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Hystological and ultrastructural study of opercular anomalies in gilthead sea bream larvae (Sparus aurata).

GALEOTTI M
•
BERALDO P
•
DE DOMINIS S
altro
PINOSA M
1999
  • journal article

Periodico
BULLETIN OF THE EUROPEAN ASSOCIATION OF FISH PATHOLOGISTS
Abstract
The high incidence of opercular deformities appearing in Mediterranean marine hatcheries is an important problem which is causing considerable economic losses. The aetiology of this syndrome is not yet well understood. In this study a histological and ultrastructural description of gilthead sea bream larvae (Sparus aurata) affected with anomalies of the opercular complex was carried out. The first opercular alterations were detected 17 days after hatching, when the opercular support in the branchio-cranial area was still cartilaginous and the only structure of the opercle is a connective laminae composed of a dense connective tissue. No degenerative alterations or inflammatory processes were found in the opercular tissues. The electron microscopy observations on 30 days-old larvae allowed the identification of abnormality in the mineral deposition within the dermal ossification in curled opercles. These preliminary observations suggest that an early alteration in the connective tissue formation and an abnormal mineralisation of the fibrous bone can predispose opercular folding.
WOS
WOS:000082526200009
Archivio
http://hdl.handle.net/11390/741266
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0347537107
Diritti
metadata only access
Visualizzazioni
3
Data di acquisizione
Apr 19, 2024
Vedi dettagli
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