. The comparative physiology of respiratory mechanisms. Respiration. Periophthalmus schlosseri on (Eggert.) from a marine existence to a life mainly in moist air. The most specialized is Periophthalmus. Figure 18 shows the mouth and branchial cavity characteristically blown up with air. The gill lamellae have coa- lesced leaving only narrow slits, and the gills are un- suitable for water respira- tion (E. Schottle, 1932). If the spaces can be air-filled they may assist the respira- tion in air. When in fresh water the concentration of oxygen be- comes reduced, many fishes and some other
. The comparative physiology of respiratory mechanisms. Respiration. Periophthalmus schlosseri on (Eggert.) from a marine existence to a life mainly in moist air. The most specialized is Periophthalmus. Figure 18 shows the mouth and branchial cavity characteristically blown up with air. The gill lamellae have coa- lesced leaving only narrow slits, and the gills are un- suitable for water respira- tion (E. Schottle, 1932). If the spaces can be air-filled they may assist the respira- tion in air. When in fresh water the concentration of oxygen be- comes reduced, many fishes and some other water-breath- ing animals will come to the surface, which by diffusion exchange with the atmos- phere will present a micro- stratification with a compar- atively high oxygen tension in the very surface. This reaction takes place in the dragon fly larvae {Aeschna), according to Wallengren fFlG' 19' Aeschna larv* ° ° surface tor emergency respiration. (1914), when the oxygen (Wallengren.). 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 Krogh, August, 1874-1949. Philadelphia, University of Pennsylvania press
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectrespiration
