At 03:05 PM 28-02-01 -1000, Geoff Read wrote:
>Orrhage, L. 2001. On the anatomy of the central nervous system and the
>morphological value of the anterior end appendages of Ampharetidae,
>Pectinariidae and Terebellidae (Polychaeta). - Acta Zoologica 82(1):57-71.
>>It might interest scorers of family character states that: " ... the
>ampharetids,
>the pectinariids and the terebellids bear no antennae and no palps
>and that their buccal tentacles belong to the alimentary canal."
I don't know about terebellids and pectinariids, but I have some pretty
great video of an ampharetid from Maine feeding in a dish of mud and
organic bits. Once comfortable in dish, the animal tests the area with
tentacles, then very tentatively begins the eversion of the "palps", which
to me look like multi-fingered gloves. They very clearly come out from
inside the mouth, like a tongue, so would seem to be more homologous
with some kind of eversible proboscis structure than with a structure
more commonly always external. Best, Les.
*****************************
Les Watling
Professor of Oceanography, and
Pew Fellow in Marine Conservation
School of Marine Sciences
Darling Marine Center
University of Maine
Walpole, ME 04573
Ph: 207-563-3146, x248
Fax: 207-563-8407
e-mail: watling at maine.edu
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