Parental care, loss of paternity and circulating levels of testosterone and corticosterone in a socially monogamous song bird

Table 2 Male nestling provisioning in relation to GnRH-induced testosterone, breeding and environmental parameters

	Relative male provisioning rate	Absolute male provisioning rate
	Estimate [Credible intervals (2.5% – 97.5%)]	Estimate [Credible intervals (2.5% – 97.5%)]
Intercept (Stage feeding)	−0.51 [−1.96 – 0.93]	9.17 [2.31 – 15.71]
Stage	−0.07 [−4.99 – 4.98]	0.89 [−2.63 – 4.37]
GnRH-induced testosterone	0.11 [−0.06 – 0.28]	0.0003 [−0.001 – 0.002]
Brood	0.19 [−0.19 – 0.57]	0.08 [−2.16 – 2.4]
Rain	−0.002 [−0.009 – 0.004]	−0.01 [−0.06 – 0.04]
Temperature	−0.06 [−0.1 – −0.02]	−0.21 [−0.49 – 0.09]
Clouds cover	0.003 [−0.003 – 0.008]	0.002 [−0.04 – 0.04]
Songs	−0.06 [−0.08 – −0.03]	−0.14 [−0.23 – −0.05]
Testosterone: stage	0.00004 [−0.59 – 0.58]	−0.0003 [−0.002 – 0.001]

The left column shows the relative male provisioning rate (proportion) and the right column the absolute male provisioning rate, each with the corresponding Bayesian estimate and its’ credible intervals. Estimates of cofactors refer to differences from the intercept estimate, which represents the feeding stage. If 0 (zero) is not included in the credible intervals there is an effect of this parameter on the dependent variable. ‘Significant’ effects with credible intervals not including zero are shown in bold.

ISSN: 1742-9994