Re: Risbecia tryoni - trailing observations:
August 26, 2006
From: Roberto Sozzani
Concerning message #17506:
Dear Bill,
What I've noticed about Risbecia tryoni is that they are very often in couples, resting side by side, touching each other, but not mating. It seems they like a physical contact. I've several photos showing this behaviour, I only need to find them. With other species, on the contrary, a couple side by side is almost everytime mating.
Maybe is not a "bright idea", but what if the trailing behaviour is just a way to keep this physical contact also when they are crawling around? If this is true, trailing behaviour is only one aspect of a wider general need (or pleasure?) to always keep reciprocal contact.
Best wishes
Roberto Sozzani
www.robertosozzani.it
roberto.sozzani@fastwebnet.it
Sozzani, R., 2006 (Aug 26) Re: Risbecia tryoni - trailing observations:. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17592Dear Roberto,
I'm not sure how far we can go with sea-slug emotions. Trailing behaviour is a fascinating phenomenon which we still know little about. Quite a few species follow the mucus trails of others of their own species apparently to meet, mate and perhaps find food, and there are others which are predators, which follow the mucus trails of potential prey. However there also seem to be this third group which compulsively 'trail' others of the same species, and don't have an 'off' switch.
Best wishes,
Bill Rudman
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