Page 



Time Course of Blood Ion Regulation 69 



Effect of 25°C acclimation on chloride 



regulation 69 



Effect of 32°C acclimation on chloride regulation . . 73 



Effect of 18°C acclimation on chloride regulation . . 77 



Time Course of Regulation of Other Ions 77 



Calcium ion regulation 81 



Magnesium ion regulation 88 



Potassium ion regulation 99 



Effect of Salinity Change on Osmotic and Ionic 



Concentration 106 



Osmoconcentration 113 



Chloride concentration 120 



Calcium concentration 129 



Magnesium concentration 139 



Potassium concentration 145 



Osmotic and Ionic Regulation in Relation to 



the Isosmotic Line 152 



Osmoregulation 152 



Chloride regulation 154 



Calcium regulation 154 



Magnesium regulation 157 



Potassium regulation 159 



Interaction of Salinity and Temperature on 



Osmotic and Ionic Regulation 159 



Osmoregulation 159 



Blood chloride ion 165 



Calcium ion 169 



Magnesium ion 169 



Potassium ion 174 



Effect of Sex on Osmotic and Ionic Regulation 178 



Oxygen Consumption in Time Course of Adaptation 186 



Effect of 25°C acclimation on oxygen 



consumption 186 



