May, 1945 



Bennett: Overfishing, Onized Lake 



391 



Table 15. — Average calculated total lengths in inches of 234 black crappies collected with 

 hoopnets from Onized Lake, July, 1940. 



Brood 



Number 



OF 



Fish 



Average Calculated Lengths by 

 Years of Life 



1 



Average Total 



Length at Time 



OF Capture 



1938... 

 1939... 

 Total. . . 

 .Average . 



226 

 334 



2.24 

 4.02 



3.96 



8.03 



8.03 



10.55 

 6.87 



Table 16. — Average calculated total lengths In inches of 21 black crappies collected from 

 Onized Lake in the census of June 24-28, 1941. 



Brood 



Number 



OF 



Fish 



Average Calculated Lengths by 

 Years of Life 



1 



Average Total 



Length at Time 



OF Collection 



1939... 

 1940... 



Total. . . 

 Average . 



6 

 15 



3.48 

 2.66 



2.89 



7.82 



7.82 



8.62 

 5.29 



14 



12 



(f) 



r 



Z 10 



I- 

 o 



Z 6 



l(J 



< 



1- 



O 2 



I- 



YEARS 



OF 



F E 



Fig. 5. — Average rate of growth of black crappies in Onized Lake as shown by 1940 collec- 

 jtion, in Norris Reservoir and in Reelfoot Lake. 



