Re: Spurilla neapolitana from Gulf of Mexico [4]

August 25, 2005
From: Brian Plankis

Bill,
Thanks for the reply about the possible non-feeding stage [message #14595]. I don't give up hope easily so I'm going to be trying to raise these for at least a few months. I read Dr Calfo's article on raising of Berghia (now Aeolidiella stephanieae) and did not see any info on when it would be safe to do water changes on the newly hatched eggs buckets.

Will the newly hatched larvae settle to the bottom and side of the bucket within a few days or do I need to wait longer to do a water change?

Both of my adults are now laying eggs with the smaller nudibranch producing an egg mass 1/3 the size of the larger nudibranch. I'm up to a total of 10 egg masses now of which 5 have hatched.

I keep live phtyo for my main tank, would some of this aid the newly hatched nudibranches if they actually do feed in the planktonic stage, or do I need a specific phyto species?

B.

garagebrian@yahoo.com

Plankis, B., 2005 (Aug 25) Re: Spurilla neapolitana from Gulf of Mexico [4]. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14625

Dear Brian,
I don't know Dr Calfo's publication but the two on the 'Berghia verrucicornis' in aquaria page both give fairly full directions which should work if your animal has a non-feeding veliger stage. If your animal has an algal feeding stage then it is all much more complicated. There is a good article on culturing larval sea hares [see message #3191] which discusses suitable phytoplankton but its possible what you have might work.

I'm afraid I have no personal experience at keeping planktotrophic larvae alive - I us to give up when they got stuck in the surface film on day 1 or 2 so all I can really do is hope your animals have non-feeding larvae, and if not, wish you luck.

Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Aug 25). Comment on Re: Spurilla neapolitana from Gulf of Mexico [4] by Brian Plankis. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14625

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Spurilla neapolitana

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