1916 



Shelfordj on Physiological Differences 



169 



Table 7. Shozving the resistance 

 different species from 



of shrimps and crabs of the same and 

 different depths, to acidity. 



o 



Scientific Name 



Pandtlus danae Stimp. 



Pandalus stenolepis Rath. 



Pandalus borealis Kroy. 



Crangon alaskensis 







CO ^o 



"i _ ffff 



• o o 



^3 



Crangon communis Ratli 



Spirontocaris lamellicornis Dana 



Scyra acutifrons Dana 



Petrolisthes eriomerus Stimp.. 

 Cancer productus Rand 



Cancer oregonensis Dana. 



60-100 

 4 



80 

 100-150 

 4* 

 20 

 100-150 

 4* 

 20 

 80-160 



50 

 40-60 

 170 

 100 

 100 

 4 

 40-50 

 SO 

 100-150 



40-50 

 110-150 

 4 

 40-50 

 80 

 100-150 

 

 1-2 

 40-100 



3 ft> 



O I ■ 



o p 2 (i> 



►1 3 ^ C 



<n 3 



3 



-! O 



3 ? n" c: 



■a ts g 



en Diii. 



X p 



1 

 1 



5 

 5 

 3 

 2 

 2 

 1 

 3 

 1 

 1 



( 1 

 1 

 1 



I 1 

 I 1 



I 2 

 I 



1 3 

 I 



I 2 

 I 

 I 1 



1 



1 



33 



33 



33 



100 



100 



100 



127 



127 



1 



100 



100 



100 



1 



33 



33 I 



I 

 33 I 



33 I 



33 I 



I 

 33 I 



33 

 33 

 33 

 33 

 33 

 100-120 I 



100-120 I 



I 

 100-120 I 



9 

 10 



8 

 13 



? 



10 



23- 



81 



6 



7 



6 

 13 

 14 

 18 



6 



8 

 12 

 12 

 12 

 12 

 18 



8 



8 

 63 

 73 

 28 



23 

 2? 

 18 

 18 

 18 

 55 



190 



180 

 13 

 13 

 14 

 87 

 87 



100 

 14 

 18 

 62 

 62 

 62 

 62 

 28 

 28 

 8 

 63 

 73 

 28 



117 



I 30 1 



1 



I 35 



247 



Alive 

 Dead 

 Alive 

 Alive 

 Alive 

 Dead 

 Dead 

 Dead 

 Alive 

 Alive 

 Dead 

 Dead 

 Alive 

 Dead 

 Dead 

 Alive 

 Alive 

 Alive 

 Alive 

 Alive 

 Alive 

 Alive 

 Dead 

 Dead 

 Dead 

 Dead 



1 Average to 



I death 



1 dead 



1 alive 



