Sea Lamprey

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Sea Lamprey
300,000 lamprey
by tasha and hayley
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Sea Lamprey

• The common sea lamprey is like an eel. It has
  many teeth like this. They are
  12 to 20 inches long.
  They weigh 8 to 13
  ounces. They are
  grey, metallic violet and silver

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Suckers

• They sea lamprey use their teeth,
• to suck the blood out of the prey.
• They suck until blood comes out.
  
  

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Video

• http//www.youtube.com/watch?vz5VkGqjR18g
• ?

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Breeding

• Most sea lampreys breed in fresh water. After
  they lay the eggs, they usually die.

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Video II

• http//www.youtube.com/watch?v5pysO5JyDDk
• ?

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Facts About Sea Lamprey

• Lampreys have a round, sucker like jawless mouth
  filled with rows of horny teeth, and a rasp like
  "tongue." (See picture at right) An internal ring
  of cartilage supports the rim of the mouth.
  Although lampreys sometimes prey on small
  invertebrates, they are better known as predators
  on fish. Fastening on to living fish, lampreys
  rasp into the flesh and feed on the body fluids.
  A fish attacked by lampreys may be severely
  weakened or even killed.

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Pictures
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Lamprey in the Lakes

• Sea lamprey are native to the coastal regions of
  both sides of the Atlantic Ocean. They entered
  the Great Lakes through the Welland Canal about
  1921. They were greatly to the decline of
  whitefish and lake trout in the Great Lakes.
  Since 1956, the USA and Canada have worked on
  protecting this
• from lamprey.

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Lake Huron problems

• The sea lamprey are a problem in lake Huron. They
  have made many fish die and leave fishermen just
  ermen.

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A LOT

• The sea lamprey have a great population.
  Especially in Lake Huron. There is more than
  300000 in Lake Huron

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bibliography

• http//seagrant.wisc.edu/greatlakesfish/sealamprey
  .html
• http//www.gma.org/fogm/petromyzon_marinus.htm
• http//www.ucmp.berkeley.edu/vertebrates/basalfish
  /petro.html