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Digestive tract ontogeny of Dicentrarchus labrax: implication in osmoregulation.
Dev Growth Differ. 2006 Apr; 48(3):139-51.DG

Abstract

The ontogeny of the digestive tract (DT) and of Na(+)/K(+)-ATPase localization was investigated during the early postembryonic development (from yolk sac larva to juvenile) of the euryhaline teleost Dicentrarchus labrax reared at two salinities: seawater and diluted seawater. Histology, electron microscopy and immunocytochemistry were used to determine the presence and differentiation of ion transporting cells. At hatching, the DT is an undifferentiated straight tube over the yolk sac. At the mouth opening (day 5), it comprises six segments: buccopharynx, esophagus, stomach, anterior intestine, posterior intestine and rectum, well differentiated at the juvenile stage (day 72). The enterocytes displayed ultrastructural features similar to those of mitochondria-rich cells known to be involved in active ion transport. At hatching, ion transporting cells lining the intestine and the rectum exhibited a Na(+)/K(+)-ATPase activity which increased mainly after the larva/juvenile (20 mm) metamorphic transition. The immunofluorescence intensity was dependent upon the stage of development of the gut as well as on the histological configuration of the analyzed segment. The appearance and distribution of enteric ionocytes and the implication of the DT in osmoregulation are discussed.

Authors+Show Affiliations

Adaptation Ecophysiologique et Ontogenèse, UMR 5171, GPIA, Université Montpellier II, Place E. Bataillon, CC 092, 34095 Montpellier, Cedex 05, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16573732

Citation

Giffard-Mena, Ivone, et al. "Digestive Tract Ontogeny of Dicentrarchus Labrax: Implication in Osmoregulation." Development, Growth & Differentiation, vol. 48, no. 3, 2006, pp. 139-51.
Giffard-Mena I, Charmantier G, Grousset E, et al. Digestive tract ontogeny of Dicentrarchus labrax: implication in osmoregulation. Dev Growth Differ. 2006;48(3):139-51.
Giffard-Mena, I., Charmantier, G., Grousset, E., Aujoulat, F., & Castille, R. (2006). Digestive tract ontogeny of Dicentrarchus labrax: implication in osmoregulation. Development, Growth & Differentiation, 48(3), 139-51.
Giffard-Mena I, et al. Digestive Tract Ontogeny of Dicentrarchus Labrax: Implication in Osmoregulation. Dev Growth Differ. 2006;48(3):139-51. PubMed PMID: 16573732.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Digestive tract ontogeny of Dicentrarchus labrax: implication in osmoregulation. AU - Giffard-Mena,Ivone, AU - Charmantier,Guy, AU - Grousset,Evelyse, AU - Aujoulat,Fabien, AU - Castille,René, PY - 2006/4/1/pubmed PY - 2006/7/4/medline PY - 2006/4/1/entrez SP - 139 EP - 51 JF - Development, growth & differentiation JO - Dev. Growth Differ. VL - 48 IS - 3 N2 - The ontogeny of the digestive tract (DT) and of Na(+)/K(+)-ATPase localization was investigated during the early postembryonic development (from yolk sac larva to juvenile) of the euryhaline teleost Dicentrarchus labrax reared at two salinities: seawater and diluted seawater. Histology, electron microscopy and immunocytochemistry were used to determine the presence and differentiation of ion transporting cells. At hatching, the DT is an undifferentiated straight tube over the yolk sac. At the mouth opening (day 5), it comprises six segments: buccopharynx, esophagus, stomach, anterior intestine, posterior intestine and rectum, well differentiated at the juvenile stage (day 72). The enterocytes displayed ultrastructural features similar to those of mitochondria-rich cells known to be involved in active ion transport. At hatching, ion transporting cells lining the intestine and the rectum exhibited a Na(+)/K(+)-ATPase activity which increased mainly after the larva/juvenile (20 mm) metamorphic transition. The immunofluorescence intensity was dependent upon the stage of development of the gut as well as on the histological configuration of the analyzed segment. The appearance and distribution of enteric ionocytes and the implication of the DT in osmoregulation are discussed. SN - 0012-1592 UR - https://www.unboundmedicine.com/medline/citation/16573732/Digestive_tract_ontogeny_of_Dicentrarchus_labrax:_implication_in_osmoregulation_ L2 - https://doi.org/10.1111/j.1440-169X.2006.00852.x DB - PRIME DP - Unbound Medicine ER -