Science Response 2018/004

Update of stock status indicators for Greenland Halibut in the Gulf of St. Lawrence (4RST) in 2017

Context

The Gulf of St. Lawrence (4RST) Greenland Halibut (Reinhardtius hippoglossoides) stock assessment is conducted every two years and the last assessment took place in February 2017. In the interim years, an update of the main resource indicators is presented to determine if major changes in the status of this stock warrant a complete re-evaluation of the stock and a revision of the advice before the evaluation cycle planned for the winter of 2019.

During the February 2017 assessment, the monitoring indicators and the element that could trigger a stock assessment during an interim year were identified. These monitoring indicators are commercial fishery landings and Fisheries and Oceans Canada (DFO) survey abundance indices. The element that could trigger a stock assessment in an interim year is a more than 30% decrease in the biomass index for fish greater than 40 cm in size, determined by DFO survey data.

This update has been prepared to provide Fisheries Management with an overview of the most recent stock status based on the selected monitoring indicators.

Complete document (PDF, 1,294 KB)

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