Risbecia pulchella from the Andaman Sea

April 8, 2003
From: Mary Jane Adams


Hi Bill,
I saw lots of Risbecia pulchella during my recent dive trip to the Andaman Sea. Many of them were exhibiting trailing behavior. They seem to be more common than R. tryoni in this area. The attached images are from Black Rock, Mergui Archipelago, Myanmar. The slug with the single rhinophore was photographed at 5 meters on Feb. 15, 2003.

This anomaly seems to be a fairly common in otherwise healthy-looking nudibranchs. I guess it isn't much of a handicap. I photographed middle and lower images at the same divesite on Feb. 26, 2003. The pair are engaged in mating behavior. I think the one standing on its tiptoes is just sniffing around.

Best regards,
Mary Jane

divepng@yahoo.com

Adams, M.J., 2003 (Apr 8) Risbecia pulchella from the Andaman Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9480

Thanks Mary Jane,
The one in the photo alongside shows the gill branching that Gohar & Aboul-Ela describe for this species [see my message].
Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Apr 8). Comment on Risbecia pulchella from the Andaman Sea by Mary Jane Adams. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9480

Factsheet

Risbecia pulchella

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