Download Michigan Fish Habitats Ms. D 2005 Rusty Crayfish

Rusty Crayfish
Spiny Water Flea
Michigan Fish Habitats
Ms. D
2005
Flowering Rush
Purple
Loosestrife
http://www.great-lakes.net/envt/flora-fauna/invasive/invasive.html
Zebra Mussel
Eurasian
Milfoil
Ruffe
Why are freshwater
habitats Important?
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All living things need water
Very diverse in species
Declining rapidly
Recreation
More species rely on coast lines
than deep water
Invasive Species
• What are they?
any species, including its seeds, eggs, spores,
or other biological material capable of
propagating that species, that is not native to
that ecosystem; and whose introduction does
or is likely to cause economic or
environmental harm or harm to human
health.
Invasive Species
• Round Goby – from Eurasia in
Ballast H2O, they take over prime
spawning sites & change habitat
• Sea Lamprey - predaceous, eel-like
fish native to Atlantic Ocean. Came
through the Welland Canal. Cause
decline of whitefish and lake trout.
• White Perch – from Atlantic coast
came through, Erie and Welland
canals. Prolific competitors cause
declines of walleye populations.
• Common Carp - from Caspian Sea
region and east Asia. degrade shallow
(by turbidity) leading to declines in
waterfowl and native fish
Invasive Activity
• You will need:
– A invasive species card
• Answer the following questions:
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Who is it?
Describe your species and their environment
How & and when did they get here?
What damage does it inflict?
Salmon in
Michigan
• Coho or Silver and King or Chinook
• Continuous planting for fisherman
• Found in all five lakes, pressuring the
“Alewives” population
• Return to their release site when 3-5 yrs old to
spawn and die
• Are they invasive?
Spawning
• Alevin – when egg hatches, comes out of gravel
when entire yolk sac is used up
• Fry – hides on edge of stream
• Fingerling – length of finger
• Smolt – loses spots, begins downstream
journey
• Adult – head to ocean (lake) where more food
• Spawner – returns to river it was born, does not
eat, uses all energy to battle way upstream
Native Michigan Fish
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Longnose Gar
Burbot
Yellow Perch
Brook Trout
Lake Herring
Northern Pike
Lake Whitefish
• Lake Sturgeon
146 types of Fish in Michigan
waterways
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HABITAT; The area or environment
where an organism or ecological
community normally lives or occurs
•Cold water dwellers (35-65)
•Fresh Water
•Clean Water (pollution indicators)
•Other indicators include insects and larva
Pollution Indicator Activity
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Ice cube tray
Spoon
Bucket
Vials
Alcohol
Worksheet
Koi Spawning
• Should be two males to one female
• Males sandwich female to release eggs
• Males simultaneously release milt which
fertilizes most eggs as they are released
• The eggs are very sticky and remain wherever
they land
• If parents are left in spawning environment
they will eat all the eggs
Egg Removal
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Parents must be removed
Water drained
Eggs removed gently with a paint brush tool
Eggs must then be placed into a small tank
with a bubbler and thermometer
Koi
• Eggs hatch in 24hrs
• Should be around 75
degrees
• In the first day they
need to be fed “boiled
egg yolk” and then crushed koi food
• To reduce a vitamin C deficiency give pieces of
DARK green lettuce
• Ph of 7 is preferred, ph difference correlates to fry
color