Elysia crispata - egg coil

October 6, 2000
From: John Batson

Hi there,
I was wondering if anyone had any information on breeding nudibranchs in their aquarium. I have had a couple of Elysia crispata for a few weeks and last night one laid a coil of eggs on the front of my tank. Other than keeping my fish from eating the eggs, is there anything else I can do to help them along
Thanks,
John Batson

Jbatson_78722@yahoo.com

Batson, J., 2000 (Oct 6) Elysia crispata - egg coil. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3090

Dear John,
I'm pretty sure that the eggs of Elysia crispata develop into free-swimming veliger larvae which spend some time in the plankton, feeding on unicellular plants, before settling down onto their food algae and becoming a crawling slug.

The major problem with keeping larvae in aquaria is that they either get filtered out of the water, get stuck in the surface film, or starve through lack of phytoplankton in the water. Without quite substantial effort, I think your chances of successfully breeding lots of little E. crispata are pretty slight.

Your chances would increase if this was a species which produced non-feeding larvae which only spend a few hours or days in the plankton, but I don't think it is.

Best wishes,
Bill Rudman.

Rudman, W.B., 2000 (Oct 6). Comment on Elysia crispata - egg coil by John Batson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3090

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