nightfly's picture

Freshwater mussel.

Observed: 12th February 2012 By: nightflynightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebrates
9 Feb 12 (24)
9 Feb 12 (26)
Description:

4 and 6cm long.

Identifications
Species interactions

No interactions present.

Comments

dejayM's picture

Crimped

Origin 4.16pm
C
Do you have a view on JBs ID? He is usually very good at this sort of thing.
It appears to have the 'crimp' mark associated with Duck Mussel (Anodonta anatina)
However it is associated with slow rivers or lakes (as you said about Swan - Anodonta cygnea)
http://www.museumwales.ac.uk/media/9481/fw-mussel-2.jpg
http://www.museumwales.ac.uk/media/9480/fw-mussel-1.jpg
John - what feature or instinct triggered the ID?
ð
Edit - Spelling

John Bratton's picture

I think Margaritifera is more

I think Margaritifera is more parallel-sided. It doesn't have the obtuse angle pointing to the coin. There is nothing unusual about finding Anodonta in slow rivers so long as there is some soft sediment for them to burrow into. I wouldn't want to stick my neck out so far as to say which Anodonta it is.