Re: Diaulula sandiegensis from Vancouver Island

March 2, 2007
From: Brian Penney

Concerning message #19543:

Concerning the coloration/pattern of Diaulula sandiegensis in northern part of its range:

During my time in Bamfield, British Columbia, (a little bit north of Sooke), I typically found D. sandiegensis with a pattern similar to that in Minette's message in the intertidal and shallow subtidal. However, at deeper depths (5m+ is my recollection), we typically found individuals with the color pattern shown in Jim Lyle's message [#17078]. At least at the sites I dove, the two color morphs were very clearly associated with these different depths.

I also discussed this with Angel one time, and am intrigued that there are no morphological differences between the forms. This might make an interesting molecular study system to look for genetic separation among populations (as in some of Chris Todd's work).

Locality: Bamfield, B.C., 1-12m, British Columbia, Canada, Northeast Pacific, 1997-2000, boulder-cobble

Best
Brian

bpenney@anselm.edu

Penney, B.K., 2007 (Mar 2) Re: Diaulula sandiegensis from Vancouver Island. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19575

Thanks Brian,
Bill Rudman

Rudman, W.B., 2007 (Mar 2). Comment on Re: Diaulula sandiegensis from Vancouver Island by Brian Penney. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19575

Factsheet

Diaulula sandiegensis

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