Science Advisory Report 2010/021
Recovery Potential Assessment for Roundnose Grenadier, Coryphaenoides rupestris
Summary
- Roundnose Grenadier (Coryphaenoides rupestris) was designated as Endangered by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) in 2008.
- Roundnose Grenadier are long-lived, slow-growing and late to mature, and therefore have long population turnover rates. Estimated generation time is 17 years.
- Roundnose Grenadier is under moratorium within the Canadian Exclusive Economic Zone (EEZ) of the North Atlantic Fisheries Organization (NAFO) Subareas 0, 2 and 3. However, C. rupestris is still captured as by-catch in other commercial fisheries inside and outside Canadian waters. Outside Canadian waters, the Roundnose Grenadier catches are unregulated with the exception of mesh size in other fisheries.
- Available abundance indicators from RV surveys are limited and sample only a portion of the preferred depth range/distribution of this species.
- Although it has been recorded that the population declined since the beginning of the commercial fishery in 1967, recent RV survey data indicate that population levels appear to be relatively stable since the early 2000s.
- Population models indicate that current bycatch levels appear to be sustainable; however reduction in bycatch could enhance recovery of C. rupestris.
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