Stop the Spread of Invasive Species

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Stop the Spread of Invasive Species

• Safe Harvest and Disposal of Aquatic Plants

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Aquatic Exotics in the Great Lakes
Zebra mussel
Purple loosestrife
Rainbow smelt
Tubenose goby
Sea lamprey
Fishhook waterflea
Spiny waterflea
Eurasian watermilfoil
Alewife
Round goby
Lumholtzi waterflea
Echinogammarus
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Methods of Spread

• Boaters
• Anglers
• Bait transport
• Fish stocking
• Aquaculture
• Aquatic plant harvesters

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Aquatic Exotics in the Great Lakes
Zebra mussel
Purple loosestrife
Rainbow smelt
Tubenose goby
Sea lamprey
Fishhook waterflea
Spiny waterflea
Eurasian watermilfoil
Alewife
Round goby
Lumholtzi waterflea
Echinogammarus
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Zebra musselDreissena polymorpha

• Transported as
• Larvae
• Adults

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Eurasian watermilfoilMyriophyllum spicatum

• Transported as
• Seeds
• Roots
• Fragments

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Purple loosestrifeLythrum salicaria

• Transported as
• Seeds
• Stems
• Roots

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Waterfleas
Daphnia lumholtzi (Lumholtzi waterflea)
Bythotrephes cederstroemi (BC)
Cercopagis pengoi (Fishhook waterflea)
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Steps for Harvesters

• Carefully inspect and remove plants from

• Cutting blades

• Lift arms

• Hydraulic systems

• Weed conveyor belts

• Barge equipment

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Steps for Harvesters
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Stop the Spread of Invasive Species

• Becoming aware

• Accepting responsibility

• Taking action

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Written and produced byMike KlepingerMichigan
Sea Grant2001
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