May 25, 2006
From: Mike Neubig
Following on from my last message [#16670] I thought you might enjoy this group photo of eight Bulla gouldiana. Also in the photo is a mucus tube derived from an individual that is off the left edge of the photo. This photo depicts a particularly dense cluster. More generally, in this region of the canyon rim, today, there would be 2 Bulla per field.
Locality: Valley-Sea-Toes, La Jolla Shores, 14m, California, USA, Eastern Pacific Ocean, 20 May 200, sandy sloping shoulder of La Jolla Canyon. Length: 20 mm typ (shell). Photographer: Mike Neubig.
firstname.lastname@example.orgNeubig, Mike, 2006 (May 25) Bulla gouldiana aggregation, San Diego. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16673
It certainly looks like this is a good year from Bulla gouldiana in the San Diego region. In this photo it looks like the Bulla are grazing on a dark brown algal or bacterial layer covering the bottom. The pale grey areas, I presume, are areas they have scraped the layer off. From my experience, species of Bulla tend to feed on green algae or 'algal' layers like this.
Bulla gouldiana - egg laying
From: Kevin Lee, August 9, 2006
Re: Gould's Bubble Snail - aggregation
From: Kevin Lee, May 25, 2006
Bulla gouldiana behaviour from San Diego
From: MIke Neubig, May 25, 2006
Gould's Bubble Snail - shell damage
From: Kevin Lee, May 3, 2006
Bulla gouldiana from La Jolla, California
From: Barbara Jeanne Lloyd, April 17, 2006
Bulla gouldiana - Gould's Bubble Snail
From: Barbara Jeanne Lloyd, February 27, 2006
Bulla gouldiana, detail of shell markings
From: Mike Neubig, February 27, 2006
Bulla gouldiana from San Diego
From: Mike Neubig, February 21, 2006