Crayfish Respiration

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Crayfish Respiration
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What is another word for RESPIRATION?

• Breathing

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By adding a drop of food coloring to just above
the abdomen of a crayfish, you can watch to see
how a crayfish moves the water around itself to
help it breathe.

4
See the food coloring where the thorax meets
the abdomen? It was added below the water
surface.
5
Can you see food coloring in front of the
crayfish now?

• Does the water move from front-to-back or
  back-to-front?
• Answer back-to-front

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What part of the crayfish is the water moving
past during respiration?

• Gills

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Where are the gills located on the crayfish?

• Under the carapace, in the thorax.

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What body parts are used to move the water past
the gills?

• Maxillae
• Swimmerets (sometimes)

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Did you know

• that a crayfish does not have to use its maxillae
  or swimmerets to move water past the gills if it
  is walking?