[Cnidaria] Antarctic Pandaeid?

[Dhugal Lindsay]

Aha! My Zanclonia was missing the distal portion of all its  
tentacles!! Thanks Claudia from pointing out that there are stalked  
nematocyst knobs. Although I haven't actually seen them myself they  
are figured prominently in the original picture. They may have a  
tendency to stick to the mesh and be torn off so I guess one should  
look carefully for signs of where they once were?!

Dhugal

-------------------------------------------
Dhugal Lindsay

Research Scientist at Japan Agency for Marine-Earth Science and  
Technology (JAMSTEC)
Adjunct Associate Professor at Yokohama City University
Adjunct Senior Lecturer at University of Queensland
Adjunct Lecturer at Nagasaki University

2-15 Natsushima-cho,
Yokosuka, Kanagawa,
JAPAN. 237-0061.
phone 81-46-867-9563
fax 81-46-867-9525
dhugal at jamstec.go.jp





On 23/06/2008, at 5:12 PM, Claudia Mills wrote:

> Hey Dhugal,
>
> I've never seen Zanclonia weldoni, but Kramp 1961 says for the  
> (entire) genus description (p. 116):
>
> "Pandeidae with long, transversal diverticula on both sides of the  
> four radial canals; with several tentacles provided with numerous  
> stalked nematocyst knobs on their adaxial side."
>
> The species description in Kramp 1961, p. 117, ends: "About 24  
> tentacles, each with an adaxial series of filaments with nematocysts".
>
> That sounds pretty distinctive. I don't have any of the original  
> illustrations here at home (and it's 1 am), but they aren't talking  
> about Zanclea.
>
> Claudia
>
>
> On Jun 22, 2008, at 5:02 PM, Dhugal Lindsay wrote:
>
>> G'day Kev,
>>
>> This is most definitely Zanclonia weldoni. The branching pattern  
>> of/diverticulae exiting from the radial canals is quite  
>> indicative. It is not to be confused with Zanclea, the genus name  
>> sounds similar, which has stalked knobs on the tentacles and is  
>> not a Pandeid. Zanclonia looks more yellow under regular  
>> microscope lights but I checked my still photos from a recent  
>> cruise and they are of the same orangish colour. I was only able  
>> to collect one so CMarz has only one barcode so far. If you can  
>> pop some tissue from two more in ethanol and put the vials in the  
>> freezer while keeping the remainder of the animal as a formalin  
>> voucher (photos would be nice too) then we can get some idea of  
>> the intraspecies variation for barcoding.
>>
>> Cheers,
>>
>> Dhugal
>>
>> -------------------------------------------
>> Dhugal Lindsay
>>
>> Research Scientist at Japan Agency for Marine-Earth Science and  
>> Technology (JAMSTEC)
>> Adjunct Associate Professor at Yokohama City University
>> Adjunct Senior Lecturer at University of Queensland
>> Adjunct Lecturer at Nagasaki University
>>
>> 2-15 Natsushima-cho,
>> Yokosuka, Kanagawa,
>> JAPAN. 237-0061.
>> phone 81-46-867-9563
>> fax 81-46-867-9525
>> dhugal at jamstec.go.jp
>>
>>
>>
>>
>>
>> On 21/06/2008, at 8:05 AM, Kevin Raskoff wrote:
>>
>>> Message forwarded from Rob Sherlock, who is out on the ship.  Any  
>>> replies should go to the list serve AND to him on ship  
>>> [sherloro at nbp.usap.gov], but please make sure the email is very  
>>> small in size and contains no attachments (major size restrictions).
>>>
>>> Kevin
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> Kevin Raskoff, Ph.D.
>>> Biology Department
>>> Monterey Peninsula College
>>> 980 Fremont Street, Monterey, CA 93940
>>> (831) 646-4132
>>> Email:  kraskoff at mpc.edu
>>> Web:  www.mpcfaculty.net/kevin_raskoff
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> ________________________________________
>>> From: Rob Sherlock [sherloro at nbp.usap.gov]
>>> Sent: Sunday, June 15, 2008 12:47 PM
>>> To: Kevin Raskoff
>>> Subject: Pandaeid?
>>>
>>> Hi Kev,
>>>
>>> We've caught a few of these guys (S. Scotia Sea, betw 0 & 300m)  
>>> and I'm not
>>> sure who it is. Pretty sure it's a pandaeid, possibly Neoturris  
>>> pileata or
>>> Zanclonia weldoni but neither quite fits the description. They've  
>>> got 4
>>> slightly wide radial canals that are branched laterally and about 60
>>> marginal tentacles over all. The tentacles appear hollow, do not  
>>> occur in
>>> clusters and have a pronounced spur at the base. No ocelli that I  
>>> see
>>> unless maybe in that 'spur'. Dunno' if you've got any ideas but  
>>> I'd love to
>>> hear 'em! Feel free to pass on to Cnidaria listserv w/the caveat  
>>> that I've
>>> only got shipboard mail (read small, infrequent  
>>> messages).<Pandeid- 
>>> smDSC_0015.jpg>_______________________________________________
>>> List-Info: https://maillists.uci.edu/mailman/listinfo/cnidaria
>>
>> _______________________________________________
>> List-Info: https://maillists.uci.edu/mailman/listinfo/cnidaria
>

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