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Archidistoma aggregatum

Garstang, 1891


David Kipling Archidistoma aggregatum from S Pembs for João Pedro Silva. This is an example (I think!) of the unusual situation of fused zooids that don't have a shared cloacal opening. To compare with the Sesimbra species.

Message posted on NE Atlantic Tunicata on 04 Jul 2013
Liz Morris

Liz Morris Hi David Kipling, In situ the siphons lookedreally quite large and 'paired' compared to Polyclinum aurantium. But you're right, the images here dont look Perophora like at all. I have preserved something that I think is P.aurantium from nearby, similar to Rachel's (if you want it? ), but sadly these more perophora like ones spoiled as they were on rock that got squished. Oh well, I guess I'll just have to dive again :)

David Kipling How about Archidistoma aggregatum?

Liz Morris Nail on head springs to mind. Good detective work Inspector Kipling :)

Liz Morris thank you :)

David Kipling Archidistoma has zooids that are fused but without a common cloaca - hence the paired appearance. You do need to get a strobe though so I don't get misled by your colour balance Liz :). I can recommend the TG-1 that Kate Lock uses ...

Kate Lock recommended by Rob last year and now used by Sarah, myself and young Jacque Picton too.... It is the Olympus tough TG-1.... which is better to use with the housing although can go to 12m by itself (so no worries about flooding!)....Pretty good with just the internal flash...Sarah Bowen uses with a spotter light....and I either use a spotter torch - see the firework anenome/CU photos I took in Ireland ....or I add a strobe for a more balanced lighting...for a compact point and press excellent!!!

Liz Morris Why thank you.. I need an upgrade for sure. I believe that mine is now doing well at 7 years old (or maybe more!)

Kate Lock Obviously snazzier options out there but this is cool if on a budget like me!!

David Kipling Yes but I would argue it hits a real sweet-spot of performance for a P&S, and the next spot upwards in price bring compromises with size, usability, etc (eg my rig).

Message posted on NE Atlantic Tunicata on 17 Sep 2013
Taxonomy
Animalia (Kingdom)
  Chordata (Phylum)
    Tunicata (Subphylum)
      Ascidiacea (Class)
        Aplousobranchia (Order)
          Polycitoridae (Family)
            Archidistoma (Genus)
              Archidistoma aggregatum (Species)
Associated Species