Sleeping aggregations in Oxynoe olivacea

January 19, 2004
From: Thierry Thibaut

Dear Baki,
This behaviour is very common in Oxynoe olivacea as well with Lobiger serradifalci. I made the same observations during the 5 years I've cultivated this species in aquaria but I have also seen this behaviour in the field during night dives. I think they are mating rather than sleeping.
Sincerely,
Thierry Thibaut

thibautt@unice.fr

Thibaut, T., 2004 (Jan 19) Sleeping aggregations in Oxynoe olivacea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11939

Thanks Thierry
It would be interesting to check if they are mating. Certainly some in Baki's photos are oriented the wrong way for mating. Even if they are mating rather than sleeping, it is rather unusual for opisthobranchs to form nightly aggregations like this for any purpose
Best wishes,
Bill Rudman

Rudman, W.B., 2004 (Jan 19). Comment on Sleeping aggregations in Oxynoe olivacea by Thierry Thibaut. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11939

Factsheet

Oxynoe olivacea

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