Bering wolffish COSEWIC assessment and status report: chapter 14

Technical Summary

Anarhichas orientalis

Bering Wolffish
Loup de Béring

Only known Canadian population occurs in Bathurst Inlet, Nunavut (Arctic Ocean)


Extent and Area Information

Extent of occurrence (EO)(km2)

Unknown


specify trend (decline, stable, increasing, unknown)

Unknown


are there extreme fluctuations in EO (> 1 order of magnitude)?

Unknown


area of occupancy (AO)(km2)

Unknown


specify trend (decline, stable, increasing, unknown)

Unknown


are there extreme fluctuations in AO (> 1 order magnitude)?

Unknown


number of extant locations

Bathurst Inlet


specify trend in # locations (decline, stable, increasing, unknown)

Unknown


are there extreme fluctuations in # locations (>1 order of magnitude)?

Unknown


habitat trend: specify declining, stable, increasing or unknown trend in area, extent or quality of habitat

Unknown



Population Information

generation time (average age of parents in the population) (indicate years, months, days, etc.)

Unknown


number of mature individuals (capable of reproduction) in the Canadian population (or, specify a range of plausible values)

Unknown


total population trend:  specify declining, stable, increasing or unknown trend in number of mature individuals

Unknown


if decline, % decline over the last/next 10 years or 3 generations, whichever is greater (or specify if for shorter time period)

N/A


are there extreme fluctuations in number of mature individuals (> 1 order of magnitude)?

Unknown


is the total population severely fragmented (most individuals found within small and relatively isolated (geographically or otherwise) populations between which there is little exchange, i.e., ≤ 1 successful migrant / year)?

Very likely


list each population and the number of mature individuals in each

Bathurst Inlet: population size unknown


specify trend in number of populations (decline, stable, increasing, unknown)

Unknown


are there extreme fluctuations in number of populations (>1 order of magnitude)?

Unknown



Threats (actual or imminent threats to populations or habitats)

  • Habitat damage by commercial bottom trawling activities
  • By-catch in commercial fishery in North Pacific
  • Future oil and gas exploration and development activities along inshore areas of the Western Arctic.


Rescue Effect (immigration from an outside source): Low

does species exist elsewhere (in Canada or outside)?

Yes


status of the outside population(s)?

No protection


is immigration known or possible?

Not known


would immigrants be adapted to survive here?

Most likely


is there sufficient habitat for immigrants here?

Unknown



Quantitative Analysis

 

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