I would agree. Is there a link to data regarding the current volume of hatchery fish that are clipped prior to release and any insight into the intention to increase this number going forward?
While the MSF proposals didn't rely upon increasing the mark rates for current hatchery production, transitioning to 100% clipped or Mass Marking (MM) is a wise approach for a number of reasons, but IMO unlikely for quite some time because Canada will opt for the less expensive status quo option for as long as possible.
Top 3 reasons in my simple mind for spending the capital now to transition to Mass Marking are:
First reason - Marking all hatchery produced salmon helps us better manage fisheries to lessen the genetic influence of hatchery produced salmon over wild salmon - this is called proportionate natural influence or PNI ratio. This CSAS paper helps outline the general rationale behind managing hatchery influence (production targets) with natural or wild salmon populations.
https://waves-vagues.dfo-mpo.gc.ca/library-bibliotheque/40687739.pdf
Second reason, MSF fisheries (all sectors - Recreational, FN, Commercial) could be a tool for fishery managers to employ to make adjustments to PNI.
Third Reason - Another good reason to mark 100% of hatchery production is to use MSF as a tool to shift fishery removals away from wild salmon.
Other Reasons:
1) Mass Marking allows fishery managers to combat hatchery straying - a well documented problem associated with many hatchery programs - marked fish could be easily targeted in fisheries, or egg capture for hatchery fence operations to cull out hatchery strays
2) MM fish are easier to identify in brood collection programs - having this tool could allow hatchery programs to pivot towards wild only brood capture
$$ Impediments to MM:
Lots of debate these days around how and when (timeline) to fully transition away from using Coded Wire Tags (CWT) in favour of Parentage Based Tagging (PBT) which is far more cost effective than CWT protocols. Currently the Pacific Salmon Treaty agreement between Canada and US plans to employ CWT until both countries are able to fully support the transition to PBT. Currently under the Pacific Salmon Treaty, Canada is only required to mark and insert CWT's into 10% of hatchery production - so we use CWT's on 100% of the 10% we are required to tag. Clipping and tagging fish with CWT's is expensive, so Canada has opted to only mark and CWT the 10% required under the Treaty.
PBT will be a game changer, as will introduction of automated mass marking machines. Canada is purchasing more MM trailers - so we are slowly taking the right steps.
Once we land on being fully PBT compliant, that will open the door to removing financial barriers to go with fully Mass Marking our hatchery production. My sense is the same old budgetary reasons Canada faces that prevent a more speedy move towards PBT and Mass Marking will gradually fade away.
Here's a very simple link and explanation of PBT.
https://www.dfo-mpo.gc.ca/science/p...erche/grdi-irdg/projects-projets/020-eng.html. Same lead author - more in depth analysis of PBT..
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8127719/