Like to see hatchery production further upriver More can benefit N/S/L Thompson Upper Fraser FN may be concerned about big hatcheries (e.g., in Shuswap) in terms increased pressure on natural stocks Work with natural fish from region first, before transplanting (sometimes works, sometimes don’t) need to talk to FN in area about how they feel – Wanli Ou Question about hatcheries are they managed to a certain ratios of wild/natural – Ryan annual assessment of each line of production goals, rearing/release strategies, – – operational guidance Guidelines on broodstock proportions/contributions, but varies by production and objectives (i.e., different objectives for harvest-focused hatchery like Robertson) Need to further about hatcheries Try low, medium, high harvest see what happens – Question about CTC includes constant natural mortality – Gayle [missed] – Any way to vary mortality parameters of DGM need to learn more some parameters can be varied over a run, some would Gayle – – have to be varied between runs interested to see what effects of variation in natural/incidental mortality rates – Chuck what is the management action, don’t want to send TWG down a path of – investigating something that has no potential for actual action and is just academic interest Dave but may be useful in combination with looking at increased hatchery production – how much enhancement gets consumed by predators – Tony Roberts, Jr. [missed] Concerns with hatcheries produces lots of fish than come down Johnstone Strait with our fish – Our fish get caught in these mixed fisheries Many of our streams poorly Need to do on-ground work to determine where our fish are going What is the composition of fishery Jeff want to see effect of actions on local populations –
Like to see hatchery production further upriver More can benefit N/S/L Thompson Upper Fraser FN may be concerned about big hatcheries (e.g., in Shuswap) in terms increased pressure on natural stocks Work with natural fish from region first, before transplanting (sometimes works, sometimes don’t) – need to talk to FN in area about how they feel Wanli Ou Question about hatcheries – are they managed to a certain ratios of wild/natural Ryan – annual assessment of each line of production – goals, rearing/release strategies, operational guidance Guidelines on broodstock proportions/contributions, but varies by production and objectives (i.e., different objectives for harvest-focused hatchery like Robertson) Need to further about hatcheries Try low, medium, high harvest – see what happens Question about CTC – includes constant natural mortality Gayle – [missed] Any way to vary mortality parameters of DGM Gayle – need to learn more – some parameters can be varied over a run, some would have to be varied between runs – interested to see what effects of variation in natural/incidental mortality rates Chuck – what is the management action, don’t want to send TWG down a path of investigating something that has no potential for actual action and is just academic interest Dave – but may be useful in combination with looking at increased hatchery production – how much enhancement gets consumed by predators Tony Roberts, Jr. [missed] Concerns with hatcheries – produces lots of fish than come down Johnstone Strait with our fish Our fish get caught in these mixed fisheries Many of our streams poorly Need to do on-ground work to determine where our fish are going What is the composition of fishery Jeff – want to see effect of actions on local populations
SBC-Chinook-March-25-26-workshop-Notes.docx