[Cnidaria] nematocyst envenomation

[Dr. Angel Yanagihara]

Hello Patrick,

Are you looking for an image of a nematocyst recovered from a nudibranch?
 My research program focuses upon  nematocyst
ultrastructure and mechanisms of envenomation pathophysiology. I
have an extensive collection of nematocyst images by light, scanning 
and transmission electron microscopy. None of these are
nematocysts recovered from nudibranchs but these do represent clinically
relevant nematocyst types. 

Aloha,
Angel

************************************************
Dr. Angel A. Yanagihara, Principal Investigator  
Cnidaria Research Laboratory                    
Pacific Biomedical Research Center              
University of Hawaii                              
Honolulu, HI 96822   USA                         
Phone 808-956-8328                                      
Fax 808-956-6984                                         
************************************************

On Mon, 23 Jun 2008, Claudia Mills wrote:

> Hello Patrick,
> 
> Your interest is out of my area of expertise, but your message went  
> out to the entire listserver,
> so maybe someone else out there will provide you with an answer.
> 
> Claudia Mills
> 
> 
> On Jun 23, 2008, at 6:18 AM, ottuso at comcast.net wrote:
> 
> > Hi Claudia. I am a dermatologist in Vero Beach Fla. with an interest  
> > in marine dermatology/envenomations. I was wondering if you could  
> > direct me to a reference regarding identification of nematocyst  
> > speciation. I am not a marine biologist but do lecture to other  
> > physicians re. aquatic dermatology. I am also writing an article for  
> > a dermatology publication re. indirect nematocyst envenomation  
> > through nudibranchs and would appreciate any photo you may have of  
> > such--it would be used in the publication with a reference/credit to  
> > you. Thanks for your time.--Patrick Ottuso, M.D.
> >
> > -------------- Original message --------------
> > From: Claudia Mills <cemills at u.washington.edu>
> >
> > > Hi Rob,
> > >
> > > It does seem to be a Leuckartiara or a Neoturris. I've found a  
> > number
> > > of Pandeids on cruises that don't correspond well to described
> > > species. You didn't give a size, but I am assuming 20-35 mm tall.  
> > It's
> > > not a Zanclonia, which would have distinctive tentacles with a  
> > series
> > > of adaxial nematocyst filaments, which you would have noticed. Check
> > > the gonads to place in Leuckartiara (folds only) or Neoturris (folds
> > > and pits) -- both genera have mesenteries between gonads and radial
> > > canals, which yours has. You should check Larson's Southern Ocean
> > > monograph.
> > >
> > > Larson and Harbison described (1990) Leuckartiara brownei from  
> > McMurdo
> > > Sound, with 4 large perradial t! entacle s and 28 small ones  
> > between - it
> > > isn't that. Neoturris pileata has a north Atlantic and Med
> > > distribution - my biogeographic sense says that it is very  
> > unlikely to
> > > be near Antarctica. N. breviconis (which G. Mackie has been  
> > looking at
> > > up close in the last several weeks has lots of tentacles, but no
> > > evidence of those exaggerated diverticulae off the radial canals and
> > > no southern Ocean references at all.
> > >
> > > In my new Light's manual key, I divide things related to this as  
> > with
> > > more, or less than 60 tentacles. There are very few choices with  
> > more
> > > (L. breviconis and some huge (8 cm tall) colorless pandeid from
> > > offshore surface California waters).
> > >
> > > There might be some "new" Antarctic or Southern Ocean things  
> > described
> > > that I missed in my hour of intermittent Friday night Google Scholar
> > > explorations from home.
> > >
> > > Claudia
> > > _________! _______ _______________________________
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