microscopy, from hatching to 60 day post-hatching (dph). At hatching, the digestive tract is straight and composed by a cubic cell layer. The exogenous feeding starts at 3 dph, concomitantly with the mouth opening and subdivision of the rudimentary stomach and esophagus. At 4 dph, the intestine has three sectins, and vacuoles are observed in the posterior section, indicating the beginning of protein digestion and absorption. The pharyngeal teeth appear at 9 dph, and goblet cells appear at 13 dph in the esophagus. Gastric glands appear at 30 dph, marking the beginning of weaning. The disappearance of supranuclear vacuoles in the posterior intestine occurs at 35 dph, suggesting efficiency of extracellular digestion. This study shows that C. parallelus larvae is able to start weaning 15 days earlier than reported in earlier studies, increasing the success of larviculture.
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ISSN:0920-1742
1573-5168
DOI:10.1007/s10695-015-0028-y