Sea Lamprey Trivia

3. One sea lamprey can kill up to _______ pounds of fish during its 12-18 month feeding period.
5. Sea lampreys are __________ in the Great Lakes.
6. Sea lampreys can live in both _____ and fresh water.
7. Four species of ________ lampreys also live in the Great Lakes.
12. A lamprey larva will __________________ into a juvenile lamprey.
13. An organism that takes its nutrients from a host organism.
14. Sea lampreys have a razor-sharp ________ that cuts/rasps through the host fish's scales and skin.
15. Sea lampreys feed on the _______ and other body fluids of a host fish.
16. Scientists lure adult lampreys into traps using scent chemicals called ______________.
20. Sea lampreys came into the Great Lakes from the _________ Ocean.
21. Construction of the Welland ________ allowed sea lampreys to swim into Lake Erie.
22. Sea lamprey larva eat dead or ____________ matter off of stream bottoms.
24. Adult sea lampreys are caught using barriers and _______ when they are in rivers.
27. Adult sea lampreys return to the river to ________.

1. Sea lamprey teeth are made out of _________, which is what your nails and hair are made out of.
2. Scientists treat rivers with a chemical called a _______________ to kill off the lamprey larvae.
4. A lamprey's skeleton is made of this instead of bone.
8. Sea lamprey __________ can live in rivers for 3-10 years.
9. The first recorded observation of a sea lamprey in the Great Lakes was in 1835 in Lake _________.
10. Overfishing, along with sea lamprey predation, nearly destroyed the lake ________ fishery in the Great Lakes.
11. Sea lampreys use their ________ to grip the side of the host fish.
12. Sea lampreys can grow up to a ________ long.
15. Sea lampreys threaten a Great Lakes fishing industry worth approximately 7 _________ dollars per year.
17. One female sea lamprey can produce approximately 100,000 ______.
18. A natural barrier to sea lamprey migration between Lake Ontario and Lake Erie was __________ Falls.
19. In 1954, the U.S. and __________ created the Great Lakes Fishery Commission to manage the sea lamprey problem.
23. Lampreys are often confused with this animal.
25. The GLFC spends $25 million dollars per year to kill roughly ________ million lampreys.
26. Instead of having a mouth with _______, sea lampreys have a large oral disk filled with sharp teeth.