Hypselodoris tricolor feeding

September 4, 2009
From: Antoni López-Arenas i Cama


Concerning message #16919:

Hi Bill,

Here comes a pair of photos of Hypselodoris tricolor feeding on a pink sponge Dysidea avara as you asked.

Locality: La depuradora, l'Escala, Costa Brava., 22 metres, Spain, Mediterranean, 30 May 2009, Pre-coraligen. Length: 10 - 20 mm. Photographer: Antoni López-Arenas i Cama.

Glad to participate
Antoni

http://bitxosdelmediterrani.blogspot.com
http://www.flickr.com/photos/alopezarenas/sets/72157603891082971/

alopezarenas@gmail.com

López-Arenas, A., 2009 (Sep 4) Hypselodoris tricolor feeding. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22641

Dear Antoni,

Thanks again. As I said in your message of H. fontandraui feeding [message #22640], I suspect the white sponge in that message and the pink one in this message may be two different species of Dysidea. I a not an expert on sponges, but I would agree that this pink one is 'typical' of D. avara.  Your photo has a remarkable similarity to ones in Baki Yokes' earlier message from Turkey [#5338 ].

Species of Hypselodoris usually feed on species of the sponge family Dysideidae, but there was one Mediterranean species, Hypselodoris orsinii, which fed exclusively on thorectid sponges of the genera Cacospongia and Scalarispongia. Earlier records on the Forum  [#22390] show that H. tricolor is unique in feeding on both thorectid and dysideid sponges. It is good to get more records confirming that they really do feed on both.

I look forward to further interesting photos in the future

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Sep 4). Comment on Hypselodoris tricolor feeding by Antoni López-Arenas i Cama. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22641

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Hypselodoris tricolor

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