. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. METABOLISM. 401 fact, Lee (1924) has shown that injection of carbonic acid or lactic acid into a grasshopper produces results quite similar to the present ones on immersion of the FIG. 6. Curves showing comparisions between average mean recovery times and rates and length of immersion in water and exposure to carbon dioxide in Melanoplus differentialis. Carbon dioxide data from Willis (1925). BLOOD pH. As previously pointed out the normal pH of the blood of the grasshopper, M. differ entialis, seems to be 6
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. METABOLISM. 401 fact, Lee (1924) has shown that injection of carbonic acid or lactic acid into a grasshopper produces results quite similar to the present ones on immersion of the FIG. 6. Curves showing comparisions between average mean recovery times and rates and length of immersion in water and exposure to carbon dioxide in Melanoplus differentialis. Carbon dioxide data from Willis (1925). BLOOD pH. As previously pointed out the normal pH of the blood of the grasshopper, M. differ entialis, seems to be (Bodine, 1926.) A careful study has been made of the blood of individuals through- out the present immersion and recovery experiments. Fig. 7, in which are plotted together results of experiments carried out for different periods of time, shows graphically the pH changes oc- curring in the blood during the anaerobic and recovery periods. A progressive lowering in pH values with length of immersion occurs and seems to reach a minimum at about Below this minimum the animal seems irreversibly affected. Upon re- covery, a slow blowing off of acids (HzCOs), probably occurs and the blood then gradually returns to its normal pH value. An interesting fact, indicated in Fig. 7, is that no marked changes in blood pH occur in immersed animals when removed from the water until after respiratory movements have become established. Upon careful examination of the animal it is found that initial respiratory movements upon recovery are extremely slow and of great depth. As recovery progresses the movements become more regular and normal. These changes in blood pH strongly. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
