Tag Archives: Skeena

Northern Boundary Area Sockeye Salmon Genetic Stock Identification

Provisions of the Pacific Salmon Treaty specify harvest sharing arrangements of Nass and Skeena River sockeye salmon returns for the U.S. and Canada. The United States is allowed to harvest a fixed percentage of the Annual Allowable Harvest of Nass and Skeena sockeye stocks in Alaska’s District 101 gillnet and District 104 purse seine fisheries. Accurate estimates of the stock-specific catch in commercial fisheries of each nation are required to estimate the total return of these stocks and the percentage of each stock caught in treaty-limited fisheries. Annual catches over or under the agreed percentage are made up for in subsequent years.

Until recently, the Alaska Department of Fish and Game (ADF&G) used scale pattern analysis successfully to estimate contributions of Nass, Skeena and Southeast Alaska sockeye stocks to fisheries in southern Southeast Alaska. SinceĀ  2006, the Auke Bay Laboratories has used genetic analysis for the Northern Boundary sockeye fisheries. Results from comparisons between stock composition using scales and genetic analysis show both methods provide accurate estimates of stock composition, although DNA analysis is able to discriminate stocks at a finer resolution than scales. An additional advantage of the DNA technique is that it does not require annual sampling to re-establish the escapement baseline.

The purpose of this project is to continue the genetic stock identification of the commercial sockeye catch in ADF&G District 101 gillnet fishery and District 104 seine fishery using the baselines developed by the ADF&G.

N18-I10 Northern Boundary Area Sockeye Genetic Stock Identification Report 2018

N17-I09 Northern Boundary Area Sockeye Genetic Stock Identification Report 2017

N16-I02 Northern Boundary Area Sockeye Genetic Stock Identification Report 2016

N15-I02 Northern Boundary Area Sockeye Salmon Genetic Stock Identification for 2015. Year 9 of 17

N14-I02 Northern Boundary Area Sockeye Salmon Genetic Stock Identification for 2014. Year 8

N13-I02 Northern Boundary Area Sockeye Salmon Genetic Stock Identification for 2013. Year 7

N12-I07 Northern Boundary Area Sockeye Salmon Stock Identification for 2012. Year 6

N11-I04 Northern Boundary Area Sockeye Genetic Stock Identification. Year 5

N10-I11 Northern Boundary Area Sockeye Salmon Genetic Stock Identification. Year 3

N08-I30 Northern Boundary Area Sockeye Genetic Stock Identification. Year 3

N07-I19 Northern Boundary Area Sockeye Genetic Stock Identification. Year 2.

N06-I12A Northern Boundary Area Sockeye Salmon Genetic Stock Identification

N06-I12B Northern Boundary Area Sockeye Salmon Genetic Stock Identification (ADFG)