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Alaskan Fish Make Adjustments for Climate Change
By Angela Messina, December 23, 2014 @ 12:10 PM (EST)
Source: ScienceDaily

Although salmon are migrating later in the season due to climate change, the Dolly Varden, a type of Alaskan char, is able to adjust its migration to their later schedule in order to benefit from a rich diet of salmon eggs.

Dolly Varden depend on eating large amounts of salmon eggs, which are available for a narrow window of time in the summer, depending on the type of salmon. They must follow salmon populations closely in order to benefit from this short-lived feeding time.

Dolly Varden appear to take their cues from the presence of the salmon themselves, rather than environmental factors like temperature, to time their migration. This flexibility gives them an advantage in overcoming the complications associated with climate change.

Read more here.

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