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/11939Thanks 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
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