Dinâmica populacional do Surubim-tigre, Pseudoplatystoma Tigrinum (Valenciennes, 1840) no médio Amazonas (Siluriformes, Pimelodidae)

  • RUFFINO M
  • ISAAC V
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Abstract

Dados de comprimento e de captura e esforço da pesca do surubim-tigre (Pseudoplatystoma tigrinum) obtidos durante o período de 1993 a 1996, no Médio Amazonas, foram utilizados para descrever as pescarias e estimar as taxas de crescimento e mortalidade da espécie. Os parâmetros populacionais médios estimados foram Loo =180,0 cm (comprimento total), Woo = 56,56 kg, k = 0,29 ano-1, C = 0,9; WP = Novembro, M = 0,47 ano-1, Z = l ,42 ano-1, F = 0,95 ano-1 e Lc = 87,0 cm. A análise do rendimento por recruta mostra que o estoque está sendo explorado em seu limite de sustentabilidade.Catch and effort data and length data series of striped catfish Pseudoplatystoma tigrinum obtained through 1993 to 1996 in the Lower Amazon, Brazil, were used to describe the fishery and to estimate growth and mortality rates. Mean population parameters estimated were = 180,0cm (total length), Woo = 56,56 kg, k = 0,29 year1, C =, WP = November, M = 0,47 year-1, Z = l,42 year1, F = 0,95 year1 e Lc = 87,0 cm. Yield-per-rccruit analysis shows that the stocks are being exploited near to limit of sustainability.

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RUFFINO, M. L., & ISAAC, V. J. (1999). Dinâmica populacional do Surubim-tigre, Pseudoplatystoma Tigrinum (Valenciennes, 1840) no médio Amazonas (Siluriformes, Pimelodidae). Acta Amazonica, 29(3), 463–463. https://doi.org/10.1590/1809-43921999293476

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