Estudio sobre necrosis pancreática infecciosa, anemia infecciosa del salmón y septicemia vírica hemorrágica en salmónidos del embalse Alicura y su importancia en el comercio
The main objective of this work was to demonstrate that the upper Limay river is free of infectious hematopoietic necrosis etiologic (NHI), viral haemorrhagic septicemia (VHS) and infectious salmon anemia (ISA). This area includes the Alicura reservoir, where the bulk of Argentinean trout production...
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| Formato: | Tesis de maestría acceptedVersion |
| Lenguaje: | Español |
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Facultad de Ciencias Veterinarias
2015
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| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=avemaster&cl=CL1&d=HWA_1276 http://repositoriouba.sisbi.uba.ar/gsdl/collect/avemaster/index/assoc/HWA_1276.dir/1276.PDF |
| Aporte de: |
| Sumario: | The main objective of this work was to demonstrate that the upper Limay river is free of infectious hematopoietic necrosis etiologic (NHI), viral haemorrhagic septicemia (VHS) and infectious salmon anemia (ISA). This area includes the Alicura reservoir, where the bulk of Argentinean trout production comes from. Samples from 1249 adult individuals were collected on eight occasions between 2006 and 2008, including wild and farmed rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta) and Atlantic salmon (Salmo salar). Controls were also performed on hatcheries that produce fingerlings to be grown in the reservoir. Organ samples were taken from each individual for histological analysis. In addition, 20 individuals per sampling event were analyzed using PCR techniques. No histopathological lesions compatible with the diseases under study were found, nor specific virus sequences detected. The risk of introduction of two diseases, SHV and AIS, in the area was evaluated. The potential routes of entry were identified, including fry and eggs, aquatic, processing plants and mechanical transmission. For each, secondary routes were defined and their probability of occurrence quantified. The results showed that under current conditions, the risk of introduction of these agents is negligible. Trucks carrying fish and sport fishing equipment were the only routes that yielded a probability larger than zero. |
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