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