Elysia ornata from Japan

August 19, 2001
From: Nishina Masayoshi


Dear Dr.Rudman,

Elysia ornata is common in Sagami Bay and at Hachijo.

Date: 29 June, 2001
Place: Sokodo Hachijo Island, Japan
Depth: 4m
Size: 30mm

Best Regards,
Nishina Masayoshi

nishina@hpe15.wips.co.jp

Nishina, M., 2001 (Aug 19) Elysia ornata from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4957

Dear Nishina,
Thanks for these photos. The lower one is interesting because it shows the milky white defensive secretions E. ornata exudes when irritated - which can a nuisance if you are trying to photograph it. The white specks in its colour pattern are in fact glands. Many opisthobranchs have
defensive skin glands and we are still learning out how the secretions are produced. In some groups, such as the Chromodorididae the molecules are almost certainly modified from molecules obtained from their sponge food. In the case of the sacoglossans it is also likely that defensive plant poisons are being re-cycled by the sacoglossans. Have a look at my message on research that has been done on the secretions of Elysiella pusilla
Best wishes,
Bill Rudman.

Rudman, W.B., 2001 (Aug 19). Comment on Elysia ornata from Japan by Nishina Masayoshi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4957

Factsheet

Elysia ornata

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