100
C.E. Goulden et al.
TABLE 5.3. Effect of dietary supplements on Daphnia catawba clutch size (log
transfonned), Lake Lacawac, June 30, 1989."
Clutch size
Treatment
n
X
Control
15
0.88
EFA
15
0.73
Non-EFA
15
0.99
+Protein
15
2.06
+Algae
14
2.19
Source of variance
df
SS
Treatment
4
4.570
Error
69
6.748
EFA versus control
0.045
Non-EFA versus control
0.007
Protein versus Control
1.444
Algae versus control
2.058
SO
0.46
0.40
0.76
l.l8
0.80
p
<.001
NS
NS
<.001
<.001
"+Algae, A. falcatus; EFA, essential fatty acids; NS, not significant. One-way ANOYA followed by
linear contrasts with the control. Mean length of lake animals during experiment is 1.3 mm (SO, 0.06
mm); mean clutch size is 2.58 eggs per female (SO, 1.57 eggs per female).
TABLE 5.4. Results of dietary supplement experiments in Lake Lacawac (July 13, 1989)
with Daphnia catawba. a
Clutch size
Species
n
X
SO
Control
15
1.10
0.60
+EFA
15
1.20
0.92
+Protein
14
1.18
0.95
+EFA +Protein
15
0.69
0.48
+Algae
15
1.93
0.86
Source of variance
df
SS
P
EFA
0.075
NS
Protein
0.045
NS
EFA * Protein
0.023
NS
Error
55
40.704
+Algae h
I
0.812
.015
Error
28
3.402
"+Algae, A. fa/catus; EFA, essential fatty acids; NS, not significant. Oata analyzed by two-way
ANOYA with main effects. Lake adults at time of experiment had a mean length of 1.45 mm (SO, 0.1
mm) and a mean clutch size of 1.1 eggs per female (SO, 0.28 eggs per female).
hOne-way ANOYA comparing control and +Algae treatment.