Table 4 |
||||
|
Reproductive success as a function of sperm and wing length in A. gambiae males (Parameter estimates) |
||||
|
|
||||
|
model 2: p.insem ~B0 + B1(z.sperm) + B2(z.wing) |
||||
|
param |
estimate |
s.e. |
Mean fitness (p.insem) |
% Δ |
|
B0 |
0.95 |
0.297 |
exp(B0)/(1+exp(B0)) = 0.72 |
|
|
B1 |
-0.84 |
0.330 |
exp(B0 + B1)/(1+exp(B0 + B1)) = 0.53 |
-27.0 |
|
B2 |
0.38 |
0.328 |
exp(B0 + B2)/(1+exp(B0 + B2)) = 0.79 |
9.6 |
|
|
||||
|
model 7: p.motile ~B0 + B1(z.sperm) + B2(z.wing) |
||||
|
param |
estimate |
s.e. |
Mean fitness (p.motile) |
% Δ |
|
B0 |
-0.41 |
0.265 |
exp(B0)/(1+exp(B0)) = 0.40 |
|
|
B1 |
-0.69 |
0.325 |
exp(B0 + B1)/(1+exp(B0 + B1)) = 0.25 |
-37.3 |
|
B2 |
0.39 |
0.337 |
exp(B0 + B2)/(1+exp(B0 + B2)) = 0.49 |
24.0 |
|
|
||||
|
model 12: p.ovip ~B0 + B1(z.sperm) + B2(z.wing) |
||||
|
param |
estimate |
s.e. |
Mean fitness (p.ovip) |
% Δ |
|
B0 |
-0.34 |
0.265 |
exp(B0)/(1+exp(B0)) = 0.42 |
|
|
B1 |
-0.73 |
0.329 |
exp(B0 + B1)/(1+exp(B0 + B1)) = 0.25 |
-38.8 |
|
B2 |
0.52 |
0.343 |
exp(B0 + B2)/(1+exp(B0 + B2)) = 0.54 |
30.9 |
|
|
||||
|
The parameters (B0, B1, and B2) and their estimates and standard errors (s.e.) from GLM models 2, 7 and 12 in Table 3 after standardizing the sire family's mean sperm length (z.sperm) and mean wing length (z.wing) to z-scores. The logit-link function was used to back-calculate the mean fitness (p.insem, p.motile, p.ovip) when the average sire family (z.sperm = 0, z.wing = 0) increased its mean sperm length by one standard deviation while mean wing length was held constant (z.sperm = 1, z.wing = 0), and vice versa (z.sperm = 0, z.wing = 1). The percent change in fitness (% Δ) was calculated relative to the mean fitness of the average sire family. |
||||
|
Voordouw et al. Malaria Journal 2008 7:214 doi:10.1186/1475-2875-7-214 |
||||
