Characteristics of Spawning Adult Steelhead in Crooked and Nikolai Creeks, Kenai Peninsula, Alaska, 2004-2009

摘要

Adult steelhead Oncorhynchus mykiss were enumerated and sampled for age, sex, length, and genetic information in Crooked and Nikolai creeks during spring spawning migrations between 2004 and 2009. Fish weirs equipped with underwater video systems and fish traps were used to collect the information. Studies were initiated during 2004 in Crooked Creek and later included Nikolai Creek from 2005 to 2009. Escapement information was collected during all years and estimates of total escapement and run timing were obtained by analyzing information collected during years when at least half of the expected run duration was observed at both creeks (2006-2009).