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http://hdl.handle.net/10553/71946
Título: | Morphological structure of the aortic wall in three Delphinid species with shallow or intermediate diving habits: Evidence for diving adaptation | Autores/as: | Mompeó Corredera, Blanca Rosa Pérez Santana, Lilian Rosa Fernández Rodríguez, Antonio Jesús Saavedra Santana, Pedro Rivero Santana, Miguel Antonio Arbelo Hernández, Manuel Antonio Arregui Gil, Marina Suarez-Santana, Cristian Bernaldo de Quirós Miranda, Yara |
Clasificación UNESCO: | 3105 Peces y fauna silvestre 310907 Patología |
Palabras clave: | Mechanical Design Lamellar Unit Tunica Media Arteries Elastin, et al. |
Fecha de publicación: | 2020 | Publicación seriada: | Journal of Morphology | Resumen: | Some modifications in the vascular system of marine mammals provide adaptive advantages for diving. This study analyses the organisation of the aortic wall in dolphins, observing artery changes in volume and blood pressure for diving behaviour. Samples of three aortic segments (ascending, thoracic and abdominal) of three dolphin species were processed for histological and morphometric studies. The three dolphin species used, striped dolphin (Stenella coeruleoalba), Atlantic spotted dolphin (Stenella frontalis) and common dolphin (Delphinus delphis), have shallow or intermediate diving habits. Our results indicated that the components of the aortic wall of the dolphins had different dispositions in the three selected segments. The aortic wall decreased in thickness along its length due to a loss of the lamellar units in the tunica media and a thinning of the main elements of the lamellar units along the artery. The life stage had little influence on the thickness of the aortic wall except for the ascending aorta. The weight, body length, species or sex of the specimen did not significantly influence the thickness of the wall or the lamellar units. In summary, the histological and morphometric aortic structure in dolphins, in relation to the studied parameters, seems to be similar to that previously described of terrestrial mammals such as pigs, except for a larger difference in the proportion of lamellar units between the ascending and thoracic segments. | URI: | http://hdl.handle.net/10553/71946 | ISSN: | 0362-2525 | DOI: | 10.1002/jmor.21105 | Fuente: | Journal Of Morphology [ISSN 0362-2525], v. 281 (3), p. 377-387 |
Colección: | Artículos |
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