Jorunna cf. funebris from Sth Africa

August 7, 2001
From: Valda Fraser


Dear Bill,

It is such a thrill to swim over a spot you know so well and to see a new visitor. Can you tell me who this is?

Locality: Pumula, south coast KwaZulu-Natal, SOUTH AFRICA, 18m
Date: July 2001
Size: 20mm

Valda Fraser

valdafraser@mweb.co.za

Fraser, V., 2001 (Aug 7) Jorunna cf. funebris from Sth Africa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4860

Dear Valda,
If you ignore the way the brown forms a median band on the mantle I would have no hesitation in saying that this was Jorunna funebris. But since I can't ignore the brown band what is it? I still think it is probably Jorunna funebris but think you should put it on your list of things worth looking out for. The east coast of South Africa is similar to the southeast coast of Australia in having tropical species which venture down into the warm temperate waters. In southeastern Australia we sometimes get quite strange colour forms of tropical species which I am reluctant to name as distinct species without further evidence that they are represent genetically distinct populations rather than something affected by the environment. It is possible that your animals represent a similar phenomenon. There is no guarantee that we would find distinct anatomical differences between these animals and J. funebris is we dissected one, but differences in egg ribbon and food might be useful indications. You might also find a brown striped one cohabiting with a spotted one. So at this stage I'll just call it Jorunna cf. funebris and wait for more evidence from the coalface.
Best wishes,
Bill Rudman.

Rudman, W.B., 2001 (Aug 7). Comment on Jorunna cf. funebris from Sth Africa by Valda Fraser. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4860

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Jorunna funebris

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