Diel Feeding and Gastric Evacuation of Juvenile Pink and Chum Salmon in Icy Strait, Southeastern Alaska, May-September 2001

摘要

We studied seasonal diel feeding and gastric evacuation rates of juvenile pink (Oncorhynchus gorbuscha; n = 458) salmon and chum (O. keta; n = 464) salmon in the marine waters of the northern region of southeastern Alaska, from May through September of 2001. These process studies were conducted as part of the Southeast Coastal Monitoring (SECM) Project of the Auke Bay Laboratory, National Marine Fisheries Service. For each of the past seven years (1997-2003), SECM scientists have monitored the abundance, distribution, stock composition, and energy content of juvenile salmon as the fish transit through the principal migration corridor in the region, and also have monitored habitat biophysical parameters and carrying capacity (Orsi et al. 2002). For this project, we sampled monthly in Icy Strait by beach seining two sites near shore in May and by surface trawling at a station located 6.4 km offshore in June through September (Sturdevant et al. 2002).