940 

 920 

 900 

 880 

 860 

 840 

 820 

 800 

 780 

 760 



S ^"0 



E 

 I 



720 



< 700 



_l 

 O 

 2 680 



to 

 o 



660 



640 

 620 

 600 

 580 

 560 

 540 

 520 

 500 

 480 

 460 



-/ / 



ACCL 32»C 

 TEST I8"C 



\ 



J6%. 



/ 



i 



/^^' 



257o, 



CONTROL 



I 



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140 



135 



130 



125 



120 



115 



110 



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o 



100 



95 



90 



80 



75 



70 



12 



10 



16 

 TIME-ht)ur* 



24 48 72 96 



168 



Figure 54. Comparison of the blood osmotic levels of Penaeus aztecus 

 during adaptation to various salinities at 18°C. The control conditions 



were 15°/ooS and 32°C 



119 



