...Michael S. Hedrick; David R. Jones ABSTRACT The purpose of this study was to investigate the roles of branchial and gas bladder reflex pathways in the control of gill ventilation and air-breathing in the bowfin Amia calva . We have previously determined that bowfin use two distinct air-breathing...

...Matthieu R. Gervais; Bruce L. Tufts ABSTRACT The purpose of this study was to examine the subcellular distribution and isoenzyme characteristics of carbonic anhydrase from the gills and respiratory air bladder of bowfin Amia calva , a primitive air-breathing fish. Separation of subcellular...

... was undertaken to determine the significance of air-breathing in two fish species while exercising in oxygen-rich water. Oxygen consumption from air and water was measured during mild activity in bowfin ( Amia calva ) and spotted gar ( Lepisosteus oculatus ) by sealing a fish in an acrylic flume that contained...

...Michael S. Hedrick; David R. Jones ABSTRACT The mechanisms and physiological control of air-breathing were investigated in an extant halecomorph fish, the bowfin ( Amia calva ). Air flow during aerial ventilation was recorded by pneumotachography in undisturbed Amia calva at 20–24°C while aquatic...

...William K. Milsom; David R. Jones ABSTRACT Single nerve fibre discharge was recorded from mechanoreceptors associated with the air-breathing organ in double-pithed specimens of the bowfin, Amia calva L. These receptors were innervated by the vagus nerve and although their exact location...