... mitochondria. Morphological changes in the trachea were examined using confocal imaging. We used transmission electron microscopy to quantify muscle and mitochondrial density in the flight muscle. The respiratory morphology was not significantly different between developmental oxygen groups. These results...

... allometry Trachea Larynx Vocal tract Max-Planck-Gesellschaft Fonds Wetenschappelijk Onderzoek http://dx.doi.org/10.13039/501100003130 12N5517N G034720N Fonds Wetenschappelijk Onderzoek http://dx.doi.org/10.13039/501100003130 German Ministry of Energy...

... reconstructions were performed of segments of the trachea and bronchi of the pinnipeds and bronchi of the cetaceans for each pressure treatment. All specimens examined demonstrated significant decreases in airway volume with increasing pressure, with those of the harbor seal and common dolphin nearing complete...

...John Davenport; Liz Cotter; Emer Rogan; Denis Kelliher; Colm Murphy SUMMARY Cetaceans are neckless, so the trachea is very short. The upper respiratory tract is separate from the mouth and pharynx, and the dorsal blowhole connects, via the vestibular and nasopalatine cavities, directly...

... by The Company of Biologists Ltd 2013 auditory tympanum katydid tettigoniid Orthoptera laser vibrometry trachea pseudophylline Onomarchus uninotatus Tettigoniid (bushcricket) acoustic communication is under several different evolutionary selection pressures. To improve mate attraction...

...Colm Murphy; Denis Kelliher; John Davenport SUMMARY The leatherback turtle regularly undertakes deep dives and has been recorded attaining depths in excess of 1200 m. Its trachea is an almost solid, elliptical-section tube of uncalcified hyaline cartilage with minimal connective tissue between...

.... * Author for correspondence ( [email protected] ) † Present address: Free Waldorf School, Wernstein, 95336 Mainleus, Germany 28 6 2011 23 3 2012 © 2012. 2012 Coleoptera allometry insect oxygen delivery respiration trachea scaling metabolism Oxygen delivery...

... of the tongue as a vocal articulator. * Author for correspondence ( [email protected] ) 12 10 2011 © 2012. 2012 birdsong beak gape tongue movements trachea vocal production monk parakeets In recent years birdsong has become the focus of many scientists interested...

... of Conservation Ecology and Entomology, Faculty of AgriSciences, Stellenbosch University,Private Bag X1, Matieland 7602, Stellenbosch, South Africa (e-mail: [email protected] ) 13 8 2008 © The Company of Biologists Limited 2008 2008 trachea respiration metabolic rate cyclic gas exchange...

... respiration trachea scaling American locust Schistocerca americana Respiratory systems play a crucial intermediary role in the delivery of oxygen from the atmosphere to an animal's cells, and the volume of a respiratory system can provide an index of the investment made by an animal in its...

... (or, gut bug guarding). Termites may eschew the DGC because periodic flushing of the tracheal system with air may harm the obligate anaerobes upon which the lower termites depend for survival on their native diet of chewed wood. termite Zootermopsis nevadensis trachea spiracle oxygen symbiont...

... in grasshoppers. Am. Zool . 37 , 73 –81. Hetz, S. K., Psota, E. and Wasserthal, L. T. ( 1999 ). Roles of aorta, ostia and tracheae in heartbeat and respiratory gas exchange in pupae of Troides rhadamantus Staudinger 1888 (Ornithoptera, Papilionidae). Int. J. Insect Morph . 28 , 131 –144. Hetz...

... of the two types of flies. The final release of EH normally occurs approximately 40 min before ecdysis. It is correlated with cyclic guanosine monophosphate (cGMP) production in selected neurons and tracheae, by an elevation in the heart rate and by the filling of the new tracheae with air. Injection...