POPULATION ASSESSMENT OF PRAWN CRYPHIOPS CAEMENTARIUS ON RIVERS OF THE SOUTH COAST OF PERU

Authors

  • José Wasiw G. Área Funcional de Investigaciones de Recursos en Aguas Continentales, Instituto del Mar del Perú, Callao
  • Víctor Yépez P. Área Funcional de Investigaciones de Recursos en Aguas Continentales, Instituto del Mar del Perú, Callao

DOI:

https://doi.org/10.15381/rivep.v26i2.11103

Keywords:

fresh water prawn, illegal fishing, length-weight relationship, density, biomass

Abstract

Fisheries and biological aspects of the freshwater prawn Cryphiops caementarius are reported based on surveys in the Ocoña, Majes-Camana, and Tambo rivers in the period September-December 2013. A small fraction of the population showed sizes larger than 120 mm, where the largest individuals were found in the Majes-Camana river (mode: 79 mm). There were a higher proportion of females in the Majes-Camana river, predominance of gonads in the incipient stage of maduration in individuals of the Ocoña and Tambo rivers, higher density (individuals/m2) and higher biomass (g/m2) in the lower altitudinal strata, and larger concentration rates in the Majes-Camana and Tambo rivers. Besides, the main physicochemical parameters of water quality showed favorable conditions for the prawn population development.

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Published

2015-06-03

Issue

Vol. 26 No. 2 (2015)

Section

Artículos Primarios

License

Copyright (c) 2015 José Wasiw G., Víctor Yépez P.

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How to Cite

Wasiw G., J., & Yépez P., V. (2015). POPULATION ASSESSMENT OF PRAWN CRYPHIOPS CAEMENTARIUS ON RIVERS OF THE SOUTH COAST OF PERU. Revista De Investigaciones Veterinarias Del Perú, 26(2), 166-181. https://doi.org/10.15381/rivep.v26i2.11103