Iris003's picture

Water fleas

Observed: 28th June 2009 By: Iris003Iris003’s reputation in InvertebratesIris003’s reputation in InvertebratesIris003’s reputation in Invertebrates
bug hunt fly larvae
Description:

<1mm

Identifications
  •  
    Likely ID
    Water flea (Daphnia sp.)
    Confidence: I'm as sure as I can be.
    ID agreements (): 2 People
    • Iris003Iris003’s reputation in InvertebratesIris003’s reputation in InvertebratesIris003’s reputation in Invertebrates
    • John BrattonInvertebrates expert
Species interactions

No interactions present.

Comments

Jonathan's picture

These are adults, not larvae

These are adults, not larvae

Jonathan
University of Edinburgh and Biodiversity Observatory (OU)

Iris003's picture

Larvae?

thanks Jonathan. I'll try to get a better picture,its good to know what they actually are.

Iris

John Bratton's picture

The black patches are the

The black patches are the resting eggs (ephippia) that water fleas produce when conditions are deteriorating, such as over-crowded or drying out. They act like a seed bank. They can stand drying out and can pass through the gut of a duck unharmed, so they are the dispersal mechanism.

John Bratton

Jonathan's picture

That's fascinating, John. I

That's fascinating, John. I have read about these resting eggs, but actually seeing them is something else! Thanks for sharing this information with us, and welcome to iSpot!

Jonathan
University of Edinburgh and Biodiversity Observatory (OU)

Iris003's picture

Water fleas

Dear Jonathan, have just put some more detailed pics up, you can really see the eggs now.

Iris

Iris003's picture

Water fleas

Dear John, thanks for the info on water fleas, we didn't know that they were carrying eggs so we went back to the pond and captured some. I have just made a new file of a more detailed pic of one.

Iris