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CRYAFISH EGGS CAN DIFFER BEWEEN LOCALITIES


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#1 centrarchid

centrarchid
  • NANFA Guest

Posted 04 April 2023 - 02:20 PM

I mess withe crayfish a lot, mostly as a potential human food. A student of mine is studying he Papershell / Calico Crayfish Faxonius immunis where we are making some interesting observations. Her study population has some major reproductive biology differences compared to Papershells I worked with 30 years ago. Mine came into berry in late fall with larger salmon colored eggs. Hers are coming into berry now with much smaller and nearly black eggs. From this I have a theory and she has to do a lot more measuring. My hand used in both images.

 

Mine.

20171123_125709.jpg

 

Hers.

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Edited by centrarchid, 04 April 2023 - 02:21 PM.

Find ways for people not already interested in natives to value them.

#2 cornandcrawlers

cornandcrawlers
  • NANFA Member
  • northeast iowa

Posted 29 April 2023 - 08:52 PM

that isn super neat. I tried breeding crayfish once in a 10 gallon tank but I never saw any of the females get buried. Do you think diet has to do with the egg color variation?






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