POIKILOTHERMIC ADAPTATIONS 



Temperature 



of 

 Measurement 



Acclimation Temperature 



and Oxygen Consumption 



per Wet Weight 



Per Cent by which 

 Cold Exceeds Warm 



lamprey 

 (Scherbakov, 1937) 



1.5-3.5° 15-17° 



16° 0.21 mgOg/g^/hr 0.14 



50% 



eel 



(Preoht, 1951) 



11° 26° 



12° 5 mlOj/lOOgw/hr 2 150% 



22° V mlOj/lOOg^^/hr 7 0% 



Carassius gibello 



crucian carp 10-11 



(Suhrmann, 1955) 20-21^^ 



29 '^ 



4.4 mlOg/lOOgw/br 3-2 



15.5 mlOg/lOOg^^r/hr 6.8 



24.6 mlOg/lOOgw/lir 16.1 



37% 



128% 



53% 



Carassius carassius 



carassius 20' 



(Roberts, 1960) 



4.70 

 70 mlOg/kg/hr 

 72 mlOg/kg/hr 



20° 

 168 (7 hr day) 

 238 (17 hr day) 



58% 

 69% 



g°l'*^^^^ Standard f' 



(Kanungo, Prosser, 25 



19 59 a) „„c 



10° 30° 



8.7 mlOg/lOOgw/hr 6.94 



13.7 mlOj/lOOgw/hr 7.86 



11.29 mlO2/l00g^/hr 9.76 



19.33 mlO2/l00gw/hr 12-2 



25% 

 74% 



16% 

 58% 



Gillichthys 

 (WeUs, 1935) 



10-12° 

 0.11 gms/hr 



30*^ 

 .09 



22% 



frog 



(Riech et al., 1960) 



5° 25° 



10° 8 mlOg/lOOgw/hr 3-0 166% 



20° 11 mlOg/lOOgw/hr 7.5 47% 



frog 

 (Jankowsky, 1960) 



7° 



158 mm3/hr/g2/3 

 411 



25* 

 122 



287 



30% 

 43% 



Table I. Metabolic acclimation of intact poikilothermic vertebrates. 



13 



