Table 3

Summary of the simple linear regression analysis on the ‘extended dataset’ using phylogenetic generalized least square (PGLS) model
Models FBS ~ ES + CS SDI ~ ES + CS SDI ~ MTD SDI ~ PC SDI ~ MPC CS ~ PC CS ~ FPC ES ~ MPC

‘Range + Mean’

data

λ = 0.966 λ = 0.805 λ = 0.902 λ = 0.901 λ = 0.964 λ = 0.961 λ = 0.963
R2 = 0.36 df = 453 df = 407 df = 402 df = 371 df = 366 df = 404
df = 2, 249 t = −1.71 t = −3.21 t = −2.86 t = −2.84 t = −2.87 t = 1.74
ES: p < 0.01 p = 0.09 p < 0.01 p < 0.01 p < 0.01 p < 0.01 p = 0.08
Slope = 0.46
t = 8.06
CS: p < 0.01
Slope = 0.15
t = 10.24
‘Mean’ data λ = 0.970 λ = 0.895 λ = 0.899 λ = 0.894
R2 = 0.41 df = 255 df = 295 df = 291
df = 2, 196 R2 = 0.02 t = −2.59 t = −2.84
ES: p < 0.01 ES: p = 0.05 p = 0.01 p < 0.01
Slope = 0.49 Slope=
t = 7.92 −0.15
CS: p < 0.01 t = −1.99
Slope = 0.16
t = 9.96

All species with relevant data are included in each pairwise correlation analysis. Only correlations with degrees of freedom ≥ 3 and p < 0.1 are presented here, and the complete results are available in Additional file 4.

FBS female body size, CS log clutch size, ES log egg size, SDI sexual size dimorphism index, MTD male territory defence, PC parental care, MPC male parental care, and FPC female parental care.

Han and Fu

Han and Fu BMC Evolutionary Biology 2013 13:27   doi:10.1186/1471-2148-13-27

Open Data