The caloric density of stomach contents in juvenile chinook salmon,Oncorhynchus tshawytscha, was not affected by gastric evacuation, suggesting a constant caloric density of stomach contents during evacuation. Differences in the caloric density of prey consumed did affect caloric density of stomach contents over a 24-h period. Consumption of the amphipodCorophium sp. was associated with reduced caloric densities of stomach contents. During periods whenCorophium contributed more than 4% of the stomach contents, average caloric density declined from 5.56 to 5.33 kcal g−1. Despite this difference, estimates of daily energy intake of juvenile chinook salmon were only 3%, greater when developed from the mean caloric density of stomach contents excludingCorophium.
|Publication Subtype||Journal Article|
|Title||Effect of differential gastric evacuation and multispecies prey items on estimates of daily energy intake in juvenile Chinook salmon|
|Series title||Environmental Biology of Fishes|
|Publisher||Kluwer Academic Publishers|
|Contributing office(s)||Western Fisheries Research Center|
|Google Analytic Metrics||Metrics page|