Two types of Fiona pinnata from Hachijo Island Japan

June 21, 2002
From: Shouichi Kato


Dear Bill,
A member of my staff, S. Harazaki, picked up an interesting driftwood, in May. There were dozens of Fiona pinnata and we tried separate them to two types.
One type (LOWER PHOTO), is typical one, with white body and light brown rhinophore, around 10mm in size.
Another type (UPPER PHOTO) is larger, 20mm - 30mm in size, has brown body, release a lot of eggs on the driftwood.

I'm interested in knowing if two types of Fiona pinnata can be found on one driftwood.

Best regards,
S.Kato

regulus@edit.ne.jp

Kato, S., 2002 (Jun 21) Two types of Fiona pinnata from Hachijo Island Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7269

Dear Shouichi,
This is an interesting observation. I don't recall seeing the darkly pigmented form of Fiona before. I think we would need to have a closer look at the animal to see just what you have here.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (Jun 21). Comment on Two types of Fiona pinnata from Hachijo Island Japan by Shouichi Kato. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7269

Factsheet

Fiona pinnata

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