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

• Autores: Wasiw G., José, Yépez P., Víctor
• Formato: artículo
• Fecha de Publicación: 2015
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revistas - Universidad Nacional Mayor de San Marcos
• Lenguaje: español
• OAI Identifier: oai:ojs.csi.unmsm:article/11103
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/11103
• Nivel de acceso: acceso abierto
• Materia: fresh water prawn; illegal fishing; length-weight relationship; density; biomass; camarón de río; pesca ilegal; relación longitud-peso; densidad; biomasa

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.