. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. Respiration and Metabolism 24B reflecting an intrinsic activity or nutritive cycle, has been claimed for the catfish—measured, although not necessarily maintained, under conditions of total darkness and constant temperature and water flow. A consistently higher oxygen consumption (about 50 per cent) was demonstrated in the afternoon and evening, compared with that of the forenoon.'"^ Depressions in the oxygen consumption correlated with both temperature changes and food shortage have been pointed out in var


. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. Respiration and Metabolism 24B reflecting an intrinsic activity or nutritive cycle, has been claimed for the catfish—measured, although not necessarily maintained, under conditions of total darkness and constant temperature and water flow. A consistently higher oxygen consumption (about 50 per cent) was demonstrated in the afternoon and evening, compared with that of the forenoon.'"^ Depressions in the oxygen consumption correlated with both temperature changes and food shortage have been pointed out in various warm-blooded animals. The chicken, for instance, has a metabolic maximum in the morning (78° F., air tem^ierature) and a low .28 1 .24 E E .20 .16 Q. 2 (A .12 z O O .08 - .04- MELANOTUS. .010 .008 .006 - .004 .002 TALORCHESTIA. 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 Prosser, C. Ladd (Clifford Ladd), 1907-; Bishop, David W. Philadelphia, Saunders


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