Hypselodoris fontandraui mating

September 3, 2009
From: Antoni López-Arenas i Cama

Concerning message #5523:

Dear Bill,

Here goes a pair of voyeur photos of Hypselodoris fontandraui mating.

Locality: Formigues islands, Costa Brava., 25 metres, Spain, Mediterranean, 15 August 2009, rocky wall. Length: 1 cm aprox. Photographer: Antoni Lopez-Arenas i Cama.

Regards,
Antoni Lopez-Arenas i Cama.

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

alopezarenas@gmail.com

López-Arenas, A., 2009 (Sep 3) Hypselodoris fontandraui mating. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22637

Dear Antoni,

Thanks for these photos. As you no doubt realise there still seem to be difficulties in distinguishing some of the blue species of Hypselodoris from each other, in your part of the world. Photos of mating pairs can be quite useful in determining colour pattern variability within species.

Another thing that greatly interested me in your photos was the sponge in the background which is clearly a species of Dysidea. As I am trying to build up a fuller picture of feeding specificity in this family, every new bit of information is valuable. Looking at you flickr pages I see a couple more sponge associations which would be nice to include on the Forum.

As I discuss in an earlier message [#16948] I am not sure if this whitish sponge is Dysidea avara which is usually a pinkish colour with a more compact fibrous network. Perhaps it is a form of D. fragilis? Whatever its identity, it is good to get confirmation that another species of Hypselodoris is feeding on a dysideid sponge.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Sep 3). Comment on Hypselodoris fontandraui mating by Antoni López-Arenas i Cama. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22637

Factsheet

Hypselodoris fontandraui

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