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Table 3 Reproductive success as a function of sperm and wing length in A. gambiae males (GLM models)

From: Intra-specific variation of sperm length in the malaria vector Anopheles gambiae: males with shorter sperm have higher reproductive success

model id model res df res dev AIC
1 p.insem ~ sperm * wing 12 16.59 44.38
2 p.insem ~ sperm + wing 13 16.60 42.40
3 p.insem ~ wing 14 23.84 47.63
4 p.insem ~ sperm 14 17.97 41.77
5 p.insem ~ 1 15 23.88 45.68
effect comparison Δdf Δdev p
sperm*wing 1 vs. 2 1 0.02 0.903
sperm 2 vs. 3 1 7.23 0.007
wing 2 vs. 4 1 1.37 0.242
model id model res df res dev AIC
6 p.motile ~ sperm * wing 12 15.38 45.83
7 p.motile ~ sperm + wing 13 15.96 44.41
8 p.motile ~ wing 14 21.02 47.47
9 p.motile ~ sperm 14 17.34 43.79
10 p.motile ~ 1 15 21.16 45.61
effect comparison Δdf Δdev p
sperm*wing 6 vs. 7 1 0.58 0.447
sperm 7 vs. 8 1 5.06 0.025
wing 7 vs. 9 1 1.38 0.240
model id model res df res dev AIC
11 p.ovip ~ sperm * wing 12 14.42 44.90
12 p.ovip ~ sperm + wing 13 15.56 44.05
13 p.ovip ~ wing 14 21.24 47.72
14 p.ovip ~ sperm 14 17.99 44.47
15 p.ovip ~ 1 15 21.73 46.21
effect comparison Δdf Δdev p
sperm*wing 11 vs. 12 1 1.15 0.284
sperm 12 vs. 13 1 5.68 0.017
wing 12 vs. 14 1 2.43 0.119
  1. Experiment 3: GLM with binomial errors was used to model the proportion of inseminated females (p.insem), the proportion of females with at least one motile sperm in their spermathecae (p.motile), and the proportion of ovipositing females (p.ovip) as a function of the sire family's mean sperm length (sperm), the mean wing length (wing), and their interaction (sperm*wing). Shown for each model are the residual degrees of freedom (res df), the residual deviance (res dev), and the Akaike information criterion (AIC). Shown for the log likelihood ratio tests of the effects are the change in the degrees of freedom (Δdf), the change in the residual deviance (Δdev), and the statistical significance of the effect (p). The best model according to AIC and the statistically significant effect sizes are shown in bold.