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Re, Polychaete Distribution

Geoffrey Read Geoffrey.Read at actrix.gen.nz
Thu Dec 14 20:17:13 EST 1995


JAMES BLAKE writes:-
> Angel de leon wrote:
> >   These study may explain the transpacific distribution in the recent 
> >past. The interesting point is, how many transpacific species Jim 
> >Blake found in his Atlas?.

> The answer to Angel's question, however, is easy if we are considering 
> introduced or non-indigenous species.  None!!

Aglaophamus verrilli (McIntosh, 1885), type locality Marlborough Sounds, 10
faths, New Zealand, is reported from 100-140m depth in the Basin by Brigitte
Hilbig in vol 4. (Other authors have reported it from USA before Brigitte I
should add.) It's quite a distinctive species, but perhaps this is misleading
(like Chaetopterus) and future workers with yet more advanced 'tools' will
manage to separate the Californian version again. However, other NZ marine
fauna have apparently reached West Coast USA across the Pacific (a nudibranch
was it recently?), and, as Jim indicates, the shallow water is the area where
intrusions are most likely. For what it's worth A. verrilli in NZ is a
near-shore species.  

Nephtyid experts please, -- the floor is yours to knock this one on the head
... 

Geoff
-- 
   Geoff Read <gread at actrix.gen.nz>
   Annelida resources =>  http://www.actrix.gen.nz/users/chaeto/index.html



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