...Ray Brasil Bueno de Souza; Wilfried Klein ABSTRACT The respiratory system of chelonians needs to function within a mostly solid carapace, with ventilation depending on movements of the flanks. When submerged, inspiration has to work against hydrostatic pressure. We examined breathing mechanics...

... is more similar in birds that have the same functional constraint, i.e. specialization to a locomotor mode. Uncinate processes are short in walking birds, long in diving species and of intermediate length in non-specialist birds. These results demonstrate that differences in the breathing mechanics...

... cranially during physical exertion. * Author for correspondence (e-mail: [email protected] ) 24 3 2003 © The Company of Biologists Limited 2003 2003 Tupinambis merianae lizard post-hepatic septum locomotion ventilation breathing mechanics The effects of locomotion...