Dataset Detail
Dataset: Natural exposure of fry to M. cerebralis TAMs
| Project: Distribution and Seasonal Occurrence of Myxobolus cerebralis in the Lostine River, Oregon
| |
| Dataset Abstract: Rainbow trout and Chinook salmon fry were placed in sentinel cages in the Lostine River (Oregon) and were naturally exposed to triactinomyxons (TAMs). After exposure, a subsample of Chinook salmon and rainbow trout fry were held for five months. A subset were sampled by PCR. A separate subset of each was analyzed with histopathology (lesion scores), and spore counts were completed. | |
| Significance of Results: These data show that both rainbow trout and chinook salmon fry became infected following a 14-day river exposure. However, neither group developed signs of infection after being held in the lab for 5 months, and no spores were detected in either group. | |
| Relevance to Managers: These data indicate that resident juvenile Chinook salmon become infected following a 14-day in river exposure, but that the resulting infection is not severe and is unlikely to lead to disease. In addition, it was determined that the highest density of spawning redds occurred in an area where the exposure risk was low. | |
| Utility to Researchers: These data may be useful in a risk assessment of whirling disease impacts on anadromous salmonids in this region. | |
| Questions Generated: Do Chinook salmon infected as juveniles serve as carriers for the parasite, potentially spreading the infection into other nearby watersheds via straying? | |
| View the metadata | log in to download data. |
»
