TABLE 12. Comparison of calculated growth of Tongue River sauger with those 

 from other northern waters (mm). 



^ Haddix and Estes 1976. 

 Summarized in Priegel 1959. 



POPULATION ESTIMATES 



The number of sauger moving into the lower Tongue River in 1976 was 

 estimated using the Schnabel , Schumacher-Eschmeyer, and Chapman or Modified 

 Schnabel estimators. Formulas and criteria to be considered for the population 

 estimates were discussed on page 16 . The three estimates were similar, with 

 the Chapman estimator showing the best degree of fit (table 13). 



TABLE 13. Estimated populations of sauger moving into the lower Tongue River, 



spring 1976. 



Estimator 



95% CI 



Schumacher-Eschmeyer 



Schnab 



Chapman 



3796 

 3710 

 3680 



3249-4564 

 3136-4542 

 3114-4498 



51 



