Doriopsis granulosa - egg ribbon

March 5, 2003
From: Rachel Przeslawski

Hi Bill,
While at Lake Illawarra, New South Wales, Australia, recently, I found these two little slugs under a boulder. I brought them back to the lab in the hopes that they'd lay, and sure enough after one night I had this nice egg mass on an airstone. I'm pretty sure these are Dendrodoris carneloa due to the hard mantle and small pustules, but I thought I'd better doublecheck with you.

The egg ribbon looks similar to many other nudibranchs, with the exception that the egg-free rind that I often see on the edges of ribbons was completely absent in this species.

Thanks!
Rachel Przeslawski

rachelp@uow.edu.au

Przeslawski, R., 2003 (Mar 5) Doriopsis granulosa - egg ribbon. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9329

Dear Rachel,
Although it looks quite like D. carneola this is Doriopsis granulosa. Although it not too clear in your photos, if you look carefully you will see the gills stick out horizontally in a fan-shaped arrangement, with a rounded flap of mantle lying over the top of the gill pocket. This arrangement is only found in species of the genus Doriopsis. I see I promised a year or more ago to prepare pages on this species and Doriopsis pecten. I'll see what I can do.
Cheers,
Bill Rudman

Rudman, W.B., 2003 (Mar 5). Comment on Doriopsis granulosa - egg ribbon by Rachel Przeslawski. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9329

Factsheet

Doriopsis granulosa

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