Research models how deadly virus moves among Pacific salmon, trout

Credit: U.S. Geological Survey.

For the first time researchers studying a deadly virus modeled how it spreads to young trout and salmon in the waters of the Columbia River Basin, showing that migrating adult fish are the main source of exposure.

The ecological modeling of the infectious hematopoietic necrosis virus, or IHNV, shows how it moves across the landscape over time, providing a crucial understanding for managers of hatchery programs attempting to protect juvenile salmon and trout.

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