Freshwater and marine migration and survival of endangered Cultus Lake sockeye salmon (Oncorhynchus nerka) smolts using POST, a large-scale acoustic telemetry array

Autor:	Erin R. RechiskyE.R. Rechisky, Michael C. Melnychuk, R. Scott McKinley, Aswea D. Porter, David Welch, George D. Jackson, Adrian LadouceurA. Ladouceur, Melinda C. Jacobs
Rok vydání:	2009
Předmět:	biology Ecology Endangered species Aquatic animal Aquatic Science biology.organism_classification Pacific ocean Range finding Fishery Fresh water Telemetry Oncorhynchus Environmental science Ecology Evolution Behavior and Systematics Smoltification
Zdroj:	Canadian Journal of Fisheries and Aquatic Sciences. 66:736-750
ISSN:	1205-7533 0706-652X
DOI:	10.1139/f09-032
Popis:	Freshwater and early marine migration and survival of endangered Cultus Lake sockeye ( Oncorhynchus nerka ) salmon were studied using the Pacific Ocean Shelf Tracking (POST) array. Smolts were acoustically tagged in 2004–2007, and their migration was recorded within the lower Fraser River and coastal southern British Columbia waters. Most smolts showed rapid directional movement (swimming speeds of ~15–30 km·day–1). Average exit time from the Fraser River was 4.0–5.6 days after release, and average residence time within the Strait of Georgia was 25.6–34.1 days. Most individuals migrated northward, generally close to the mainland coast. Survival rates, assessed using standard mark–recapture methods, were generally high during the downstream migration (50%–70%), except in 2005 when survival was
Databáze:	OpenAIRE
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