Another Pseudotritonia quadrangularis

February 23, 2007
From: Nerida Wilson

Hi everyone,
I thought this might be an ideal time to share the image I have of Pseudotritonia quadrangularis. This specimen was the only one we ever trawled (most trawls are not designed to collect such small animals) in two cruises down in Antarctica.

Locality: Bransfield Strait, 277 m, Antarctica, S63°23.05’ W60°03.4’, 6 December 2004, Trawled. Length: >20 mm. Photographer: Halanych Lab.

Nerida Wilson

ngwilson@ucsd.edu

Wilson, N.G., 2007 (Feb 23) Another Pseudotritonia quadrangularis. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19515

Dear Nerida,
Thanks for an interesting addition. When I saw your animal was trawled at 277 m I thought it was quite a lot deeper than David Cothran's animal from 18 m [message #19509], but on checking previous records [Wagele et al, 1991] I see that most records are at even greater depths - down to 574 m in the Weddell Sea. Your photo shows the same ridged rhinophores seen in David's animal.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Feb 23). Comment on Another Pseudotritonia quadrangularis by Nerida Wilson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19515

Factsheet

Pseudotritonia quadrangularis

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  1. Pseudotritonia quadrangularis from Antarctica
    From: David Cothran, February 22, 2007

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