52 



TABLE 1 



OBSERVED RATES OF NATURAL MORTALITY 

 FOR PLANKTONIC LIFE STAGES OF FISH 



*Survival to end of life stage is provided only for those instances where it 

 was used to back calculate mortality rate. 



fFranklin and Smith (1963) and Monten (1948; 1950) dealt with hatchery- 

 reared populations, which would, presumably, have lower mortality rates than 

 naturally spawned fish. 



