Chromodoris willani - feeding (3)

April 8, 2006
From: Guido & Philippe Poppe

Dear Bill

Here are some photos of Chromodoris willani which you may find interesting from our website on Philippines marine life at
http://www.poppe-images.com/.

Upper & middle left photo: Didgo Island, Quatro Islands, NE Cebu, Philippines. 30 m. 2005. Middle right & lower right photo:  Hilutungan Island, Cebu, Philippines.20 m. 2005. Photos: Copyright Guido & Philippe Poppe.

Best wishes,
Guido & Philippe Poppe

philippe@conchology.be

Poppe, G. & Poppe, P., 2006 (Apr 8) Chromodoris willani - feeding (3). [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16271

Dear Guido & Philippe,
This is the third message [see #16257, #16270] dealing with your photos of C. willani which I have used to illustrate some of the [problems with building up feeding information on sponge-feeding dorids. In this message I have included examples of two extremes of body sahpe ina species of Semitaspongia which I discussed in the last message [#16270], the upper one is smooth with large oscules [siphons], and the lower one has very prominent bundles of fibres - which form the sole skeletal material in these sponges - protruding from the surface of the sponge body.

The upper sponge also shows how large sponge colonies can become overgrown with all sorts of plant and animal growths so that sometimes, as illustrated in message 1 [#16257], it is difficult to know there is a sponge present. That is why in many photos on the Forum, where there is an aggregation of one species of chromodorid, I am pretty sure there is a sponge underlying the growths we can see in the photo. Unfortunately it doesn't help to identify which sponge they are eating.

Thanks Guido & Philippe for this very educational group of photos.
Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Apr 8). Comment on Chromodoris willani - feeding (3) by Guido & Philippe Poppe. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16271

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