Does phenology influence predation rate on Salmo trutta parr during lake migration?
Richard J. Kennedy,
James Barry,
Adele Boyd
et al.
Abstract:Acoustic tags fitted with predation sensors, which trigger following ingestion by piscivorous predators, were used to compare direct predation rates during downstream migration (out‐migration) of potamodromous (freshwater) brown trout (Salmo trutta L.) parr from their natal river into a large freshwater lake system during spring and autumn. Thirty‐eight spring migrants were tagged across two study years (2021 and 2022) of which 13 individuals (34%) were predated. By contrast 40 autumn migrants were tagged (202… Show more
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