Impact of Red Fox Predation on the Sex Ratio of Prairie Mallards
Table 21: Average Sex Ratios and Survival Rates Resulting From Various
Settings of the Predictive Model
Table 21. Average sex ratios and survival rates resulting from
various settings of the predictive model for Case I and Case II.
|
|
Sex ratio |
Survival rate |
|
|
Average |
Response |
Male |
Female |
|
|
I |
II |
I |
II |
I |
II |
I |
II |
|
Standard |
119.2 |
117.0 |
- |
- |
.679 |
.679 |
.610 |
.618 |
|
F reduced |
104.4 |
99.2 |
23.1 |
28.1 |
.687 |
.687 |
.671 |
.688 |
|
F increased |
131.2 |
131.6 |
26.3 |
32.9 |
.673 |
.673 |
.564 |
.562 |
|
PM reduced |
128.1 |
127.8 |
-14.8 |
-18.6 |
.674 |
.674 |
.577 |
.578 |
|
PM increased |
108.8 |
104.2 |
-8.7 |
-10.9 |
.684 |
.684 |
.651 |
.667 |
|
r5 = 0%, r6 = 0% |
158.0 |
155.4 |
-32.5a |
-32.9a |
.806 |
.806 |
.663 |
.668 |
|
r5 = 8%, r6 = 5% |
135.4 |
132.8 |
-26.7a |
-26.8a |
.743 |
.743 |
.638 |
.644 |
|
r5 = 20%, r6 = 10% |
107.9 |
105.6 |
-14.5a |
-14.8a |
.648 |
.648 |
.616 |
.624 |
a Response as measured relative to change in the difference between
male and female hunting rates.
Previous Section-- Table 20: Parameters of Distributions
Used to Generate Random Variates
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