Cadlina luteomarginata (MacFarland,1905)

Yellow-Edged Cadlina

Synonyms:  None
Cadlina luteomarginata
 Class Gastropoda
     Superfamily Eudoridoidea
      Family Cadlinidae
Cadlina luteomarginata  from 12 m depth at Sares Head,  WA. Anterior is to the right. Total length 4.5 cm. The ring of gills around the anus is retracted in this photo.
(Photo by: Dave Cowles, July 2020

Description:   Body usually 25-40 mm, can be 80 mm. Whitish to light yellow. Narrow band of yellow around margin and tips of tubercles are bright yellow.  Has bipinnate gills, numbering six.  Dorsum feels warty and gritty to touch, due to spicules.

How to Distinguish from Similar Species:  The yellow line around the edges, yellow-tipped tubercles, and yellow tips on the rhinophores are distinctive.

Geographical Range: Vancouver Island (British Columbia) to Punta Eugenia (Baja California)

Depth Range: Low-intertidal zone and subtidal to 45m

Habitat: Common under rocky ledges with sponges and tunicates

Biology/Natural History:  Feeds on sponges, including Halichondria panicea, Myxilla incrustans, and Higginsia sp. 

According to Baltzley et al., (2011), many gastropods, including this species, have a special network of pedal ganglia in their foot which assists in crawling.  The two main neurons involved produce pedal peptides which elicit an increase in the rate of beating of cilia on the foot, resulting in crawling.

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General References:
Behrens, 1991
Morris et al., (1980)

Scientific Articles:

Baltzley, Michael J., Allison Serman, Shaun D. Cain, and Kenneth J. Lohmann, 2011.  Conservation of a Tritonia pedal peptides network in gastropods.  Invertebrate Biology 130: 4 pp. 313-324

General Notes and Observations:  Locations, abundances, unusual behaviors, etc.

This individual was on eelgrass in a tidepool at San Simeon, CA.  Photo by Dave Cowles, April 1999

This individual was photographed underwater near Northwest Island by Kirt Onthank, February 2006

Authors and Editors of Page:
Robbie Wheeling (2002):  Created original page
Edited by Hans Helmstetler 1-2003
Edited by Dave Cowles, 2005