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Crayfish I.D.

Started by Guest_joia2181_* , Jan 19 2008 03:02 AM

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8 replies to this topic

#1 Guest_joia2181_*

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Posted 19 January 2008 - 03:02 AM

Scooped today with some other fish. The spot is the outlet of the pond. That side gave me the best guarantee of no ice! All I can guess is there not Orconectes virilis. ???

cray1.jpeg.JPG 81.68KB 0 downloads

cray2.jpeg.JPG 167.87KB 0 downloads

cray3.jpeg.JPG 105.32KB 0 downloads

All comments welcome

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#2 Guest_ashtonmj_*

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Posted 19 January 2008 - 09:27 AM

I'll probably play with the photo's a bit, especially that first one. I can't even tell if it's a boy or girl because of the glare. It looks to be a Procambarus species. Not sure what you have up that way, possibly P. accutus...

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#3 Guest_smbass_*

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Posted 19 January 2008 - 09:55 AM

I am no crayfish expert but could it be Procambarus clarki the Red Swamp crayfish. I know I find introduced populations of these in Ohio along Lake Erie and they are supposed to be rather invasive and introduced a lot of places outside their native range. We should try to get Roger Thoma on here or e-mail links of such threads to him... I may even be able to arange that.

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#4 Guest_ashtonmj_*

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Posted 19 January 2008 - 02:21 PM

Clarkii claws are really sculptured though I think it's pretty obvious that tihs buggers claws are regeneratives so it doesn't help much.

No current records of clarkii in Mass. but acutus is native nearby and introduced.

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#5 Guest_joia2181_*

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Posted 19 January 2008 - 03:34 PM

Clarkii claws are really sculptured though I think it's pretty obvious that tihs buggers claws are so it doesn't help much.

No current records of clarkii in Mass. but acutus is native nearby and introduced.

I have3 others that were collected at the same time with the same looking claws. I dont think that they are regeneratives. I can take more photos if wanted. Just tell me what angles.

Shawn

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#6 Guest_mikez_*

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Posted 19 January 2008 - 04:03 PM

Don't know crayfish myself but maybe this link will help.
http://iz.carnegiemn...ssachusetts.htm

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#7 Guest_joia2181_*

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Posted 19 January 2008 - 04:31 PM

Don't know crayfish myself but maybe this link will help.
http://iz.carnegiemn...ssachusetts.htm

Thats the same site I use. I'd rather leave it up to people more educated thanmyself on ID'ing. Just looking at the pictures I'd go with Procambarus acutus acutus.

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#8 Guest_ashtonmj_*

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Posted 19 January 2008 - 04:48 PM

Yeah I checked up on a few museum collections online, including that one, and also happened to have some pictures of P. acutus from this past summer on my portable hard drive to check out. I'm much more confident now in my original ID Procambarus acutus.