dejayM's picture

Tiny clam

Observed: 5th June 2013 By: dejayM
Biological Recording In ScotlandHighland Biological Recording GroupOrkney Biodiversity Records Centre
dejayM’s reputation in InvertebratesdejayM’s reputation in InvertebratesdejayM’s reputation in InvertebratesdejayM’s reputation in Invertebrates
single
small group
larger
Description:

Another attempt to get recognition. maybe agreements, for the tiny limpet-like oyster.
One of three British species - the smallest.
Posted here also http://www.ispot.org.uk/node/323303
CORE Edit. ID Panel ......Appears to be attached via strong threads through a small opening.

Identifications
Species interactions

No interactions present.

Comments

JoC's picture

Heteranomia squamula

Picture and description fits this:
http://naturalhistory.museumwales.ac.uk/britishbivalves/browserecord.php...
Now, what about the barnacles?
Jo

Jo

dejayM's picture

not ready

Oh dear, I was hoping no-one would ask - THANKS Jo!
But I have been studying them for a while, taking photos of individuals and colonies. I am simply not ready, though in a few of my posts they have made 'guest' appearances.
This one is quite likely to be the exotic and invasive - Austrominius modestus (Elminius modestus). Four equal plates should not be enough to identify it; but it is, even though it is not quite clear in this picture. I am pretty certain though.

Web pictures showing individual (lone) ones are rare but there is one here
http://eol.org/data_objects/23097755
I have a few worms and squirts to post before barnacles.

Chris Johnson's picture

Barnacles

Your barnacles have 6 plates and are Semibalanus balanoides. The two plates either side of the anterior plate are very narrow where they join the centre and easily overlooked, but clearly seen in your images.
Chris

JoC's picture

appears to be attached via?

you seem to have left us in suspense in your original description - you should be able to edit it to add the rest of the sentence. And I think A. modestus looks about right.

Jo

dejayM's picture

hanging

Of course, we should all know by now that the ID panel cannot be altered. So....

[via]...strong threads through a small opening.

I now read these are called byssal attachments. Mussels have these (reading on) but from their hinges.
http://jeb.biologists.org/content/199/4/1005.full.pdf
These were hardly noticeable as I prised away this really tiny shell.
I MUST say (write) that this sort of detail often gives a useful, often final, clue to ID.

JoC's picture

No edit of ID panel

I did not know that. I just checked one of my posts, and you are right, ID panels cannot be edited. Thanks for the clarification.

Jo

dejayM's picture

winkle cam

Jo - I had quite forgotten that you had posts...how else would you have gathered 'stars' in Inverts and Plants?!
It seems so long ago that I mentioned the Winkle Cam to you.
I had fun, just now, 'tracking' your highly specialised posts on sea 'weeds' and I have even managed to agree with some - I had not followed them properly before.
Now tell me - how, in post http://www.ispot.org.uk/node/330293 did you do the Microphotos? Did you have the scope (what is it?) with you on holiday? Did you just fire your camera into it?
ðj

JoC's picture

A zeiss binocular low power microscope

I usually take it when I go away. I use an ordinary camera held over one eyepiece.
Most seaweeds travel reasonably well in a plastic container, so a couple of days before a photo is not usually a problem.

Jo