The value of single vs repeat spawning in Steelhead populations.

As we head into peak Steelhead spawning in the lower Great Lakes here is an interesting read about the pros and cons of repeat spawners vs single spawners within Steelhead populations.

“Steelhead trout that spawn multiple times have more than twice the lifetime reproductive success of single spawning trout, suggesting there is a substantial benefit associated with repeat spawning. But it comes with a tradeoff, according to new research published in Proceedings of the National Academy of Sciences.”

Photo Source: John McMillan

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