Juvenile Chromodoris annulata ?

October 20, 2005
From: Oren Lederman


Hi Bill,

Do you think this is a juvenile Chromodoris annulata?

Locality: Near the "Yetush" shipwreck, Eilat Bay, Israel. Red Sea. Depth: 25 meters. Length: ~0.5 cm. 09 October 2005. Coral head. Photographer: Oren Lederman

Oren Lederman

lederman@bigmail.co.il

Lederman, O., 2005 (Oct 20) Juvenile Chromodoris annulata ?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15058

Dear Oren,
It could well be, but there are Risbecia pulchella, R. ghardaqana which we shouldn't forget. Your photos are a good example of the different proportions we find in juveniles, with relatively very large rhinophores. It's one way we can make an intelligent guess as to whether a small chromodorid is a small adult or a small juvenile of a larger species.

Your photos reminded me of a relatively small C. annulata I found in Dar es Salaam. It was about 12 mm long and had most of its colour pattern, and its rhinophores had assumed their adult proportions. I have posted a photo here alongside my comments.

Photo: Entrance to harbour, Dar es Salaam, Tanzania, July 1974.  Approx 12 mm long alive. With adult Hypselodoris infucata. Photo: Bill Rudman.

Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Oct 20). Comment on Juvenile Chromodoris annulata ? by Oren Lederman. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15058

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