Chinook Salmon West Vancouver Island, Ocean, Fall (South) population
Scientific Name: Oncorhynchus tshawytscha
Other/Previous Names: Chinook Salmon (West Vancouver Island Ocean Fall (South) population)
Taxonomy Group: Fishes
COSEWIC Range: British Columbia, Pacific Ocean
COSEWIC Assessment Date and Status Change: November 2020
COSEWIC Status: Threatened
COSEWIC Status Criteria: C2a(ii)
COSEWIC Reason for Designation: Mature fish in this population return in fall to spawn at a large number of sites in rivers along the south west coast of Vancouver Island including the Nahmint, San Juan, Somass-Sproat, Nitinat, and Sarita Rivers. Survey information is available for many spawning locations, and while the overall trends are unclear, <10,000 wild adults are thought to remain. Large-scale hatcheries operating with the aim of augmenting production has resulted in straying of hatchery-origin spawners throughout the range. Such straying likely compromises the genetic composition of spawners and therefore represents a continuing threat to the wildlife species. Other threats include ecosystem modifications (primarily due to slides and sedimentation from forestry) and aquaculture of Atlantic Salmon, all of which are inferred to result in a future decline in numbers of wild fish.
COSEWIC History of Status Designation: Designated Threatened in November 2020.
SARA Status: No schedule, No Status
Date of Listing (yyyy-mm-dd):
Please note that this information is provided for general information purposes only. For the most up to date and accurate list of species listed under the Species at Risk Act, please see the Justice Laws Website.
Provincial and Territorial Protection
PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.
3 record(s) found.
- COSEWIC Status Reports (1 record(s) found.)
- Response Statements (1 record(s) found.)
- COSEWIC Annual Reports (1 record(s) found.)
COSEWIC Status Reports
COSEWIC assessment and status report on the Chinook Salmon Oncorhynchus tshawytscha, Designatable Units in Southern British Columbia (Part Two - Designatable Units with High Levels of Artificial Releases in the Last 12 Years), in Canada (2021-10-12)Southern British Columbia (BC) Chinook Salmon comprise 28 Designatable Units (DUs). The focus of this Part Two report is the 12 DUs that are considered to have had more extensive artificial enhancement, usually through hatchery production. Please refer to Part One report (COSEWIC 2018) for the status of the other 16 DUs and for additional information on this report’s 12 focal DUs. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.
COSEWIC Annual Reports
COSEWIC Annual Report 2020 to 2021 (2021-10-12)Over the past year COSEWIC assessed a total of 66 wildlife species, of which 4 were assigned a status of Not at Risk. Of these 66, COSEWIC re-examined the status of 41 wildlife species; of these, 80% were reassessed at the same or lower level of risk. To date and with the submission of this report, COSEWIC’s assessments now include 826 wildlife species in various risk categories including 369 Endangered, 196 Threatened, 239 Special Concern, and 22 Extirpated (i.e. no longer found in the wild in Canada). In addition, 19 wildlife species have been assessed as Extinct, 62 wildlife species have been designated as Data Deficient, and 202 have been assessed as Not at Risk.