White crappie:- -Growth -rate calculations 

 were made from 165 scale samples from the 

 white crappie from area A, and area B, 1948 

 and 1949 . Five age groups were represented 

 but only one fish of age group V was present. 

 The generally poor growth in 1945, previously 

 referred to, is most clearly demonstrated in 

 these calculations , although it is also evident 

 in those for the bluegill and black crappie. The 

 average calculated total lengths at the end of 

 each of the first five growing seasons were 

 2.6, 6.0, 9.1, 10.9, and 11.7 inches (Table 27). 



The growth of the largemouth bass in these 

 areas was considerably more rapid than the 

 Wisconsin average (Bennett, 5), the Minnesota 

 average, and that in three Iowa lakes (Lewis, 

 27; Ruhr, 45). It was also faster than the 

 rate shown by this species in southern Wisconsin 

 waters (Bennett, 5) and in Spwrtsmens Lake, 

 Illinois (Thompson and Bennett, 60). Bennett 

 (6) reported a faster growth rate in Onized 

 Lake, Illinois. The average total lengths at 

 capture exceeded those of the corresponding 

 age groups in the Michigan average (Beckman, 4). 



The growth of the white crappie in areas 

 A and B was generally faster than that shown 

 for other waters in table 28 . Average total 

 lengths at capture of age groups IV and V 

 approximated those of Lake Decatur, Illinois, 

 which Hansen (20) considered to repre'T nt 

 average or slightly better than average growth 

 for the State . 



Largemouth bass:- -Growth rate was 

 determined from the scales of 32 fish collected 

 during the 1949 poisoning of area B. Only three 

 age groups were represented in the entire 

 population. Grand average calculated total 

 lengths at the time of annulus formation for 

 age groups I, II, and III were 4.0, 9.6, and 

 12.8 inches, respectively (Table 29). 



i«bl« 29: — Orand oversga calculated total lengths In Inches at tine of 



amuluB formation of several species, sexes coobined. from the 

 ccRblEcd area A. l?u.^, and area B. 191*8 and 19ij9, collections 

 (munber of spsclJions shotfn In parentheses'. 



Total 

 Spedas number 

 of 

 8p«clJRens 



Largenoutb 

 baas 



Sugar 



Carp 



freab water 



Anm 





li.O(32) 9.6(13) 12.9(3) 



l4.9(W) 9.0(25) U.9(e) 13.«1) 



7.7(51i) Ui.6(U) 19.1(35) 22.1(13) 25.9(U 



5.0(37) 9.6(31) 12.5(13) li.S(u) 16.5(7) 17.5(3) 19.3(1) 



5.7(U) 10.7(2) 13.W1) 



Sauger:- -Calculation of growth rate was 

 made from 42 scale samples collected in area 

 B in 1948 and 1949 . Total lengths at the end of 

 each of the first four growing seasons were 

 4.9, 9.0, 11.9, and 13.6 Inches, respectively 

 (Table 29). 



The growth of saugers in area B was much 

 faster than that in Lake of the Woods, Minnesota 

 (Carlander, 9) and was also well above the 

 Minnesota average. It closely approximated 

 that in Lake Erie (Van Oosten, 67). 



Carp:--Growth calculations were made 

 from the scales of 54 carp taken in area B in 

 1948 . Difficulty was encountered in the inter- 

 pretation of the various apparent annul! on the 

 scales from fish over 2 years of age and 12 scale 

 samples of the original 66 in the collection were 

 discarded. A similar problem was reported by 

 English (12) and the Upper Mississippi River 

 Conservation Committee (62) . Average calcu- 

 lated total lengths at the end of each of the first 

 five growing seasons were 7 .7, 14.8, 19.1, 

 22.1, and 25.8 inches, respectively (Table 29). 



The growth rate of carp approximated 

 that of the Minnesota average. English (1/7) 

 reported a faster growth of carp in Clear Lake, 

 Iowa . 



Spotted sucker: --Growth was calculated 

 from a collection of 85 scale samples taken in 

 area B in 1948 and 1949 . Six age groups were 

 present but age group VI was represented by 

 only one fish in each of the 2 years . The average 

 calculated total lengths at the end of each of the 

 first six growing seasons were 2.4, 8.0, 11.2, 

 13.8, 15.6, and 16.3 inches respectively (Table 30). 



38 



