Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas – Brazil)
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 e...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
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| Series: | Brazilian Journal of Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000100029&lng=en&tlng=en |
| _version_ | 1811194563837034496 |
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| author | CP Campos CEC Freitas |
| author_facet | CP Campos CEC Freitas |
| author_sort | CP Campos |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-12T00:28:53Z |
| format | Article |
| id | doaj.art-df0048d0cf274f0197d42dc79ebde88a |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-04-12T00:28:53Z |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-df0048d0cf274f0197d42dc79ebde88a2022-12-22T03:55:25ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-437574122623010.1590/1519-6984.17312S1519-69842014000100029Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas – Brazil)CP CamposCEC FreitasWe 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000100029&lng=en&tlng=ensustainable yieldoverfishingfloodplain lakestucunaréRio Amazonas |
| spellingShingle | CP Campos CEC Freitas Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas – Brazil) Brazilian Journal of Biology sustainable yield overfishing floodplain lakes tucunaré Rio Amazonas |
| title | Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas – Brazil) |
| title_full | Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas – Brazil) |
| title_fullStr | Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas – Brazil) |
| title_full_unstemmed | Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas – Brazil) |
| title_short | Yield per recruit of the peacock bass Cichla monoculus (Spix and Agassiz, 1831) caught in Lago Grande at Manacapuru (Amazonas – Brazil) |
| title_sort | yield per recruit of the peacock bass cichla monoculus spix and agassiz 1831 caught in lago grande at manacapuru amazonas brazil |
| topic | sustainable yield overfishing floodplain lakes tucunaré Rio Amazonas |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000100029&lng=en&tlng=en |
| work_keys_str_mv | AT cpcampos yieldperrecruitofthepeacockbasscichlamonoculusspixandagassiz1831caughtinlagograndeatmanacapuruamazonasbrazil AT cecfreitas yieldperrecruitofthepeacockbasscichlamonoculusspixandagassiz1831caughtinlagograndeatmanacapuruamazonasbrazil |