TABLE XI
AVumber of Prey Eaten when Fastened in Petroleum Jelly, Fastened and Allowed to Free Themselres, and under Nornial
Conditions. (Reproduced with permission from Reynoldson and Young, 1963.)
Twenty-five prey and twenty triclads used in each regime.
Polycelis nigra
No. eaten by
P . tenuis
Dugeaia lugubris
Prey
Fixed
Freed
Control
Asellus meridianus
18
I
1
Cloeon dipterum
4
1
0
LymnaecL pereger
-
-
-
Hxdrobja jEnkinsi
-
-
-
_ _ ~
Fixed
Freed
Control
Fixed
Freed
Control
19
9
3
19
11
0
11
5
0
14
2
0
2
8
-
13
7
-
-
-
-
-
-
-