Nembrotha kubaryana feeding in the Philippines

April 17, 2007
From: Mike Krampf


Here is another picture of a Nembrotha kubaryana feeding on an ascidian. There was a Nembrotha convention being held in this area of the reef. There were about a dozen N. kubaryana, a dozen N. cristata and one N. milleri in the area. The ascidian shown was very abundant in the area and while I didn't see either the N. cristata or N. milleri actually feeding they were all situated on or very near the same ascidian.

Locality: Dive Site - Sinandigan Wall, 30 ft, Puerto Galera, Philippines, South China Sea, 22 Feb 2007, Reef. Length: 4-6 cm. Photographer: Mike Krampf.

Cheers,
Mike

mtkrampf@yahoo.com

Krampf, M., 2007 (Apr 17) Nembrotha kubaryana feeding in the Philippines. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19564

Dear Mike,
Thanks for this interesting observation. Some years ago Prof. Valerie Paul and associates reported on Nembrotha cristata and N. kubaryana feeding on the ascidian Atapozoa sp. Both species removed antifeedant compounds from the ascidian and stored them in their own bodies, exudung them in a slimy mucus when disturbed for their own defence.

I have tentatively identified this ascidian as Sigillina signifera but it is possible I am wrong or that Atapozoa is another name for Sigillina. I need to find an ascidian expert.

  • Paul, V.J., Lindquist, N., Fe n i c a l, W. (1990) Chemical defenses of the tropical ascidian Atapozoa sp. and its nudibranch predators Nembrotha spp. Marine Ecology Progress Series, 59: 109-118

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Apr 17). Comment on Nembrotha kubaryana feeding in the Philippines by Mike Krampf. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19564

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