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Zoology Publications from Victoria University of Wellington—Nos. 42 to 46

Abstract

Abstract

Thin layer chromatography followed by spectrophotometry shows thirteen pigments in both the green and brown varieties of Isactinia olivacea (Hutton, 1878) collected from well illuminated, mid-tidal zone rock pools in the Island Bay area, Cook Strait. Phaeophytin, anthocyans, β-carotene and carotenoid pigments are found in both colour varieties. Colour variation is due to marked differences in density of carotenoid compounds. Two new pigments, an anthocyan and a flavone are described and named. The pigments have three functions; protective colouration, shielding against harmful effects of ultraviolet light, and in the case of flavin, contributing to basic metabolism.