SciELO - Scientific Electronic Library Online

 
vol.29 número1Efecto de la densidad poblacional y temperatura en truchas arco iris (Oncorhynchus mykiss) inoculadas con Piscirickettsia salmonisSusceptibilidad comparativa de trucha arco iris y salmón coho a ectoparásitos de importancia económica índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Archivos de medicina veterinaria

versión impresa ISSN 0301-732X

Resumen

SIEVERS, G.; LOBOS, C.  y  INOSTROZA, R.. Variación de la intensidad de infestación con formas infectantes del isópodo Ceratothoa gaudichaudii en salmones de cultivo en el sur de Chile. Arch. med. vet. [online]. 1997, vol.29, n.1, pp.121-125. ISSN 0301-732X.  http://dx.doi.org/10.4067/S0301-732X1997000100014.

Variation of infestation intensity with infective stages of the isopod Ceratothoa gaudichaudii in farmed salmon in the south of Chile The study was carried out at a salmon farm located on Guar Island (42º, 41'S.; 73º, 01'E.), Xth Region, Chile. 500 salmon (Salmo salar) were sampled randomly from an isolated cage every three months. On each occasion the number and the size of the isopod parasite Ceratothoa gaudichaudii settled in the oral cavity and gills were determined. Prevalence ranged from 33.4% to 98.8% in the 16 months of the assay. The highest number of infective stages (mancas) of the parasite were found in spring and during the summer; this produced the increment of small size parasites in autumn and winter. The number of medium and large size parasites increased during the summer months. The importance of wild fish, and specially of Trachurus murphyi, as the normal host of C. gaudichaudii and its role as a main source of infestation for cultured salmon is discussed.

Palabras clave : Isopod; Ceratothoa gaudichaudii; infestation; farmed salmon.

        · resumen en Español     · texto en Español

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons