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Yield-per-recruit analysis and management strategies for Atlantic croaker: Micropogonias undulatus

Yield-per-recruit analysis and management strategies for Atlantic croaker: Micropogonias undulatus,Luiz R. Barbieri,Mark E. Chittenden

Yield-per-recruit analysis and management strategies for Atlantic croaker: Micropogonias undulatus   (Citations: 1)
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Abstract.-The effect of different fishing mortality (Fl and natural mor­ tality (M), and age at first capture (tel on yield-per-recruit ofAtlantic croaker, Micropogoniasundulatus. in the lower Chesapeake,Bay and,North Carolina were evaluated with the Beverton-Holt model. Independent,of the level of M (0.20-0.35) or F (0.01-2.0) used,in simulations. yield-per-recruit values for Chesapeake,Bay were,consistently higher at te = 1 and decreased continu­ ously with increases,in t. (2-5). Al­ though,maximum,yield-per-recruit al­ ways,occurred at the maximum,level ofF(F=2.0), marginal increases in yield beyond,F =0.50-0.75 were,negligible. CurrentF (FCURl is estimated,to be be­ low the level that produces,maximum potential yield-per-recruit (FMAX) and at or below the level ofF0.1 if M ;<: 0.25. Although,modeling,results indicated
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