Flabellina rubrolineata feeding
April 11, 2001
From: Erik Schloegl
Dear Bill,
You've mentioned several times that you're interested in images of nudibranchs feeding. I think these two photos qualify. They were both taken on 2 April, 1999, at Fly Point, Port Stephens, New South Wales [Australia]. The depth was 8m.
Best wishes,
Erik
Erik.Schlogl@uts.edu.au
Schloegl, E., 2001 (Apr 11) Flabellina rubrolineata feeding. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4152
Thanks Erik,
To those of you who don't know what a hydroid colony looks like, the plant-like stucture the Flabellina are crawling over is in fact a colony of animals. In the bottom right photo you can see small sea-anemone like animals, each with a ring of tentacles around their mouth. These are the 'individual' hydroid animals, or 'polyps', which are eaten by Flabellina. Although a few aeolid species seem to eat a wide variety of hydroids, most are very specific, eating only one or a very few species. It is therefore useful to build up information on the food of nudibranchs. Apart from just being of interest, it might give us some clues to relationships between species.
Unfortunately it is when you try and get food items identified that you find that it is not only nudibranch taxonomists we are short of. So in most cases I photograph the food item and preserve it so that hopefully, some time in the future, I will find someone who is able to identify it. So any little bit of information, like Erik's photos, is welcome
Best wishes,
Bill Rudman
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