Re: Cerberilla asamusiensis from the Japan Sea

July 22, 2002
From: Shigeru Hayashi


Dear Bill,
Here is a photo to answer your question about the colour of the cerata in this species. As you thought, the black and yellow colours in the cerata of Cerberilla asamusiensis are in the digestive gland duct. I checked with a microscope.

I have also sent a photo of its egg mass.

Photos - Courtesy Takaoka Biological Club, Japan.
Sincerely yours
Shigeru Hayashi

jr9dsx@tko.fitweb.or.jp

Hayashi, S., 2002 (Jul 22) Re: Cerberilla asamusiensis from the Japan Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7562

Dear Shigeru,
Thanks for checking the colour for me. Thanks also for the egg mass photo. As well as having long oral tentacles and a very broad foot as adaptations for living in the sand, it also has a long string or thread on the end of its egg ribbon. It ises this thread to anchor the egg ribbon in the sand by attaching it to a large rock or shell, or to the rock layer under the sand. Many sand dwellers,such as the aglajids, have a similar long thread on their egg masses.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (Jul 22). Comment on Re: Cerberilla asamusiensis from the Japan Sea by Shigeru Hayashi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7562

Factsheet

Cerberilla asamusiensis

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