Infected juvenile salmon can experience increased predation during freshwater migration.

Predation risk for animal migrants can be impacted by physical condition. Although size- or condition-based selection is often observed, observing infection-based predation is rare due to the difficulties in assessing infectious agents in predated samples. We examined predation of outmigrating sockeye salmon () smolts by bull trout () in south-central British Columbia, Canada.

Erratum to: Simulated maternal stress reduces offspring aerobic swimming performance in Pacific salmon.

[This corrects the article DOI: 10.1093/conphys/coz095.].

Simulated maternal stress reduces offspring aerobic swimming performance in Pacific salmon.

Pacific salmon routinely encounter stressors during their upriver spawning migration, which have the potential to influence offspring through hormonally-mediated maternal effects. To disentangle genetic vs. hormonal effects on offspring swimming performance, we collected gametes from three species of Pacific salmon (Chinook, pink and sockeye) at the end of migration and exposed a subset of eggs from each female to cortisol baths to simulate high levels of maternal stress.