[Annelida] New symbiotic scale-worm

Daniel Martin Sintes via annelida%40net.bio.net (by dani from ceab.csic.es)
Wed Jan 5 02:45:15 EST 2011

Dear colleagues, our more recent paper is already available online at 
the Helgolander Mar. Res. site:


The paper is entitled:

Di Camillo C.J., Martin D. and Britayev T.A. (2010) Symbiotic 
association between Solanderia secunda (Cnidaria, Hydrozoa, 
Solanderiidae) and Medioantenna variopinta sp. nov. (Annelida, 
Polychaeta, Polynoidae) from North Sulawesi (Indonesia). Helgoland 
Marine Research, DOI 10.1007/s10152-010-0239-7

A mimic scale-worm was found associated with the athecate hydroid 
Solanderia secunda, commonly found on reefs of the NW coast of North 
Sulawesi, Indonesia. The species resembled Medioantenna clavata Imajima, 
1997, which was originally described without any reference to a 
symbiotic mode of life and later reported to be living on a solanderiid 
hydroid both in Japanese waters. A detailed morphological analysis led 
us to consider the Indonesian specimens as a new species, con-generic 
with the Japanese species, namely Medioantenna variopinta sp. nov. The 
new species differs from the type material of M. clavata as it has 
elytra with one prominent finger-like papilla and all neurochaetae with 
unidentate tip, instead of an elytral lump and both unidentate and 
bidentate neurochaetae on segment two. In turn, the Japanese worms 
associated to Solanderia are here referred to our new species. Two 
morphological features in M. variopinta sp. nov. are rather unusual 
among scale-worms. One of them is its extremely high level of bilateral 
asymmetry and antero-posterior variability in elytral distribution and 
the other one is its elongated, upwards directed nephridial papillae. 
The morphology and geographical distribution of the host together with 
the known characteristics of the symbiotic association have also been 

Fore those non-having access to the journal, I may send you the PDF upon 

My best wishes for the recently started 2011.


Dr. Daniel Martin

Scientific Researcher
Consejo Superior de Investigaciones Cientificas (CSIC)

Centre d'Estudis Avancats de Blanes (CEAB)

->  Carrer d'acces a la Cala Sant Francesc 14
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->  WWW Personal:      http://www.ceab.csic.es/~dani/

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