Erratum: Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity (Proc. R. Soc. B (2020) 287 (20201671) DOI: 10.1098/rspb.2020.1671)

(1) Under the section in the main text Methods: (d) Effect of intrusions of captive- bred fish on population productivity, the fourth line of this paragraph should read 'This figure ranged from 0.01 to 0.61.' (2) In the main text, Figure 1b should appear as such: (3) In the main text under the section Methods: (d) Effect of intrusions of captive- bred fish on population productivity, the first part of the sentence starting on the second line of the second column should be corrected as 'While this density measure was only poorly correlated with the annual proportion of captive-bred fish (Pearson's correlation: r = 0.057, t=0.37, d.f. = 41, p=0.72)' (4) In the main text under the section Results, the first sentence of the second paragraph should read 'The population-level analysis revealed a significant negative relationship between our density-independent population productivity measure and the proportion of captive-bred fish in a spawning cohort (adjusted R2 = 0.09, F1,41 = 5.15, p-value = 0.0285).' (5) In the main text under the section Results, the second sentence of the second paragraph should read 'Population productivity at the mean value of the proportion captivebred fish across the 43-year period (0.15) was reduced, on average, by 9.52% (back-transformed from the log scale), relative to a hypothetical pure population (proportion captive-bred fish = 0)'.