C s a s canadian Science Advisory Secretariat



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Reference Points



Estimates of Fmsy from the four models range from 0.036 to 0.075 (Table 9), and of Fcol from 0.075 to 0.160. Estimates of SSNmsy decreased with estimated or assumed productivity from 40,089 females for an of 2.0 to 27,945 females for an of 3.6. The spawning biomass per recruit reference points F35% and F45% met or exceeded Fcol in most model runs and are not safe reference points for porbeagle fisheries. These reference points were calculated using the selectivities for the Shelf-Edge fishery, but given the similarity to the selectivities for the Basin fishery, reference points for the Basin would likely be close to the values for the Shelf-Edge. Reference points for the NF-Gulf fishery would likely differ, although little fishing is presently occurring in that region (Table 4).




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