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Ascidiella scabra

(Müller, 1776)


Derek Weldon Sea squirt - what types?

David Kipling You could count the guard hairs of the first picture and work if it's Ascidiella scabra or aspersa, Dawn

Message posted on Seasearch North East England on 29 Sep 2013
Bernard Picton Ascidiella scabra on kelp blade, Larne Lough. There seem to be two similar solitary squirts here (possibly a few small Corella eumyota as well).

Erling Svensen Do you have a close up of the Corella eumyota?

Message posted on NE Atlantic Tunicata on 19 Aug 2013
James Lynott Lots of squirts to be found in Loch Long last night. This photo was taken at about 20m and contains a number of different species. I hope I am right with the IDs of Ascidia virginea, Ascidia mentula, Corella parallelogramma, Ciona intestinalis, Polycarpa pomaria, and possibly Ascidiella scabra? I'm not sure of the cream coloured one to the right of the A. mentula either.

David Kipling Gosh, what a mix! I'd agree with you as far as I can see. The aspersa//scabra distinction is still one that's difficult for me (although I gather this has been a discussion for decades!) and there may actually be something of a species complex here if you talk to Bernard. Apparently there's a big difference in the number of guard hairs (so start looking down siphons if you can do that without them closing!) and also the eggs of one but not the other species float (yeah, right ...).

Message posted on NE Atlantic Tunicata on 28 Sep 2013
Taxonomy
Animalia (Kingdom)
  Chordata (Phylum)
    Tunicata (Subphylum)
      Ascidiacea (Class)
        Phlebobranchia (Order)
          Ascidiidae (Family)
            Ascidiella (Genus)
              Ascidiella scabra (Species)
Associated Species