[Annelida] Worm ID Help

Geoff Read via annelida%40net.bio.net (by g.read from niwa.co.nz)
Thu Mar 22 21:46:34 EST 2007


Rachel D'Silva wrote:
> I am a MPhil student with my project in Discovery Bay,Jamaica. I have
> found a worm on some of my coral samples. Can anyone help me identify
> it or point me in the right direction? You can view the photos on the
> web link below. 
> http://picasaweb.google.com/rachdsilva/Worm

Rachel, it's Family Nereididae. One can be very wrong with id'ing 
nereids from gross features, but just from the head it might even be 
genus Nereis, although looking at the parapodia the neuropodial branches 
look suspiciously better developed than the notopodial. But you need to 
examine for presence and the pattern of paragnaths  (chitinised bars or 
points) on the proboscis - this is essential for nereidids - and also 
look for the presence of any distinctly different (from the rest) 
falcigers (compound chaetae (or might even be simple chaetae (thinking 
Ceratonereis here)) with hooked blade tips)) especially in the parapodia 
of posterior segments. If present they will be 1-2 per parapodium.

Geoff
-- 
   Geoff Read <g.read from niwa.co.nz>
    http://www.annelida.net/
    http://www.niwascience.co.nz/ncabb/




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