Re: Ceratosoma ingozi from South Africa

July 3, 2006
From: Georgina Jones

Concerning message #17026:

Hello again,
Thanks for your speedy reply!
As to why I think this is the egg ribbon of C. ingozi, well, only because we saw them close together, which I realise doesn't constitute definite proof. The egg ribbon pictured alone (which was probably reversed in scanning) was not close to any nudibranchs, but when we saw how much it looked like the picture where the nudi is with the egg ribbon we decided it was the same thing. Not good enough for certainty?
With respect to the mantle glands, I have attached two photos which show some details of same, especially of the anterior mantle. I also attach a photo showing colour variation in this species. It is a lovely creature.

Locality: Partridge Point, Cape Town, 18-20m, Western Cape, South Africa, False Bay, August 2005, rocky reef. Length: 70-100mm. Photographer: Sharon Albert.

Best wishes
Georgina

gjones@icon.co.za

Jones, G.J., 2006 (Jul 3) Re: Ceratosoma ingozi from South Africa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17035

Thanks Georgina,
I agree the two egg masses [if we reverse the spirality of the solitary one] are from the same species, but proximity is not conclusive evidence of 'ownership' unfortunately. Nudibranchs - except for a very few possible cases of brooding - are not very caring of their eggs. So a nudibranch by an egg ribbon can just mean its passing by. If you can catch one of these animals feeding on a sponge, I would love to know about it

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Jul 3). Comment on Re: Ceratosoma ingozi from South Africa by Georgina Jones. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17035

Factsheet

Ceratosoma ingozi

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