22. 



18. 

 14. 

 10. 



6. 



2. 



ACCL IS'C 

 TEST 32^. 



/ 



^^i?f.iji»Sii9Ri«iktJir.?.rT.-.rTT; 



.^^^' 



/> CONTROL 



^^ 36 «>o 



i5%r' 



- c 



:.-.:T:.-.atAfi»A»»',A»»»»jw4>.«'"*~*' 



27o< 



12 



10 



' //- 



16 



TIME -hours 



340 

 300 

 260 

 220 

 180 

 140 

 100 

 60 

 20 



24 48 72 96 



168 



Figure 76. Comparison of blood magnesium levels of Penaeus aztecus dur- 

 ing adaptation to various salinities at 18°C (section A^of the figure), 

 25°C (B) , and 32°C (C) . The control conditions were 15°/ooS and 18°C 



147 



