North Pacific Anadromous Fish Commission

Technical Report 18

Table of Contents

Predation on Pacific Salmon on the High Seas

Laurie A. Weitkamp and Sabrina Garcia

Abstract Excerpt:
Predation on Pacific salmon (Oncorhynchus spp.) at sea remains one of the big “unknowns” for salmon marine ecology (Pearcy 1992; Beamish 2018). The answers to basic questions such as who are the major predators (fish, birds, marine mammals), whether predation is random or selective (e.g., based on size or health), or how it varies in space and time are all poorly understood. Perhaps the biggest challenge to understanding predation is discovering predators “in the act” of preying on salmon by finding salmon remains in predator stomachs.

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Weitkamp, L.A., and S. Garcia.  2022.  Predation on Pacific salmon on the high seas.  N. Pac. Anadr. Fish Comm. Tech. Rep. 18: 42–46.