Glossodoris atromarginata from Vietnam

July 11, 2006
From: Mike Krampf

He is another pic from Vietnam. It looks similar to Glossodoris atromarginata but the gills and rhinopores are not black so I was sure.

Locality: Three Kings dive site off Whale Island, 50 Ft, North of Nha Trang, Vietnam, South China Sea, 28 June 2006, Rock Pinnacle. Length: 4 cm. Photographer: Mike Krampf.

Thanks as always for your time and insight.

Mike

mtkrampf@yahoo.com

Krampf, M., 2006 (Jul 11) Glossodoris atromarginata from Vietnam. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17105

Dear Mike,

This is G. atromarginata. The gills are usually just edged in black as in your photo. You'll notice in the close-up alongside that the gills seem to be near the front of the body, rather than at the back. That is becasue the front half of these animals seem to be burrowed in the substrate, which I suspect is a sponge which they are eating. It is a good illustration of how difficult it can be to get good feeding information  for many species. Although common, we have few records of this species feeding or even being associated with a sponge. As your photo shows, I suspect this is not because they are not found with their food sponge, but because their food sponge often doesn't look like a sponge at all.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Jul 11). Comment on Glossodoris atromarginata from Vietnam by Mike Krampf. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17105

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Glossodoris atromarginata

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