358 Ittinois NATURAL History Survey BULLETIN Vol. 26, Art. 4 
Table 26.—Composition of catches of trammel net sets and trammel net floats made in the 
Mississippi River by the fisheries survey party between Grafton, Illinois, and Dubuque, Iowa, 
1944 and 1946. Included are catches of the experimental sets made at Grafton and of the experi- 
mental floats made at Quincy in the fall of 1944 and all other sets and floats except a few that 
were omitted because of discrepancies in methods of fishing. 
TramMeL Net Sets (116) TramMeL Net F oats (108) 
Kino oF Fisx Number/|Per Cent} y,, - Per Cent|Number|Per Cent} y,, - Per Cent 
of of Total H sais of Total of of Total Wee of Total 
Fish |Number| *°°"°S | Weight | Fish [Number| ~ °4"°S | Weight 
CoMMERCIAL 
Shovelnose sturgeon..... 0) 0.0 0.00; 0.0 383 67.9) 473pS00 esos 
CaP ses es pares 584 | 44.3 (1,986.54) 64.1 28 4.9 | 20a 
Bigmouth buffalo. ...... 135") -.10°3 376.63} 12.1 0 0.0 0.00 0.0 
Black buffalo........... 10 0.8 23.76; 0.8 0 0.0 0.00 0.0 
Smallmouth buffalo. .... 32 2.4 45.42} 1.5 2 0.4 3.94 0.5 
Pullheads. 5522. cs 14 14 11.68) 0.4 0 0.0 0.00 0.0 
Channel catfish......... 3 0.2 Byori: Os 2. 0.4 10.42 1.2 
Flathead catfish........ 3 0.1 4.45) 0.1 7 12 11.32 1.3 
Suckers and redhorses. . . 4 0.3 7.56, 0.2 vi 2 15.35 1.8 
Carpentkertie cca soa 67 2 Fe 84.89} 2.7 14 205 16.80 2.0 
Freshwater drum....... 50 Ses 63074 Dial 96 17.0 | 109.83) \seees 
WHEIOIGI Ree aS 901 | 68.4 |2,613.04| 84.3 539 95.5. | 77645 Ors 
Sport 
Largemouth bass....... 1 0.1 OSTA ee 0 0.0 0.00 0.0 
Spotted basso. te. : 0 6 0.5 6.50} 0.2 0 0.0 0.00 0.0 
Black.crappie (6:72 -4 =. 117 8.9 Gl 35) oe 2e0 0 0.0 0:00 0.0 
White crappie.......... 76 5.8 43.04, 1.4 0 0.0 0.00 0.0 
srt er) | Rp are a Relea 20 Ls 8.35} 0.3 0 0.0 0.00 0.0 
Warewuth. cp. e 2 0.1 0 98) tee 0 0.0 0.00 0.0 
Soper he eas wh is 1 0.1 Me 4 oan! Op 5 0.9 8.54 1.0 
Northern pike.......... 1 0.1 3.49} 0.1 0 0.0 0.00 0.0 
Wins bas6 ny es oo ws 2 0.1 3.45} 0.1 0 0.0 0.00 0.0 
Yellow: bass: 2 .7..250 6% 2 0.1 O87. at ) 0.0 0.00 0.0 
Smmotal: oon ee ss econ SPE Aca 130.42| 4.2 5 0.9 8.54 1.0 
PREDATORY 
Longnose gars). 7.2.).22:: 5 0.4 12.85) 0.4 14 2:5 57.49 6.8 
Shortnose gar.......... 94 Tee 140.98) 4.6 5 0.9 8.66 1.0 
BIR eee cee 51 3.9 L7L ALO Ses 0 0.0 0.00 0.0 
DpaAl sss, Ser SS 150 | 11.4 325.24) 10.5 19 3.4 66.15 7.8 
ForaGE 
Sizzard shades Ke pete se. 35 Ded 30.33} 0.9 0) 0.0 0.00 0.0 
Gneteris caekoen s a 0.2 2:00) 01 1 0.2 0.83 0.1 
WDM Sais, £0 tees 38 2.9 32.331" 40 1 0.2 0.83 0.1 
DORMS setts cree 1,317 | 100.0 |3,101.03| 100.0 564 | 100.0 | 851.97 | 100.0 
*tr. (trace) indicates that the species was taken but that the take averaged less than 0.1 per cent of total weight. 
Table 27—Summary of catches of three important commercial fishes in 73 trammel net 
sets made in the fisheries survey of the upper Mississippi River, 1946. 
NuMBER OF : RANGE 
NuMBER ee FIsH OF Per Cent en be OF 
Kinp or Fisu | or Fisn, Pee te CommerciAL | ComMMERCIAL L eaee ToTaL 
ALL Sizes Sydes SIzEs SIzEs a: > | LENGTHS, 
PER SET NCHES INCHES 
patie Sete 537 491 6.73 91.4 16.5 10.6-31.6 
Bigmouth 
bubalon i.) 116 107 1.47 92.2 17.1 10.2-20.8 
Freshwater 
relat ta Seep anes 49 46 0.63 93.9 1325 7.7-17.4 
EE ——— 
