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Table 1 Quantitative genetics of growth tank-based traits (n = 114 tanks)

From: Genetic conflict between sexual signalling and juvenile survival in the three-spined stickleback

Growth tank traits    Variances   
No. individuals Mean ± SD V A ± SE V P ± SE h 2 ± SE P
Female fecundity 300 6.136 ± 2.609 1.658 ± 0.825 6.609 ± 0.986 0.251 ± 0.105 0.002
Male signal 209 8.257 ± 2.871 2.799 ± 1.089 7.501 ± 1.207 0.373 ± 0.103 < 0.001
Juvenile survival to maturation 989 0.736 ± 0.205 0.012 ± 0.005 0.042 ± 0.006 0.283 ± 0.104 < 0.001
Covariances Cov A ± SE   r G ± SE   P  
 Female fecundity–juvenile survival 0.119 ± 0.052   0.937 ± 0.188   0.003  
 Male signal–juvenile survival −0.120 ± 0.057   −0.717 ± 0.237   0.015  
 Female fecundity–male signal −0.475 ± 0.673   −0.226 ± 0.321   0.474  
  1. Additive genetic and phenotypic variances (V A and V P) and heritability (h 2) of female fecundity (number of spawning events), male sexual signal (seasonal maximum of relative red area) and juvenile survival (proportion of individuals that survived to sexual maturation) were calculated by univariate animal model analyses. Additive genetic covariances and correations (Cov A and r G) among the three traits were calculated by a multivariate animal model. The significance of each additive genetic variance or covariance is presented