Paradoris dubia and egg ribbon

August 20, 2007
From: Bruce Potter


Dear Bill,

I spotted this Paradoris dubia up under some weeds and in trying to move the weeds aside I bumbed the nudi loose from its position. I then saw that it was laying eggs. So the egg ribbon should be a circle, not stretched out like this, but thought it might be of interest anyway.

Locality: Rockingham, 3 metres, Western Australia, Indian Ocean, 11 August 2007, Mucky under Jetty. Length: 20 mm. Photographer: Bruce Potter.

Regards
Bruce Potter.

bandppotter@bigpond.com

Potter, B., 2007 (Aug 20) Paradoris dubia and egg ribbon. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20477

Dear Bruce,

I am so glad you thought it worth photographing the egg ribbon - if a bit dishevelled. To my recollection this is the first information we have on the eggs of this species. From your photo, the eggs look relatively large, which could suggest that the larvae are not planktotrophic veligers, swimming and feeding in the plankton for some weeks, but either lecithotrophic, with a short non-feeding larval life, or hatching directly as minute crawling slugs.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Aug 20). Comment on Paradoris dubia and egg ribbon by Bruce Potter. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20477

Factsheet

Paradoris dubia

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