Acipenser naccarii: fine structure of the alimentary canal with references to its ontogenesis
This study was aimed at investigating the anatomy and luminal surfaces of the entire gut of Acipenser naccarii, through optic and transmission and scanning electron microscopy (TEM and SEM). Two-year-old individuals as well as larval and post-larval developmental stages were studied. The results con...
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Published in | Journal of applied ichthyology Vol. 18; no. 4-6; pp. 329 - 337 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Science Ltd
01.12.2002
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Subjects | |
Online Access | Get full text |
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Summary: | This study was aimed at investigating the anatomy and luminal surfaces of the entire gut of Acipenser naccarii, through optic and transmission and scanning electron microscopy (TEM and SEM). Two-year-old individuals as well as larval and post-larval developmental stages were studied. The results confirm the gross morphology found in the entire genus Acipenser. The presence of numerous ciliated cells in the gastric and intestinal parts of the alimentary canal and a spiral valve show ancient features in these fish. From an aquaculture perspective, observations on the ontogenesis of the digestive system suggest that feeding should start as soon as the connection between oesophagus and stomach is established. Our observations indicate that A. naccarii reach this functional threshold not before the eighth day post-hatching (larval rearing temperature: 21 degree C). |
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Bibliography: | ark:/67375/WNG-XHD1SRX7-L ArticleID:JAI383 istex:4FB70D170AEB00DC1C6DCBC9E8D454A5D69CC417 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Conference-1 ObjectType-Feature-3 content type line 23 SourceType-Scholarly Journals-2 ObjectType-Feature-1 SourceType-Conference Papers & Proceedings-1 ObjectType-Conference-3 |
ISSN: | 0175-8659 1439-0426 |
DOI: | 10.1046/j.1439-0426.2002.00383.x |