small blue dorid from Japan

January 3, 2000
From: Satoru Hori

Dear Bill
I found this seaslug at Miura peninshula,
Yokosuka city, Japan.

This slug's image is located on the following URL:
http://www.asahi-net.or.jp/~IK8S-HR/image/umiushi/umiphoto/u_blue2.jpg

It was on the rock coverd with seaweed in the rocky beach on 29th Dec 1999.
Length :5mm, Depth: intertidal

Could you identify this?
Satoru

ik8s-hr@asahi-net.or.jp

Hori, S., 2000 (Jan 3) small blue dorid from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1720

Dear Satoru,
I think your animal is Doriopsis pecten. It is similar in shape to Doriopsis granulosa and I will put some pictures of it on the Forum when I return to Australia in two weeks.

One good way of identifying species of Doriopsis from their external appearance is to look at the gills. In Doriopsis they do not form a circle like in most dorids but are arranged in a transverse line across the back of the animal, each gill pointing backwards.

Best wishes,
Bill Rudman.

Rudman, W.B., 2000 (Jan 3). Comment on small blue dorid from Japan by Satoru Hori. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1720

Factsheet

Doriopsis pecten

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