E-Fauna BC: Electronic Atlas of the Wildlife of British Columbia

Pollicipes polymerus Sowerby, 1833
Goose-Neck Barnacle
Family: Pollicipedidae
Species account author: Ira Cornwall.
Extracted from The Barnacles of British Columbia (1955).
Photo of species

© Jim Riley  Email the photographer   (Photo ID #15734)

E-Fauna BC Static Map
Distribution of Pollicipes polymerus in British Columbia
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Species Information


Description

Size large, capitulum up to 45 mm (1¾ inches) in length, peduncle up to 6 inches in length. Capitulum enclosed by two large plates on each side and one (the carina) on the back edge. Below these are several rows of small plates, numbering up to a hundred or more, depending upon the age of the barnacle. Surface of peduncle with many small calcareous scales.

Colour

Creamy white on the plates, dark brown in the inter-spaces and on the peduncle. The cirri are faintly yellow.

Distribution

World-wide; in the littoral zone below half-tide mark but only where there is strong wave-action. Occasionally specimens have been found growing on the whale barnacle Coronula diadema, and sometimes on ships.

Notes

This is the only pedunculate barnacle found on the British Columbia coast above the low-tide level. Specimens vary greatly in length. Those on the edge of a group usually have short peduncles while those at the centre may have stalks 6 inches long. When a sessile barnacle becomes attached to a plate on the capitulum, in time the outer lamina splits off carrying the sessile barnacle with it, possibly as a result of the tensions set up between the two shells. Such an event provides the only known case where any portion of the calcareous covering of a barnacle is detached during the life of the animal. The peduncle can be used as food. When steamed for twenty minutes and skinned, the flesh is red and tastes like lobster.

Status Information

Origin StatusProvincial StatusBC List
(Red Blue List)
COSEWIC
UnlistedUnlistedUnlistedUnlisted
BC Ministry of Environment: BC Species and Ecosystems Explorer--the authoritative source for conservation information in British Columbia.

Additional Photo Sources

General References


Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2021. E-Fauna BC: Electronic Atlas of the Fauna of British Columbia [efauna.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2022-01-16 2:28:40 AM]
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