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Title: Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas - Brazil)
Other Titles: Rendimento por recruta do tucunaré Cichla monoculus capturado no Lago Grande de Manacapuru
Authors: Campos, Caroline Pereira
Carvalho, Carlos Edwar Freitas de
Keywords: Animals
Biological Model
Body Size
Growth, Development And Aging
Body Size
Models, Biological
Issue Date: 2014
metadata.dc.publisher.journal: Revista Brasileira de Biologia
metadata.dc.relation.ispartof: Volume 74, Número 1, Pags. 226-230
Abstract: We evaluated the stock of peacock bass Cichla monoculus caught by a small-scale fishing fleet in Lago Grande at Manacapuru. The database was constructed by monthly samplings of 200 fish between February 2007 and January 2008. We measured the total length (cm) and total weight (gr) of each fish. We employed previously estimated growth parameters to run a yield per recruit model and analyse scenarios changing the values of the age of the first catch (Tc), natural mortality (M), and fishing mortality (F). Our model indicated an occurrence of overfishing because the fishing effort applied to catch peacock in Lago Grande at Manacapuru is greater than that associated with the maximum sustainable yield. In addition, the actual size of the first catch is almost half of the estimated value. Although there are difficulties in enforcing a minimum size of the catch, our results show that an increase in the size of the first catch to at least 25 cm would be a good strategy for management of this fishery.
metadata.dc.identifier.doi: 10.1590/1519-6984.17312
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