. The biology of marine animals. Marine animals; Physiology, Comparative. RESPIRATION 189 creased C02, rise in acidity and elevation of temperature raise unloading tensions (Fig. ). It has been computed that the effect of tissue levels of C02 on the dissociation of oxyhaemocyanin would account for about a third of the oxygen exchange in the squid (Loligo). Cephalopods, in general, are moderately to highly active animals, living in well-aerated. 20 90 WO 30 40 50 60 70 80 Oxygen Tension (mm Hg) Fig. Oxygen Dissociation Curves of Haemocyanins of Several Arthropods and Molluscs Limulus
. The biology of marine animals. Marine animals; Physiology, Comparative. RESPIRATION 189 creased C02, rise in acidity and elevation of temperature raise unloading tensions (Fig. ). It has been computed that the effect of tissue levels of C02 on the dissociation of oxyhaemocyanin would account for about a third of the oxygen exchange in the squid (Loligo). Cephalopods, in general, are moderately to highly active animals, living in well-aerated. 20 90 WO 30 40 50 60 70 80 Oxygen Tension (mm Hg) Fig. Oxygen Dissociation Curves of Haemocyanins of Several Arthropods and Molluscs Limulus polyphemus, pH 7-35, 25°C; Busycon canaliculatum, pH 8-35, 25CC; Homarus americanus, pH 7-72, 25CC; Loligo vulgaris, 5-3 mm CO,, 20°C (from various sources). waters, and their haemocyanins function to the full in oxygen transport under such conditions (130, 169). The oxygen capacities of other haemocyanin-containing bloods are rather low, ranging from 1 to 3 vols% in gastropods, decapod crustaceans and Limulus. The dissociation curves are similar in shape to those of haemoglobins and are very diverse. On warming there is a marked increase in loading and unloading tensions, but the effects of acidity and COa. 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 Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers
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