Diel feeding chronology, gastric evacuation and estimated daily ration of juvenile coho salmon, Oncorhynchus kisutch (Walbaum), in the coastal marine environment
作者： R. D. Brodeur , W. G. Pearcy
DOI: 10.1111/J.1095-8649.1987.TB05252.X
关键词:
摘要: The feeding periodicity of juvenile coho salmon. Oricorhjticliur kisirtcli. was examined from stomach collections taken during five sampling periods in coastal waters off Oregon. Significant dilrercnces content weight werc found between several consecutive 3-hour periods. with peak fullness occurring carly morning and around dusk. rates gastric evacuation euphausiid mcals were measured the laboratory at two temperatures. decline contcnts best described by an exponential model: 90% wet contents rcquircd estimatcd 38.4 18.1 h 11.4 13.7" C, respectively. method Elliott & Persson WBS used to rstimatc a daily ration 3.4 3.7% body tciiiperiilures.
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