. Comparative physiology of vertebrate respiration. Vertebrates -- Respiration; Physiology, Comparative. 26 VERTEBRATE RESPIRATION (a) Wrasse 3 ;a. (b) Dragonet Fig. 8. (a) Differential pressures recorded from several teleost fishes to show the importance of the suction pump (shaded) in bottom-living forms. The numbering corresponds to the four phases of Fig. 4c. Note the absence of any reversal in the plaice. (After Hughes, G. M., /. exp. Biol. Vol. 37, 1960.) (b)The ejection of the respiratory current dorsally from the opercular cavities is illustrated for the gurnard and dragonet. the latte
. Comparative physiology of vertebrate respiration. Vertebrates -- Respiration; Physiology, Comparative. 26 VERTEBRATE RESPIRATION (a) Wrasse 3 ;a. (b) Dragonet Fig. 8. (a) Differential pressures recorded from several teleost fishes to show the importance of the suction pump (shaded) in bottom-living forms. The numbering corresponds to the four phases of Fig. 4c. Note the absence of any reversal in the plaice. (After Hughes, G. M., /. exp. Biol. Vol. 37, 1960.) (b)The ejection of the respiratory current dorsally from the opercular cavities is illustrated for the gurnard and dragonet. the latter fish most of the respiratory current enters the spiracles, whose valves are well developed, and as they operate rhythmic- ally produce the characteristic 'winking' movements of these fish. In fishes which only spend part of their time on the bottom, intermediate stages are found in the relative development of the pressure and suction pumps. In the bony fishes these forms also show an intermediate condition in the development of the branchiostegal rays which form an important part of the highly developed suction pumps of benthic Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hughes, G. M. (George Morgan). Cambridge, Mass. , Harvard University Press
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