Jorunna funebris on blue food sponge and eggs

February 18, 2009
From: Marcel Tanke

Concerning message #20664:

Dear Bill,
We found 6 Jorunna funebris. All quite large, up to about 12 cm and say 3 cm in diameter. In the upper picture, please note the small shrimp on its back and the feeding on the blue sponge.

In the bottom picture you can see it laying eggs. Several similar egg ribbons were in the same area.

Locality: Anilao, Secret Bay dive site, 10 meters, Philippines, 29 December 2008, 1 January 2009, sandy, flat bottom . Length: 12 cm. Photographer: Marcel Tanke.

Best regards,
Marcel

marceltanke@cs.com

Tanke, M.A., 2009 (Feb 18) Jorunna funebris on blue food sponge and eggs. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22161

Dear Marcel,

Thannks for these photos. I have included a couple of close-ups of your upper photo to show feeding damage to the sponge colony and the shrimp, which is Periclimenes imperator. We used to think this shrimp was a commensal living only on Hexabranchus sanguineus, but over recent years it has been found on a wide variety of large sea slugs.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Feb 18). Comment on Jorunna funebris on blue food sponge and eggs by Marcel Tanke. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22161

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