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Pole‐Shark (Galeorhinus galeus) : Seriated CT‐scanned Cross‐sections Every 1mm of the Rostral Extremity and Reconstructions
Author(s) -
LE FLOCHPRIGENT PATRICE P,
VERDEILLE Stéphane
Publication year - 2016
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.30.1_supplement.780.8
Subject(s) - anatomy , vertebral column , computed tomography , geology , biology , medicine , radiology
The 23 first cm of a pole‐shark (Galeorhinus galeus, Linnnaeus 1758 ) which total length was estimated to 1m, was CT‐scanned every 1 mm. The shark had been frozen and the prelevment included the pectoral fins. The CT‐scan apparatus was a Siemens somatom definition with 64 detectors. The native, frontal cross‐sections were reconstructed every 1 mm all along the longitudinal axis. 28 external or deep reconstruction’ aspects were defined. The morphological and topographical results were interesting and numerous. The eyes were voluminous inside large orbital cavities. The encephalon laid in a narrow and stretched intra‐cranial cavity with three vesicles. The cervical vertebrae were “diabolo” shaped surrounding the medulla. The digestive apparatus was placed just below the anterior face of the vertebral column. The seriated CT‐scan with reconstruction is actually an unvaluable method for the morphological studies. This method is completetely justified as numerous species are endangered.