期刊
ACTA AMAZONICA
卷 44, 期 4, 页码 527-532出版社
INST NACIONAL PESQUISAS AMAZONIA
DOI: 10.1590/1809-4392201400193
关键词
Artificial bait; Cichla spp.; Fisheries assessment
资金
- Rio Negro Foundation
- Liga de Eco Pousadas da Amazonia
- Fundacao de Amparo a Pesquisas do Estado do Amazonas - Amazonas Verde - Edital Tematico [008/2003]
- Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renovaveis - IBAMA
Sport fishing for peacock bass Cichla spp. in the Brazilian Amazon has increased in popularity and attracts anglers who generate significant economic benefits in rural regions. The sustainability of this fishery is partly dependent on the survival of fish caught through catch-and-release fishing. The objective of this work was to investigate, hooking mortality of Cichla spp., including speckled peacock bass (C. temensis Humbolt), butterfly peacock bass (C. orinocensis Humbolt), and popoca peacock bass (C. monoculus Agassiz) in the basin of the Negro River, the largest tributary of the Amazon River. Fish were caught at two different sites using artificial lures, transported to pens anchored in the river and monitored for 72 hours. A total of 162 individual peacock bass were captured and hooking mortality (mean % +/- 95% confidence intervals) was calculated. Mean mortality was 3.5% (+/- 5.0), 2.3% (+/- 3.5) and 5.2% (+/- 10.2) for speckled peacock bass, butterfly peacock bass, and popoca peacock bass, respectively. Lengths of captured fish ranged from 26 to 79 cm (standard length), however, only fish under 42 cm died. This research suggests that catch-and-release sport fishing of peacock bass does not result in substantial mortality in the Negro River basin.
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