Hypselodoris sp. 9
Order: NUDIBRANCHIA
Suborder: DORIDINA
Superfamily: EUDORIDOIDEA
Family: Chromodorididae
PHOTO
Locality: Noumea, 10 m, New Caledonia, Pacific Ocean, July 2006. Length: 15 mm. Photographer: Jean-François Hervé.
Authorship detailsRudman, W.B., 2006 (August 30) Hypselodoris sp. 9 [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/hypssp9
Related messages
Re: Hypselodoris from New Caledonia
January 12, 2007
From: Bill Rudman
Concerning message #17621:
Just a bit of house-keeping. I over-confidently identified the sponge this animal is on as a dysideid, probably Euryspongia. I have just asked Pat Bergquist to check this identification for me and it is the darwinellid Chelonaplysilla violacea. At present only species of Chromodoris are known to feed on this sponge, so there is the possibility it is not a species of Hypselodoris.
Best wishes
Bill Rudman
Re: Hypselodoris sp. 9 - eggs?
September 1, 2006
From: Nerida Wilson
Concerning message #17623:
Dear Bill and others,
I seriously doubt this egg mass belongs to Hypselodoris sp 9, as the close up picture reveals blotchy orange patches, a sure sign of extra-capsular yolk, and a feature which to date has only been recorded from Chromodoris and Cadlinella
kind regards
Nerida
wilsong@auburn.edu
Wilson, N.G., 2006 (Sep 1) Re: Hypselodoris sp. 9 - eggs?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17698Dear Nerida,
I put the close-up in because I wasn't sure if the blotchiness was extracapsular yolk or not, but on reflection it certainly seems to be. Which as you say, suggests it is probably not an egg mass of a species of Hypselodoris. I guess it's possible that Hypselodoris sp. 9 is not a species of Hypselodoris, but its general shape and food sponge suggest it is much more likely to be a species of Hypselodoris than a Chromodoris..
Best wishes,
Bill Rudman
Hypselodoris sp. 9 - eggs?
August 31, 2006
From: Jean-François Hervé
Dear Dr Rudman,
Thank you for your answer #17621.
Here is a photo of an egg ribbon I found close by Hypselodoris sp. 9. Can belong to the nudibranch?
Locality: Noumea, 10 m, New Caledonia, Pacific Ocean, July 2006. Length: 15 mm. Photographer: Jean-François Hervé.
Thank You very much.
Jean-François Hervé
http://jfherve.free.fr/nudibranches/
jfherve@free.fr
Hervé, J-F, 2006 (Aug 31) Hypselodoris sp. 9 - eggs?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17623
Dear Jean-François,
Although it's not possible to be 100% sure, it certainly looks as though it could be this species' egg ribbon
Best wishes,
Bill Rudman
Hypselodoris from New Caledonia
August 30, 2006
From: Jean-François Hervé
Dear Dr Rudman,
Thank you for your fast answer #17400.
I found this very pretty nudibranch for the first time, last month. It was probably feeding on the purple sponge. 10 m depth.
Locality: Noumea, 10 m, New Caledonia, Pacific Ocean, July 2006. Length: 15 mm. Photographer: Jean-François Hervé.
I'm having difficulty with his id. Please, can you help me?
Thank You very much.
Jean-François Hervé
http://jfherve.free.fr/nudibranches/
jfherve@free.fr
Dear Jean-François,
Thanks for this interesting observation. Firstly, I am pretty sure this is an unnamed species of Hypselodoris. I don't recognise and I have been through all of Jean Risbec's descriptions and illustrations of New Caledonian nudibranchs and can't find anything even slightly similar. I'll call it Hypselodoris sp. 9 on the Forum
The other point of interest is the purple sponge you found it on. It is a dysideid, almost certainly a species of Euryspongia. It's not often that we have an instant start on the biology of a new species. I am also pretty sure that the orange mass in the top right corner of your photo is a species of Rostanga. Have you any other photos of it please?
Best wishes,
Bill Rudman
