| Registro completo |
| Provedor de dados: |
OceanDocs
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| País: |
Belgium
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| Título: |
El dorado, Salminus maxillosus (Pisces, Characiformes)en el Río de la Plata y Río Uruguay inferior
The dorado, Salminus maxillosus (Pisces, Characiformes), from the Río de la Plata and the lower reaches of the Uruguay river
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| Autores: |
Sverlij, S.B.
Espinach Ros, A.
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| Data: |
2007-11-05
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| Ano: |
1986
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| Palavras-chave: |
Migrations
Catch/effort
Sex ratio
Size distribution
Scale reading
Growth curves
Reproduction
Stomach content
Sex ratio
Reproduction
Http://aims.fao.org/aos/agrovoc/c_7014
Http://aims.fao.org/aos/agrovoc/c_6507
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| Resumo: |
Catch per unit effort (CPUE), lenght distribution, age, growth, reproduction, migrations and feeding were studies through samples collected with longlines and a gang of gill-nets of several mesh size. CPUE data showed a progressive decrease of the relative abundance in the Río de la Plata, during the study period. Age was studied from scales. Back-calculations of growth revealed the pressence of Lee's phenomenon. Means lenghts at age were greater in females. No significant difference was found in lenght-weight regressions from both sexes and sampling areas. Only young individuals from 1 to 6 years were caught. None of the fish studied had ripening gonads. Extensive migrations were recorded both in the Paraná and Uruguay rivers. Stomach contents analysis confirmed the ichthyoplagous habits of the species.
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| Tipo: |
Journal Contribution
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| Idioma: |
Espanhol
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| Identificador: |
Revista de Investigación y Desarrollo Pesquero, 6. p. 57-75
0325-6375
http://hdl.handle.net/1834/2032
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| Editor: |
Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
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