Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer)

Asian seabass (Lates calcarifer) is a food fish of increasing aquaculture importance. In order to improve our understanding on the digestive system and feeding of this species, morphological and histological features of the gut were studied. Morphologically, the Asian seabass gut is defined by a sho...

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Main Authors:	Purushothaman, Kathiresan, Lau, Doreen, Saju, Jolly M., Musthaq SK, Syed, Lunny, Declan Patrick, Vij, Shubha, Orbán, László
Format:	Online
Language:	English
Published:	PeerJ Inc. 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5012279/

id	pubmed-5012279
recordtype	oai_dc
spelling	pubmed-50122792016-09-15 Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer) Purushothaman, Kathiresan Lau, Doreen Saju, Jolly M. Musthaq SK, Syed Lunny, Declan Patrick Vij, Shubha Orbán, László Aquaculture, Fisheries and Fish Science Asian seabass (Lates calcarifer) is a food fish of increasing aquaculture importance. In order to improve our understanding on the digestive system and feeding of this species, morphological and histological features of the gut were studied. Morphologically, the Asian seabass gut is defined by a short and muscular esophagus, well-developed stomach and comparatively short intestine. Mucous secreting goblet cells reactive to PAS (Periodic Acid Schiff) and AB (Alcian Blue) stain were present throughout the esophagus. The stomach was sac-like and could be distinguished into the cardiac, fundic and pyloric regions. Gastric glands and mucus cells were predominately present in the cardiac and fundic regions. Five finger-like pyloric caeca were present between the stomach and intestine. The intestine was a short, tubular structure with no morphological differences between the various regions. Histologically, the intestinal regions were similar, the main difference being in the number of goblet cells that increased from anterior to posterior intestine, with 114 ± 9, 153 ± 7 and 317 ± 21 goblet cells in the anterior, mid and posterior regions, respectively. The intestinal epithelium stained positively for PAS, but the staining was stronger for acidic glycoproteins. The rectum was similar to intestine, except for increased goblet cell numbers (anterior rectum: 529 ± 26; posterior rectum: 745 ± 29). Gut morpho-histology did not respond to salinity changes, however, there was a significant reduction of mucosal height, goblet cell numbers and muscularis thickness upon food deprivation. PeerJ Inc. 2016-08-24 /pmc/articles/PMC5012279/ /pubmed/27635341 http://dx.doi.org/10.7717/peerj.2377 Text en ©2016 Purushothaman et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Purushothaman, Kathiresan Lau, Doreen Saju, Jolly M. Musthaq SK, Syed Lunny, Declan Patrick Vij, Shubha Orbán, László
spellingShingle	Purushothaman, Kathiresan Lau, Doreen Saju, Jolly M. Musthaq SK, Syed Lunny, Declan Patrick Vij, Shubha Orbán, László Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer)
author_facet	Purushothaman, Kathiresan Lau, Doreen Saju, Jolly M. Musthaq SK, Syed Lunny, Declan Patrick Vij, Shubha Orbán, László
author_sort	Purushothaman, Kathiresan
title	Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer)
title_short	Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer)
title_full	Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer)
title_fullStr	Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer)
title_full_unstemmed	Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer)
title_sort	morpho-histological characterisation of the alimentary canal of an important food fish, asian seabass (lates calcarifer)
description	Asian seabass (Lates calcarifer) is a food fish of increasing aquaculture importance. In order to improve our understanding on the digestive system and feeding of this species, morphological and histological features of the gut were studied. Morphologically, the Asian seabass gut is defined by a short and muscular esophagus, well-developed stomach and comparatively short intestine. Mucous secreting goblet cells reactive to PAS (Periodic Acid Schiff) and AB (Alcian Blue) stain were present throughout the esophagus. The stomach was sac-like and could be distinguished into the cardiac, fundic and pyloric regions. Gastric glands and mucus cells were predominately present in the cardiac and fundic regions. Five finger-like pyloric caeca were present between the stomach and intestine. The intestine was a short, tubular structure with no morphological differences between the various regions. Histologically, the intestinal regions were similar, the main difference being in the number of goblet cells that increased from anterior to posterior intestine, with 114 ± 9, 153 ± 7 and 317 ± 21 goblet cells in the anterior, mid and posterior regions, respectively. The intestinal epithelium stained positively for PAS, but the staining was stronger for acidic glycoproteins. The rectum was similar to intestine, except for increased goblet cell numbers (anterior rectum: 529 ± 26; posterior rectum: 745 ± 29). Gut morpho-histology did not respond to salinity changes, however, there was a significant reduction of mucosal height, goblet cell numbers and muscularis thickness upon food deprivation.
publisher	PeerJ Inc.
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5012279/
_version_	1613644098989719552

Morpho-histological characterisation of the alimentary canal of an important food fish, Asian seabass (Lates calcarifer)

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