Correction to ‘Salmon lice from aquaculture reduce marine survival of Atlantic salmon’

Gargan, P. G., Millane, M., Lennox, R. J., & Vollset, K. W. (2025). Salmon lice from aquaculture reduce marine survival of Atlantic salmon. Journal of Animal Ecology, 94(7), 1346–1360. https://doi.org/10.1111/1365-2656.70051

In the originally published version of this article, the data point for the River Erne was incorrectly reported in the data table (Table 1). Although this data point had been excluded from the original analysis due to the unavailability of accurate estimates of farmed salmon abundance (required to calculate sea lice infestation pressure), it was inadvertently included in the summary table with an infestation pressure value of zero.

We have now updated the table to reflect the correct infestation pressure estimate for River Erne, based on recently obtained data. The River Erne data point has also been included in the updated statistical analysis. This updated analysis shows that inclusion of this data point has no impact on the overall conclusions of the study. Minor changes to the effect size estimates were observed (originally 1.22 [C.I. 1.12–1.33] now corrected to 1.24 [C.I. 1.13–1.35]), now representing a marginal increase from 18 to 19.2% less returns in the control group, but all key findings regarding the relationship between salmon lice infestation pressure and marine survival of Atlantic salmon remain valid and statistically supported.

In the data table (Table 1), mobile lice level prior to release for Burrishoole release date of 28 April 2009 is incorrectly entered as 3.91 (a typo) but is 3.13. This has been corrected in the table.

In addition, the original forest plot (Figure 4) contained an error related to data labelling and effect size. This figure has now been corrected and replaced with an updated version that includes the River Erne data and accurately reflects the revised analysis.

These corrections do not alter the scientific conclusions of the article.

We apologize for the oversight and thank readers for their attention to detail and engagement with our work.

TABLE 1. Numbers of treated and untreated salmon smolts by release location and release year, farm stocking status, mobile lice levels, estimated farm stock numbers and associated one-sea-winter (1SW) returns during the study period 2001–2019.

FIGURE 8. Estimated effect of infestation pressure and treatment from glmer model using the plot_model function in sjPlot package in R. Treated fish are coloured blue while untreated controls are coloured red.