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BARNACLES Intro page

Darwin called the present geologic era “the age of barnacles” The image left shows a semi-exposed shore in Hecate that is dominated by the 4 locally common species: Balanus gladula, Semibalanus cariosa, Pollicipes polymerus, and Chthamalus spp

Barnacles are Weird It took naturalists almost a century to convince themselves these armored animals were not a form of mollusc (clam) but were more related to crabs and insects: the planktonic phases (excellent account images here) were similar to known animals which then transformed into barnacles (standing on head, using legs to feed with, etc.)

A university lab exercise page w drawings and text explanations

	Since Darwin
	The Balanus group can be differentiated from Chthamalus by how overlaps Rostrum (Latin for prow/ bow of a boat). The carina is Latin for keel of a boat

“Read” which species it is by looking closely at the ‘letters

B. glandula -- M	Semibalanus VVV
Goose barnacle	Chthamalus “cross”

Composed by LG on Thursday, June 06, 2002

Last modified on 3/17/04 11:21 AM