Chromodoris strigata feeding

July 22, 1999
From: Neil Miller

Hi Bill,

Here is the other photo that you were interested in from my website for Scuba Divers at http://www.diveoz.com.au. Again I'm sorry I can't give you any collection details.

Neil Miller

webguy@diveoz.com.au

Miller, N., 1999 (Jul 22) Chromodoris strigata feeding. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1086

Dear Neil,
This photo of three Chromodoris strigata is particularly interesting because it is the first indication of what this species feeds on. I am pretty sure that these three animals have just about completely eaten a sponge colony. See the light purple or lilac coloured sponge in the bottom right of your photo. That is all that is left of a colony which seems to have extended over the bottom half of the rock they are sitting on.

It looks to be a species of Dysidea [Dysideidae; Dictyoceratida], a sponge genus commonly fed on by chromodorids, who tend to choose sponges without hard siliceous or calcareous spicules. Knowing the food of individual species can be a useful clue to whether two similarly looking 'species' are in fact the same or different.

Bill Rudman.

Rudman, W.B., 1999 (Jul 22). Comment on Chromodoris strigata feeding by Neil Miller. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1086

Factsheet

Chromodoris strigata

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