TABLE III.
Wild population, logistic | Captive population, Gompertz | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||
Parameter | Estimate
|
Standard error
|
KLc | Parameter | Estimate
|
Standard error
|
KLc | ||||
M | F | M | F | M | F | M | F | ||||
a0 | −3.37 | −3.46 | 0.68 | 0.66 | 0.51 | a0 | −2.88 | −3.14 | 0.77 | 0.76 | 0.53 |
a1 | 1.09 | 1.07 | 0.72 | 0.71 | 0.5 | a1 | 1.16 | 1.24 | 0.68 | 0.67 | 0.5 |
c | 0.03 | 0.02 | 0.02 | 0.02 | 0.54 | C | 0.03 | 0.01 | 0.02 | 0.01 | 0.74 |
b0 | −3.68 | −3.84 | 0.53 | 0.54 | 0.52 | b0 | −4.15 | −4.56 | 0.67 | 0.64 | 0.59 |
b1 | 0.42 | 0.48 | 0.15 | 0.14 | 0.53 | b1 | 0.12 | 0.2 | 0.06 | 0.06 | 0.81 |
b2 | 1.62 | 1.57 | 0.71 | 0.66 | 0.5 |
Parameter estimates and their standard errors from the best-fitting mortality function for the males (M) and females (F) of each population. The Kullback–Leibler Discrepancy Calibration (KLc) measures differences between the sexes: values closer to 0.5 indicate no difference. Numbers in bold indicate a difference between the means that is unlikely to occur if the distributions of the two variables were the same.