Berthella californica - mating & egg-laying

July 7, 2007
From: Jackie Hildering & Glen Miller

Glen and I found two different groups of Berthella californica with the clustering behaviour that we previously assumed was mating. Convenient now that both clusters had egg masses next to them. Mating indeed and another "Whose egg masses are those?" issue solved for us.

Locality: Bear Cove - Port Hardy, 35 feet, British Columbia, Canada, Pacific Ocean, 19 April 2007, Wall. Length: +/- 5 cm. Photographer: Jackie Hildering.

Jackie Hildering.

earthlingenterprises@telus.net

Hildering, J. & Miller, G., 2007 (Jul 7) Berthella californica - mating & egg-laying. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20109

Dear Jackie and Glen,

Wow the Pacific NW folks have been busy lately.

Great observations. In the top photo, the juxtapostion of the three animals, precludes mating, which is surely what is going on in the bottom photo.

The egg masses are definitely those of Berthella californica. Nice undulating white ribbons, attached to the substrate on one edge.

Keep up the good work,
Dave Behrens

Behrens, D.W., 2007 (Jul 7). Comment on Berthella californica - mating & egg-laying by Jackie Hildering & Glen Miller. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20109

Factsheet

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