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The selectivity of gillnets for the inhabiting forage fish community in the Santa Cruz Channel (PE, Brazil) was estimated an experiment using three mesh sizes (30, 40 and 50 mm). The SELECT was used to estimate retention curves through four models: normal location, normal scale, lognormal and gamma. Aggregated as catches in all fisheries, 28 species were identified. Selectivity parameters for species Opisthonema oglinum, Anchovia clupeoides and Cetengraulis edentulous were estimated. The normal scale model gave the best fit for all species studied. In the case of O. oglinum fishing in the Santa Cruz Channel the catches of young individuals are particularly significant in gillnets with a 30 mm mesh size. However, a possible increase in mesh size indicates little change in the length structure of the catch for larger sizes, but catches would certainly be reduced. Thus, regulations with increased mesh size should result in non-viability of fishing continuity with reduced catches.

SELETIVIDADE DE REDES DE EMALHAR PARA PEIXES FORRAGEIROS COM í­Å NFASE PARA Opisthonema oglinum EM UM ESTUÁRIO DO NORDESTE DO BRASIL

SELETIVIDADE DE REDES DE EMALHAR PARA PEIXES FORRAGEIROS COM íÅ NFASE PARA Opisthonema oglinum EM UM ESTUÁRIO DO NORDESTE DO BRASIL