Re: Elysia diomedea breeding in home aquarium

June 7, 2006
From: Skip Pierce

Concerning message #16793:

Hi Bill,
I don't know anything about feeding in E. diomedea, but in answer to your comment about E. clarki and E. crispata. As juveniles, E. clarki eats Bryopsis (and Derbesia, but not Caulerpa) and will grow to adults on it-although in the field the adults eat Penicillus and Halimeda (but not Caulerpa). They seem to be able to switch over at about 1 cm. We know less about E. crispata juveniles. In the lab they did not eat anything we tried (Bryposis hypnoides, B. pennata or C. verticellata). The adults of E. crispata eat Penicillus or Halimeda, but not Caulerpa. Don't know about Bryopsis. With respect to the E. crispata juveniles, we were working on egg masses from animals collected in the Virgin Islands and shipped to Tampa - so while their larval development looked "fine" from a gross perspective and a large number hatched and metamorphosed, there may have been some problems due to the shipping.

Skip Pierce

pierce@cas.usf.edu

Pierce, S.K., 2006 (Jun 7) Re: Elysia diomedea breeding in home aquarium. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16806

Dear Skip,
Thanks for the summary. For those aquarium keepers who are breeding various "Lettuce Slugs"  the food of juvenile Elysia crispata is clearly still not resolved. If you have some in you aquarium, photos of them with their 'food' algae could be a valuable discovery. Have a look at my message #16728 where I compare 'true' E. crispata and the new species E. clarki.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Jun 7). Comment on Re: Elysia diomedea breeding in home aquarium by Skip Pierce. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16806

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