ISSN:
1573-5133
Keywords:
Caloric density
;
Columbia River
;
Corophium sp
;
Digestion
;
Food consumption
;
Oncorhynchus
;
Salmonidae
;
Stomach contents
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Synopsis 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00001883
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