Aplysia parvula laying eggs
May 26, 2005
From: Dong Bum Koh
Dear Bill,
Here are some photos of what I think is Aplysia parvula with its mating and eggs for the Sea Slug Forum.
Locality: Hwa Soon, Jeju Id, Sth Korea. Depth: 4 m. Length: 20 mm. 18 May 2004. Rocky bottom. Photographer: Sang Yual Shin
Best regards,
Dong Bum Koh
drkoh@seasee.co.kr
D. B. Koh, 2005 (May 26) Aplysia parvula laying eggs. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13800Dear Koh,
Thanks for these photos which I agree are of Aplysia parvula. I have included a close-up here of part of the upper photo, as it shows the inside of the parapodial cavity of a Sea Hare very well. The black ring, with whitish rays radiating out from it, is the edge of a hole [foramen] in the mantle, which exposes part of the shell, which lies embedded in the mantle tissue. We can see part of the brown shell quite clearly. Aplysia parvula is one of a few species with a large hole like this. In most species there is only a tiny pore, sometimes on a small papilla. Directly below the foramen, in the photo, we can see a tube or funnel, which is the exhalent siphon which directs water out of the mantle cavity. The mantle cavity is directly below the shell, so we can't actually see it. In it sits the gill and the reproductive openings.
Best wishes,
Bill Rudman
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