[Annelida] French Guiana
(by chris.glasby from nt.gov.au)
Mon Jul 11 19:53:22 EST 2011
>Moreover, it seems that there is a trouble about Namanereis and >Namalycastis between the key proposed by Fauchald (1977) and that proposed >by Glasby (1999) (presence/absence of notosetae and the size of antennae). >Which is the right one ?
Personally I would follow the more up-to-date revisionary work over the older general work (even if the latter is a classic); whether it's right or not is another question ;-)
Seriously, the majority or namaneridids can be placed easily into either Namalycastis or Namanereis. The former are often larger bodied have 4 pairs of tentacular cirri, flattened leaf like dorsal cirri in middle and posterior parapodia and a few notochaetae. Namanereis usually have 3 pairs of tentacular cirri and dorsal cirri that are short - similar length to parapodial lobe - and the same shape (sub-conical) throughout, and usually lack notochaetae.
There are a few tricky species in your region that are currently placed into Namanereis (N. minuta and N. stocki), which have 'Namalycastis tendencies', e.g. 4 pairs of tentacular cirri, but in other respects (shape of dorsal cirri, jaws, pygidium and type of chaetae) they are typical of Namanereis. If you have one of those you may have to use both the Namalycastis and Namanereis keys in my revision to get an id.
Good luck - let me know if you have any problems.
From: annelida-bounces from oat.bio.indiana.edu [mailto:annelida-bounces from oat.bio.indiana.edu] On Behalf Of Jérôme Jourde
Sent: Monday, 11 July 2011 6:54 PM
To: annelida from magpie.bio.indiana.edu
Subject: [Annelida] French Guiana
I'm working on samples coming from French Guiana mud-flats and I have
big difficulties to find bibliographic references that deals with
taxonomy of the invertebrates of this area. Is there anybody who could
recommand me some references about polychaetes or, if possible, who
could send me some pdf papers ? I have essentially to do with the
Nereididae, Pilargiidae, and Capitellidae. I also found a Lumbrineridae
Abyssoninoe-like (with this particular sequence of modified setae on the
Moreover, it seems that there is a trouble about Namanereis and
Namalycastis between the key proposed by Fauchald (1977) and that
proposed by Glasby (1999) (presence/absence of notosetae and the size of
antennae). Which is the right one ?
Thank you for your help and many greatings from From France
Observatoire Faune-Flore des Pertuis Charentais (OBIONE)
Université de la Rochelle
Institut du Littoral et de l'Environnement
2 Rue Olympe de Gouges
17000 LA ROCHELLE
Tel: 05 46 50 76 26
Fax: 05 46 50 76 63
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