Feeding behaviour in Gymnodoris striata

September 25, 1999
From: Scott Johnson

Hi Bill,

Continuing the story of Gymnodoris striata at Enewetak Atoll, Marshall Islands.

As I said, they liked to eat Plakobranchus ocellatus, which is typically present all the time. These four pictures show a couple of different Gymnodoris individuals eating Plakobranchus; the predator's body often contracted while consuming its prey.

Scott

johnson@kmr.ll.mit.edu

Johnson, S., 1999 (Sep 25) Feeding behaviour in Gymnodoris striata. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1369

Dear Scott,
Thanks for the photos. Can I assume from Johnson & Boucher (1983), that these Gymnodoris were about 50mm long? which would make the Plakobranchus about 20mm. I have posted some material on G. striata and 'G. amakusana', suggesting they may be colour forms of each other. There seems to be a bit of colour variability in the photos you have sent. If you have some photos showing a range in colour variability, they would be very welcome.

Best wishes,
Bill Rudman.

Rudman, W.B., 1999 (Sep 25). Comment on Feeding behaviour in Gymnodoris striata by Scott Johnson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1369

Factsheet

Gymnodoris striata

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