Mating in Gymnodoris ceylonica

September 15, 1999
From: Scott Johnson

Hi Bill,

To make up for my lack of photos of the Gymnodoris ceylonica egg mass, here are 3 photos of the 'egg production process'. The pictures are, I think, self-explanatory.

Scott

johnson@kmr.ll.mit.edu

Johnson, S., 1999 (Sep 15) Mating in Gymnodoris ceylonica. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1336

Dear Scott,
Thanks for the great photos. I sometimes wonder whether all nudibranch matings are in fact reciprocal. In this instance (LOWER RIGHT) it seems that the lower animal is acting as a male and the upper as a female.

Another interesting feature are the fused rhinophores (UPPER RIGHT) in one of the slugs. I can't say this is common anywhere in the Nudibranchia, but this is the third species of Gymnodoris in which I have seen fused rhinophores.
Bill Rudman.

Rudman, W.B., 1999 (Sep 15). Comment on Mating in Gymnodoris ceylonica by Scott Johnson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1336

Factsheet

Gymnodoris ceylonica

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