Assessment of the sablefish stock in Alaska
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
Clear All

Assessment of the sablefish stock in Alaska

Filetype[PDF-11.37 MB]

This document cannot be previewed automatically as it exceeds 5 MB
Please click the thumbnail image to view the document.
Assessment of the sablefish stock in Alaska
  • Alternative Title:
    GOA Chapter 3
  • Description:
    The longline survey abundance index increased 14% from 2016 to 2017 following a 28% increase in 2016 from 2015. The lowest point of the time series was 2015. The fishery abundance index decreased 23% from 2015 to 2016 and is the time series low (the 2017 data are not available yet). There was a new Gulf of Alaska (GOA) trawl survey in 2017 which increased 89% from 2015 to 2017. Spawning biomass is projected to increase rapidly from 2018 to 2022, and then stabilize. Sablefish are managed under Tier 3 of NPFMC harvest rules. Reference points are calculated using recruitments from 1977-2013. The updated point estimates of B40%, F40%, and F35% from this assessment are 98,332 t (combined across the EBS, AI, and GOA), 0.096, and 0.114, respectively. Projected female spawning biomass (combined areas) for 2018 is 88,928 t (90% of B40%, or B36%), placing sablefish in subtier “b” of Tier 3. The maximum permissible value of FABC under Tier 3b is 0.086, which translates into a 2018 ABC (combined areas) of 25,583 t. The OFL fishing mortality rate is 0.102 which translates into a 2018 OFL (combined areas) of 30,211 t. Model projections indicate that this stock is not subject to overfishing, overfished, nor approaching an overfished condition.
  • Document Type:
  • Place as Subject:
  • Rights Information:
    Public Domain
  • Main Document Checksum:
  • File Type:
  • Supporting Files:
    No Additional Files

You May Also Like:

Version 3.15