RE: Bulla quoyii - breeding observations

November 19, 2003
From: Rachel Przeslawski

Paul's recent description of Bulla quoyii egg masses sounded quite familiar. In Feb 2003, I collected what looked like a completely white Aplysia egg mass under a boulder near some algae in Wollongong. Usually when these egg masses are so pale, it is a sign that they have hatched or are completely inviable. However, when I examined the eggs in this mass under the microscope, I found that almost all of them were developing quite happily, 1 to each capsule.

Of course I can't be certain this egg mass belongs to Bulla quoyii, but the similarities to Paul's description match quite well. I have never seen adults in the area, and I have never seen its egg masses again. However, I find Bullina lineata in this area with some frequency... do these two species share the same habitat?

Cheers
Rachel

rachelp@uow.edu.au

Przeslawski, R., 2003 (Nov 19) RE: Bulla quoyii - breeding observations. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11437

Thanks Rachel,
Your eggs could well be those of Bulla. Bullina lineata, like its larger relative, Hydatina physis are found on both rocky reefs and soft shores so there is no real reason why Bullina and Bulla could not be found together.
Best wishes
Bill Rudman

Rudman, W.B., 2003 (Nov 19). Comment on RE: Bulla quoyii - breeding observations by Rachel Przeslawski. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11437

Factsheet

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