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D. Southern New England - Mid Atlantic Yellowtail Flounder

The Southern New England-Mid Atlantic yellowtail flounder stock was last assessed at the Groundfish Assessment Meeting (GARM) in 2005 (Cadrin and Legault 2005). That assessment was based on a virtual population analyses (VPA) with a 7+ age group formulation. The stock exhibited poor recruitment and high fishing mortality rates, leading to very low abundance. Reference point estimation was derived from spawning stock biomass per recruit (SSB/R) and yield per recruit (YPR) analyses, with the assumption of constant recruitment (Cadrin 2003). The value for F40% (i.e. proxy for FMSY) was 0.26 and the corresponding SSBMSY and MSY was 69,500mt and 14,200mt respectively. VPA estimate of SSB (694mt) was 1% of SSBMSY and the estimate of F2004 (0.99) was four times FMSY, indicating that the stock was severely overfished and overfishing was occurring. The current benchmark assessment revises and updates the 1994-2007 fishery catch estimates to reflect recommendations at the GARM III data meeting (GARM 2007), and updates research survey abundance indices and analytical models (VPA) through 2007/2008 as recommended at both the GARM III Methods and Biological Reference Points meetings (GARM 2008a, GARM 2008b). The VPA analysis uses an age-6+ formulation by incorporating the entire time series of catch data and tunes to winter, spring and fall survey swept area biomass indices. Finally, reference points were re-evaluated using the revised VPA formulation, and a two-stanza recruitment approach (i.e. recruitment associated with SSB either greater than or less than 5000t) to determine the current status of the stock.