Nembrotha lineolata with spawn

July 5, 2001
From: Jim Anderson

Dear Dr. Rudman,
The enclosed was photographed at 'Angels Window' dive site on Lembeh, N. Sulawesi, Indonesia on 18 June 01 at a depth of 23 metres. It was approx 70mm long.
Kind regards,
Jim A

jander4454@aol.com

Anderson, J., 2001 (Jul 5) Nembrotha lineolata with spawn. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4740

Dear Jim,
Thanks for the beautiful, and interesting photo. I've included an enlarged view of some of the ribbon to show the tiny yellow eggs, suggesting that this species has free-swimming veliger larvae which feed in the plankton (planktotrophic).

When I first saw the photo I thought we had no evidence that this was the egg ribbon of Nembrotha lineolata. I could see an inner and an outer end to the ribbon suggesting that Nembrotha could just be crawling past. But then I noticed that just below the posterior tip of the tail there is a third end suggesting that this animal has just started to lay a second ribbon within the coils of the existing ribbon. Very unusual, but at least it identifies the egg ribbon as that of N. lineolata.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Jul 5). Comment on Nembrotha lineolata with spawn by Jim Anderson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4740

Factsheet

Nembrotha lineolata

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