Table XII. 

 Mean blood chloride concentration + S. E. in P. aztecus 

 during the time course of salinity-temperature adaptation. 



Control Temperature 25°C Control Salinity 15 /oo 



Test Temperature 18°C 



Sampling Test Salinity - °/oo 

 Interval 



(hour) 2 5 10 15 25 36 



292-1^1.1 292+1.1 292-1^1.1 292+1.1 292+^1.1 292-|^l.l 



1 232+^15. 280-t^4.0 274+5.0 292-)^ 1 . 8 302+_3.6 338-1^4.3 



2 232+^10.0 267^^3.5 280-1^4.3 285h^2.0 311+_2.9 3444^5.8 

 4 198h^11.3 2604^5.2 264-1^6.7 288h^6.0 306j*^7.3 375+3.7 

 6 200+8.3 250-t^4.6 26U4.9 284-1^7.6 300^^6.7 389h^8.3 



10 186^^7.6 243+5 7 269-f^ 5 . 1 297+^2.6 308+3.9 407-|^8.5 



16 190jt^ 9.0 2474^2.5 246+14.1 297'4^4.2 306^^5.0 410j|^9.1 



24 184-1^6.7 234-f^6.7 2704^8.1 285^^5.6 323-+ 2.9 424-1^6.7 



48 2094^5.0 244+15.1 274+6.3 292-)^ 4.2 324+3.5 424^^8.0 



72 216-|^ 7.2 242+ 3.2 295-i^ 7.1 292+ 6.0 333+ 2.0 422+_ 7.4 



96 232-(^6.4 251+^5.3 292-1^9.9 294-1^4.2 330j^ 4 . 3 406ji^5.3 



168 2464^8.2 252+6.3 290+3.3 282+' 6.3 339jt^3.4 429+3.9 



Avg 228+ 5.4 258+ 2.7 278+ 2.3 290+ 1.3 308+ 5.0 381+ 6.1 



B13 



