Ceratosoma amoena - feeding aggregation
April 26, 2007
From: Dr J Floor Anthoni
Dear Bill,
To help with your investigation into feeding, here are some photos of Ceratosoma amoena from northern New Zealand on sponges.
Locality: Paua Wharf, Parengarenga Harbour, Northland, New Zealand. 2 Jan 2004. Photographer: Floor Anthoni
Best wishes,
Floor Anthoni
http://www.seafriends.org.nz/
floor[at]seafriends.org.nz
Dear Floor,
As I noted in your message concerning C. aureomarginata feeding [message #19840], I have been trying to confirm Michael C. Miller's record of this species and C. aureomarginata feeding on 'Dysidea fragilis' (see Miller, 1967). Up until now the only sponge I had records of C. amoena feeding on were of the thorectid genus Semitaspongia.
In both your photos in this message the Ceratosoma are showing a very definite interest in a species of Dysidea. Although we can see a pair mating in the top right corner of the upper photo, the rest of the animals seem to be much more interested in the sponge than they are in each other, which would suggest to me that they are feeding.
-
Miller, M. C. (1967) Grazing carnivores - some sea-slugs feeding on sedentary invertebrates. Poirieria (Conchology Section Auckland Institute & Museum), 3(1): 1-11.
Best wishes,
Bill Rudman
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