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Fig. 8 | Movement Ecology

Fig. 8

From: Fine-scale foraging movements by fish-eating killer whales (Orcinus orca) relate to the vertical distributions and escape responses of salmonid prey (Oncorhynchus spp.)

Fig. 8

Catch depths (m) of six species of Pacific salmon taken by troll, gillnet or trawl fishing (dark grey boxes), and maximum foraging dive depths (1st–3rd quartiles, shaded band) of 30 tagged northern resident killer whales. The range of maximum foraging depths shown here spans the interval between the 25th and 75th percentiles (22.2–93.2 m) of all LDA-detected foraging dives (N = 701), and the fishery catch depths are from salmon vertical distribution and bycatch studies. For each species of salmon, individual boxes represent separate studies (some studies appear more than once if conducted on multiple species). Dashed lines indicate the total depth interval (m) fished, and dark grey boxes represent the depth interval (m) in which the largest percentage of fish was caught during each study. Catch data are from all seasons and times of day, taken in both coastal and high seas habitats (N = 8 studies, minimum of 10 individual fish/species/study)

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