Geoff --
With regards to Dodecaceria, you may want to contact Rudolf Fischer. He's
part of a group of people who have been working out how Dodecaceria deposit
their calcium carbonate tubes. I think that they will have interesting
ideas about biochemical mechanisms, and how these compare to those in other
carbonate-depositing metazoans. They've been working on fossil and living
material -- the living material was primarily D. fistulicola (which is, I
think, the correct name for the worm commonly known as "D. fewkesi") from
the northeast Pacific.
His email address is: r.fischer at mbox.geowi.uni-hannover.de
Cheers,
Bruno
______________________________________________________________________
Bruno Pernet Department of Zoology University of
Washington phone: 206-543-1484 Box 351800 fax: 206-543-1273 Seattle, WA
98195-1800 email: pernet at fhl.washington.edu
______________________________________________________________________
On Wed, 1 Apr 1998, Geoff Read wrote:
> Annelida folk,
>> A serious question - but be careful out there in Net land - it's April
> one!
>> I am trying to think of the polychaetes which in some way can secrete
> calcium carbonate. So far I have the obvious in the tubes (& opercula) of
> Serpulidae, and also those of the cirratulid Dodecaceria fewkesi ...
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This species bores a furrow
into the shell near the aperture and produces a calcareous tube along
the columella toward the appex of the shell" and (p. 609) "the tube was
covered by a thin calcareous layer of unknown origin."
------------------------
Dauer, D. M. 1991. Functional morphology and feeding behavior of
Polydora commensalis (Polychaeta: Spionidae). -- Ophelia Suppl. 5:
607-614.
Gibson, P. H. & R. B. Clark. 1976. Reproduction in Dodecaceria caulleryi
(Polychaeta: Cirratulidae). -- J. mar. biol. Ass. U.K. 56: 649-674.
Hatfield, P. A. 1965. Polydora commensalis Andrews -- larval development
and observations on adults. -- Biol. Bull. 128: 356-368.
McIntosh, W. C. 1911. Notes from the Gatty Marine Laboratory, St.
Andrews. -- No. XXXII. 4. On the Cirratulidae dredged by H.M.S.
'Porcupine' in 1869 and 1870. -- Ann. Mag. nat. Hist. Ser. 8, 7:
162-168, pls V-VII.
-------------------------------------------------------------
Greetings from a grey and rainy Copenhagen,
Mary
-------
Mary E. Petersen
Zoological Museum, University of Copenhagen
mepetersen at zmuc.ku.dk
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