The MCC Salmon Subcommittee has released a letter to Fisheries and Oceans Canada with recommendations for monitoring in SC recreational fisheries. In summary, with management measures moving to non-retention of chinook in many areas, there are concerns around the Fisheries Related Incidental Mortality (FRIM) still being high and impacting stocks of concern like Fraser River 42/52 chinook. As the non-retention of chinook increases, total mortalities will decrease (e.g. some fish that would have been kept are now released) however FRIM will increase. Our recent discussion paper illustrates that new guidance for the derivation of FRIM suggests that estimates using current methodology from DFO and PSC managers may underestimate the actual FRIM in these fisheries, and likely by a large margin.
This letter calls for increased monitoring in recreational fisheries specifically in regards to genetic sampling of released fish, as well as kept chinook, so that managers can determine the stock composition of both released and kept chinook. Additionally the MCC is requesting that DFO incorporate the guidance provided by Patterson et al. (2017) in future FRIM and total mortality estimates.
The following figure shows that the median estimate of FRIM in the full non-retention scenario (bottom-left panel – based on 2018 catch and release data) is about 9000 using guidance from Patterson et al. (2017) – nearly 4-fold higher than DFO’s estimate and double that using PSC methods.