p. 279 - 288 

BIOCHEMICAL AND CELLULAR RESPONSES OF MYTILUS GALLOPROVINCIALIS 
LMK. TO TEMPERATURE STRESS


Maria Mirza 1) and C. Craciun 2)
1) Institute Roumain de Recherches Marines Constanta
2) Cluj-Napoca University, Dept. of Experimental Biology

Abstract
Mytilus galloprovincialis at temperature shocks from 4 degree C to
30 degree C and 9 degree C to 30 degree C, survives 50 and 140 hours
respectively. In the first hours of the exposure the males die faster
than the females and the resistance of the young is greater than that
of the old. When the temperature gap is longer the survival period is
shorter. The shock between 21.5 degree C to 30 degree C after 30 
hours induces a significant increase of the hepatopancreas catalase 
activity, and a diminution of this activity in the adductor muscle. 
After 60 hours the activity diminish but Lowry's protein from tested 
organs and the hemolymph lactic acid increase. The intensity of the 
transformations varies in accordance with the tissue and sex. The 
electron-microscopic study shows the increased distructive effects of
temperature stress on mantle tissue cells.