Re: Chromodoris annulata from Red Sea & Persian Gulf

September 18, 2008
From: William Messruther

Concerning message #3267:

A photo of Chromodoris annulata.

Locality: Khor Fakan, 18 meters, UAE, Indian Ocean, 13th September 2008, Inchcape 2 Wreck. Length: 20 cm. Photographer: William R Messruther.

William R Messruther

willnita@eim.ae

Messruther, W.R., 2008 (Sep 18) Re: Chromodoris annulata from Red Sea & Persian Gulf. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21891

Dear Will,
Thanks for another interesting photo. I have included a close-up alongside which shows dark blue 'lumps' which are parts of a large, partly overgrown, sponge colony. I suspect the sponge is Chelonaplysilla violacea. I have been trying to get some good observations showing what Chromodoris annulata feeds on, and in an earlier message [#21749] we had it feeding on this sponge. Although we can't actually see the head end in your photo, I wouldn't be surprised if your C. annulata was feeding on this colony. Although not direct evidence, the accumulation of similar photos showing an association between this sponge and this chromodorid, is a useful indication.

Best wishes,
Bill Rudman

Rudman, W.B., 2008 (Sep 18). Comment on Re: Chromodoris annulata from Red Sea & Persian Gulf by William Messruther. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21891

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