Chromodoris annulata & egg ribbon from Burma

March 27, 2003
From: Mary Jane Adams

Hi Bill,
Chromodoris annulata is fairly common in the Mergui Archipelago, Andaman Sea, Myanmar. One of the dive guides told me that most of them have yellow spots and two separate rings, but every few months they see a spotless one or one with a purple line connecting the rings.

On Feb. 14, 2003, I saw this one (Upper Right) laying eggs at 5 meters on a vertical wall at Three Islets. Unfortunately, I was out of film.

When I went back to photograph it on my next dive, the slug had finished the egg ribbon (Lower Right) and was crawling around near by so I photographed them separately. The depth was 5 meters.

The Lower Left Image shows that the underside of the anterior mantle is deep purple. Perhaps this indicates some kinship with Chromodoris hintuanensis and C. geometrica?

Best regards,
Mary Jane

divepng@yahoo.com

Adams, M.J., 2003 (Mar 27) Chromodoris annulata & egg ribbon from Burma. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9462

Dear Mary Jane,
Thanks for both for the egg mass photo and the photo of the purple mantle underside. I thought I had listed somewhere all the species with a purple underside to the anterior mantle. It occurs in a group of species with a very broad mantle overlap. Perhaps they do represent an inter-related group of species within the genus. I can think offhand of the following species with this purple underside to the anterior mantle. If anyone can think of any more it would be nice to have a complete list.
Chromodoris annulata
Chromodoris coi
Chromodoris conchyliolata
Chromodoris geometrica
Chromodoris gleniei
Chromodoris hintuanensis
Chromodoris leopardus

Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Mar 27). Comment on Chromodoris annulata & egg ribbon from Burma by Mary Jane Adams. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9462

Factsheet

Chromodoris annulata

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