Mating in Gymnodoris ceylonica
September 15, 1999
From: Scott Johnson
![](/images/sje114-7.jpg)
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
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.
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