Did the sea lamprey cause a decline in the trout population?

Claim: The sea lamprey caused a great decline in the trout population.

Evidence: According to the sea lamprey graph, from 1953 to 1961 the sea lamprey went from 50000 of them for 275000 of them. This means that they had eight years of great feasts.

According to the trout graph, from 1948 to 1971 the lake trout went from 200000 of them to less than 1,000 of them. They were eaten like filet mignon.

According to the Journal of the fisherman, the sea lamprey started out in the Atlantic Ocean. Then they came into the Great Lakes. And finally, they started eating an all-you-can-eat buffet of lake trout.

Reasoning:

This indicates that the trout have been dying because of the sea lamprey. This is why the trout were less than 1000  and the sea lamprey jumped to 275,000.