Estimación de la producción secundaria de Paraprionospio pinnata (Spionidae, Polychaeta) frente a Bahía de Concepción, Chile

Resumen

The marine worm Paraprionospio pinnata population of a mud-bottom station at a depth of 65 m off Conception Bay, Chile, has been studied over the period October 1976 to October 1977. The epscies were counted, divided into year groups and the biomass of each group estimated as ash-free dry weight. Production estimate has been made by compunting mortality and residual biomass. Two year-class were present. The biomass, averaged over the year, was 1886 mg/m² and the production 4529 mg/m²/year, giving a P: B ratio of 2,4:1.

ARTIGOS

Estimación de la producción secundaria de Paraprionospio pinnata (Spionidae, Polychaeta) frente a Bahía de Concepción, Chile

Franklin Carrasco Vázquez; Dagoberto Arcos Rojas

Instituto de Biología, Universidad de Concepción, Chile

SYNOPSIS

The marine worm Paraprionospio pinnata population of a mud-bottom station at a depth of 65 m off Conception Bay, Chile, has been studied over the period October 1976 to October 1977. The epscies were counted, divided into year groups and the biomass of each group estimated as ash-free dry weight. Production estimate has been made by compunting mortality and residual biomass. Two year-class were present. The biomass, averaged over the year, was 1886 mg/m² and the production 4529 mg/m²/year, giving a P: B ratio of 2,4:1.

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Agradecimientos

Vaya nuestro reconocimiento a la Asociación de Industriales Pesqueros de Talcahuano, quien en convenio con la Universidad de Concepción prestó su valiosa asistencia financiera, posibilitando la realización del presente estudio.

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Fechas de Publicación

• Publicación en esta colección
  06 Jun 2012
• Fecha del número
  1980