Feeding in Chromodoris decora [2]

September 13, 2007
From: Scott Johnson


Hi Bill,

These three shots show Chromodoris decora in both Hawaii and the Marshalls on a jet black prey sponge.

Locality: various, 4-10m, Pacific, various. Length: 10-15mm. Upper photo: Kwajalein, Marshall Islands [e327-k12]; Middle photo:  from Oahu, Hawaii [h129-o05]; Lower photo:  Enewetak, Marshall Islands [e327-e06]. Photographer: Scott Johnson.

Scott Johnson

uwkwaj@yahoo.com

Johnson, S., 2007 (Sep 13) Feeding in Chromodoris decora [2]. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20700

Dear Scott,

This is interesting. Jet black sponges are not that common, but Pat Bergquist (1996) in a discussion on Chelonaplysilla mentions that there are least two unnamed species including a 'purple-black' one, known only from a single specimen from Hawaii, which she has examined. I will of course need to check with her, but since in your other messages most of the sponges eaten by C. decora seem to be species of Chelonaplysilla, I wouldn't be at all surprised if the records in this message are of that undescribed species of Chelonaplysilla.

Interestingly, an earlier message of yours [#12230] reports C. fidelis feeding on this sponge as well.

  • Bergquist, P.R. (1996) The marine Fauna of New Zealand: Porifera: Demospongiae Part 5. Dendroceratidae and Halisarcida. New Zealand Oceanographic Institute Memoir, 107: 1-53.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Sep 13). Comment on Feeding in Chromodoris decora [2] by Scott Johnson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20700

Factsheet

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