First Report of viral Pathogens WSSV and IHHNV in Argentine Crustaceans

• Autores: Martorelli, Sergio Roberto; Overstreet, Robin M.; Jovonovich, Jean A.
• Año de publicación: 2010
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: VIRUS; CRUSTACEAN PATHOGENS; WSSV; IHHNV
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

The pathogenic penaeid shrimp viruses white spot syndrome virus (wSSv) and infectious hypodermal and hematopoietic necrosis virus (IhhNv) are reported for the first time from Argentina. They both occurred in wild crustaceans in Bahia Blanca Estuary, with wSSv detected by polymerase chain reaction (pCR) or real time quantitative pCR (qpCR) methods as infecting samples as high as 56% of the penaeid Artemesia longinaris Bate, 1888, 67% of the grapsoid Cyrtograpsus angulatus dana, 1851, and 40% of the introduced palaemonid Palaemon macrodactylus Rathbun, 1902. The highest detected copy number was 39,600 copies/μg dNA. IhhNv was tested for using pCR in only A. longinaris, in which it infected 30% of the sample. The presence or absence of cuticular white spots, diagnostic features of a chronic wSSv infection, was not a reliable indicator of wSSv detected by pCR or qpCR methods. The qpCR method was more sensitive than three pCR methods for detecting wSSv, presumably because of low copy numbers (< 103 copies/μg dNA) in several hosts. The low numbers may be related to temperature, season, IhhNv co-infection, or perhaps host. Introductions of the viruses could have originated from contamination by infected living animals, frozen products, or from alongshore currents from Brazil bringing the agents from as far away as 1700 or perhaps 5500 km.
Fil: Martorelli, Sergio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; Argentina
Fil: Overstreet, Robin M.. University of Mississippi; Estados Unidos
Fil: Jovonovich, Jean A.. University of Mississippi; Estados Unidos