TasLe 2. —- Quantitative data on Percina from three years of collections with rotenone. Numbers are the total numbers 
fish per acre of water. A zero indicates that the species was not collected in the sample. A dash indicates that no collection 
made. 
P. maculata P. phoxocephala P. caprodes P.. shumar 
Area, ——_—_—_—— ——_——_——_—— —_—__—_—_——_ ae 
Station Number and Location Acres? 64 °65 °66 64 °65 ’66 °64 °65 766 "64 °65 ’ 
1 Headwaters 0.16 - - 19 - - QO - = —- 
2 Arcola 0.20 274 363 35 i ia @ IG Wo © 0 O 
3 Sullivan-Bruce OR27 Ds G7) WAY 0 143 159 38) i AS 0 O 
4 Eagle Creek 0.34 Boy WA US 218 29 200 Se SO NS) 0-6 
5 Moore’s Bridge 0.38 52 43 11 158 31 100 @ I § 0 O 
6 Above Vandalia 0.53 3 Ik BS 142 24 15 2 @ © 0 aa 
7 Below Vandalia 0.30 0 19 40 12976233 Gy KS! 0 © 
8 Above Carlyle 1.46 =e 2 - 0 O = 8 wo — ae 
9 Below Carlyle 0.66 @Q it i D3 0) BES Oo © @ 0 O 
10 Below New Athens 128 OY = @ 1,7 ml 4 - 1 51 
11 Above Evansville 0.69 Oo - O 2 - 4 7 ee 518 - 
12 Below Evansville 0.86 i} = @ 0 - O oO = il 0 = 
a Area is given for 1966 collections. 
P shumardi 
250 
£ maculata | \ 
Ww j | 
© 
S 200 | 
a 
us | 
oe 
xr | | 
= | 
5 / P phoxocephala | 
| cx Ne 
Fig. 4.— Average number LJ i, R | | 
of fish per acre, collected with a A) \ / 
rotenone from each station, = 100 \ \ | 
during 3 years (1964-1966). D / / 
Zz \ / \ 
50 x \ 
[ / ~ \ | 
i Pde | 
ZAP coprodes 24 ___ ’ ul ~<e 
1 2 3 4 § 6 7 8 9Y 10 Tie 
STATIONS (HEADWATERS TO MOUTH) 
