Movement in Chromodoris cf. geminus

December 2, 1999
From: Valda Fraser

Dear Bill
You asked me to take note as regards how Chromodoris cf. geminus moves. Hopefully this photo provides visual illustration. I don't see that "the mantle edge is raised and lowered in one movement"... It just seems to "pleat" irregularly?! I have good video footage, but getting it to you is a problem.

Locality: South Coast KwaZulu-Natal, SOUTH AFRICA. Scottburgh - rocky reef - 24m., November 1999. Size: 75mm

Regards
Valda Fraser

iti04937@mweb.co.za

Fraser, V., 1999 (Dec 2) Movement in Chromodoris cf. geminus. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1595

Dear Valda,
It certainly looks like your animal is a different species. As I said earlier, C. geminus, has a very distinctive way of flapping the edge of the mantle so that the whole of the edge rises simultaneously then is lowered, then rises etc etc, in a spectacular rhythmic display. Your animal seems to be sending an irregular 'ripple' down each side of the mantle in a fairly normal chromodorid movement. I have moved this species to a separate page and for convenience will call it Chromodoris cf. geminus, the 'cf' being our shorthand for 'refer to'.

Thanks for the information,
Bill Rudman.

Rudman, W.B., 1999 (Dec 2). Comment on Movement in Chromodoris cf. geminus by Valda Fraser. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1595

Factsheet

Chromodoris cf. geminus

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