Butterfish 2017 stock assessment update
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Butterfish 2017 stock assessment update
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    "This report on the butterfish (Peprilus triacanthus) stock is an update through 2016 of the previous benchmark assessment (NEFSC 2014). The recommended status determination is that the stock is not overfished, and overfishing is not occurring (Figs. 1-2). The Northeast Fisheries Science Center (NEFSC) Stock Assessment Workshop (SAW) 58 (NEFSC 2014) biological references points for butterfish were recalculated based on advice from the Mid-Atlantic Fishery Management Council (MAFMC) Science and Statistical Committee (Boreman 2017). The stock assessment update was completed by adding catch and indices for 2013-2016 to data from 1989-2012 used in the previous assessment (NEFSC 2014). Estimated fishing mortality and spawning stock biomass (SSB) in 2016 was 0.05 (CV(F2016) = 0.28) and 59,041 mt (130.2 million lb) (CV(SSB2016) = 0.25), respectively (Figs. 1-2). The 2016 fishing mortality rate (0.05) was 94% below the revised overfishing reference point FMSY proxy = 0.82. The 2016 SSB (59,041 mt) was 21% above the revised biomass reference point SSBMSY proxy = 48,681 mt (107.3 million lb) (CV = 0.25). SSBthreshold was one half the SSBMSY proxy, or 24,341 mt (53.7 million lb)"-- Page 1
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