Changes in the nuclear-plasmic ratio of vertebrate poikilotherms during hunger

Publisher Website
Google Scholar
Abstract
In frogs (Rana esculenta) the nucleo-cytoplasmic ratio was practically constant; in axolotls (Amblystoma) it rose 15% after 5 mos. without food, and fell to 15% below normal after 11 mos. of starvation. The nucleo-cytoplasmic ratio of trout (Salmo officinalis) rose 30% after 80 days of hunger for fry; 49% for 2-yr.-olds. Yearling trout showed an increase of about 50% after 90 days of hunger. This rise in the nuclear-cytoplasmic ratio was transient, since values obtained in the final stages of hunger were sub-normal. A short period of normal feeding did not restore the nuclear-cytoplasmic ratio to its normal value; it was restored, however, by long periods of feeding. The results obtained for trout were considered, in view of the elimination of the effect of tissue dilution accompanying hunger, satisfactory proof of the existence of reserve protein.

This publication has 1 reference indexed in Scilit: