. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COENOBITA—\ON AND ACID-BASE STATUS 437 20 R C02 torr 30 20 15 10 o E E I fO O O X 10. 70 74 76 78 PH FIGURE 6. [HCO3~] versus pH diagram indicating changes in acid-base status in prebranchial he- molymph of Coenobita clypeatus during temperature acclimation of hydrated animals. 1 and 2 indicate temperature increase and decrease respectively. Open symbols indicate acid-base status of rehydrated animals at corresponding acclimation temperatures. P,CO2 isopleths were constructed using mean values of for pK', and 0
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COENOBITA—\ON AND ACID-BASE STATUS 437 20 R C02 torr 30 20 15 10 o E E I fO O O X 10. 70 74 76 78 PH FIGURE 6. [HCO3~] versus pH diagram indicating changes in acid-base status in prebranchial he- molymph of Coenobita clypeatus during temperature acclimation of hydrated animals. 1 and 2 indicate temperature increase and decrease respectively. Open symbols indicate acid-base status of rehydrated animals at corresponding acclimation temperatures. P,CO2 isopleths were constructed using mean values of for pK', and mmole T1 torr"1 for a. For graphical purposes the average slope of the CO2 buffer line is indicated. An OH~/H+ ratio of ^9 is close to values reported by Truchot (1973) for the intertidal shore crab Carcinus (^12). Since values for aquatic species are around 16-25 (Howell et al, 1973) it would appear that relative alkalinity decreases with reliance on air- TABLE IV Variation in major determinants of extracellular acid-base balance in Coenobita clypeatus as a result of (a) dehydration and (b) rehydration at 18 and 30° C' (a) Dehydration (b) Rehydration Variable 18°C A 30°C A 18°C A 30°C A pH * * + + P,CO, + * ceo, +* + * HCO3~ + + CO2 + * OH7FT * * + + Lactate * + + * Protein ft pK', * + + AH+m + ± + ± ± ± AH+c + ± ± ± ± A[Ca2+] ± ± ± + ± A[HOV] ± ± + ± + ± Units and symbols—as for Table 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 Labo
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
