Cetaceans Humerus Radiodensity by CT: A Useful Technique Differentiating between Species, Ecophysiology, and Age.
bone
cetaceans
computed tomography
radiodensity
Journal
Animals : an open access journal from MDPI
ISSN: 2076-2615
Titre abrégé: Animals (Basel)
Pays: Switzerland
ID NLM: 101635614
Informations de publication
Date de publication:
13 Jul 2022
13 Jul 2022
Historique:
received:
09
05
2022
revised:
05
07
2022
accepted:
11
07
2022
entrez:
27
7
2022
pubmed:
28
7
2022
medline:
28
7
2022
Statut:
epublish
Résumé
Cetaceans are mammals that underwent a series of evolutionary adaptations to live in the aquatic environment, including morphological modifications of various anatomical structures of the skeleton and their bone mineral density (BMD); there are few studies on the latter. BMD is related to the radiodensity measured through computed tomography (CT) in Hounsfield units (HU). This work aimed to test and validate the usefulness of studying humeral bone radiodensity by CT of two cetacean species (the Atlantic spotted dolphin and the pygmy sperm whale) with different swimming and diving habits. The radiodensity was analysed at certain levels following a new protocol based on a review of previous studies. Humeral radiodensity values were related to four aspects: species, diving behaviour, swimming activity level, and age. We observed that the consistent differences in the radiodensity of the cortical bone of the distal epiphysis between animals of different life-history categories suggest that this bone portion could be particularly useful for future ontogenetic studies. Hence, this technique may be helpful in studying and comparing species with different ecophysiologies, particularly distinguishing between swimming and diving habits.
Identifiants
pubmed: 35883340
pii: ani12141793
doi: 10.3390/ani12141793
pmc: PMC9311750
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Università G. D'Annunzio - Chieti - Italy
ID : 005387650408571243
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