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.
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.
- Fifth day: Five boat wash stations
- Fourth day: Perch on ice
- Third day: Three clean boat steps
- Second day: Two red swamp crayfish
- First day: A carp barrier in the city