Sixth day of invasive species Christmas: Six lamprey leaping

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Echo once again is running the Wisconsin Sea Grant version of the popular 12 days of Christmas carol. Produced by outreach specialist Tim Campbell in 2011, it brings 12 days of holiday invasive species cheer.

Things may have changed since then so feel free to update the song in the comments.

Today: Six lamprey leaping

Six lamprey leaping

Six lamprey leaping

This is some bad lamprey biology humor.

Lampreys are actually poor jumpers, especially when compared to trout and salmon, so a small low-head obstacle or ledge can prevent lampreys from moving further upstream while other fish leap over the obstacle.

Thus, physical barriers are one way managers are preventing lampreys from invading more streams in the Great Lakes basin.



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