Innate susceptibility differences in chinook salmon Oncorhynchus tshawytscha to Loma salmonae (Microsporidia)
| Autor: | M. L. Kent, M. L. Adamson, R. W. Shaw |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Gills
Gill endocrine system Chinook wind Northwestern United States animal structures Aquaculture Aquatic Science Microsporidiosis Microbiology Fish Diseases Salmon Prevalence medicine Animals Parasite hosting Ecology Evolution Behavior and Systematics Salmonidae biology Strain (chemistry) Histocytochemistry Ecology medicine.disease biology.organism_classification Microsporidia Oncorhynchus Disease Susceptibility |
| Zdroj: | Diseases of Aquatic Organisms. 43:49-53 |
| ISSN: | 1616-1580 0177-5103 |
| DOI: | 10.3354/dao043049 |
| Popis: | Loma salmonae (Putz, Hoffman and Dunbar, 1965) Morrison & Sprague, 1981 (Microsporidia) is an important gill pathogen of Pacific salmon Oncorhynchus spp. in the Pacific Northwest. Three strains of chinook salmon O. tshawytscha were infected in 2 trials with L. salmonae by feeding of macerated infected gill tissue or per os as a gill tissue slurry. Intensity of infection was significantly higher in the Northern stream (NS) strain as compared to the Southern coastal (SC) and a hybrid (H) strain derived from these 2 strains. Both wet mount and histological enumeration of intensity of infection demonstrated strain differences. Survival in the NS strain was significantly lower than the other strains. The NS strain may represent a naive strain and be less able to mount an effective immune response against the parasite. |
| Databáze: | OpenAIRE |
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