Cyerce sp. 3
Recorded here from Japan, but I have also seen it in parts of the southwestern Pacific so it may have quite a wide distribution.
Hachijo Island, Japan, 6m, 3 March, 2002. Length 20mm. Photo: Nishina MasayoshiAuthorship details
Rudman, W.B., 2002 (March 20) Cyerce sp. 3 [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/cyersp3
February 7, 2008
From: Hugues Flodrops
Concerning message #6377:
Dear Bill and Nishina,
I found this Cyerce named Cyerce sp.3 on the forum. It looks very similar to Nishina's picture. It's the first observation at Indian Ocean. It confirms your suggestion of a wide distribution.
Locality: Etang-Salé, 1 metre, Reunion Island, Indian Ocean, 30 January 2008, Gula cyclone. Length: 12-14 mm. Photographer: Hugues Flodrops.
firstname.lastname@example.orgFlodrops, H., 2008 (Feb 7) First record of Cyerce sp.3 from Reunion Id.. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21350
Thanks for the record. I have included a 'close-up' to show the tubercles on the inflated cerata.
April 4, 2002
From: Cory Pittman
I thought you might like a photo to extend the range of Cyerce sp. 3 to Hawaii. However, Pauline Fiene-Severns found the first specimens during our current project and Scott Johnson found it several years before she did. So, I can't claim a new record. The animal in the photo was taken in an algae wash at Hekili Point, Maui on September 20, 1998. It was found in a semi-protected, back-reef habitat at a depth of less than 1 m (although most of our specimens are from somewhat more exposed sites and at depths of up to 9 m). It was 6mm in length.
Of interest, perhaps, is that it has a swimming escape behavior. When disturbed, it arches its body ventrally until the head and the tip of the foot nearly touch. In that posture, the cerata are "splayed out" into a circular position and partially contracted at their bases. Then, it swims up into the water column by rhythmically sweeping the cerata up and down creating a pulsing effect reminiscent of a medusa (without, otherwise, moving its body). If I recall correctly, I've observed them swimming continuously for up to 20 or 30 seconds in dishes. Unfortunately, I haven't managed to photograph one "in action".
email@example.comPittman, C., 2002 (Apr 4) Cyerce sp. 3 from Hawaii. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6627
It certainly has that 'slight difference' many Hawaiian species seem to have, but the yellow spots around the ceratal edge, though smaller, suggest it is the same.
March 22, 2002
From: Nishina Masayoshi
I think this belongs to the genus Cyerce but I have no idea of its name. This species is sometimes found in Hachijo Island.
Date: 3 March, 2002
Location: Hachijo Island, Japan
Masayoshi, N., 2002 (Mar 22) Cyerce sp.? from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6377
As far as I know this species is unnamed. I have also seen it in parts of the southwestern Pacific so it may have quite a wide distribution.