Published online by Cambridge University Press: 11 May 2009
A survey of forty-eight species of British marine invertebrates has shown that porphyrins which have not previously been described in these animals are present in three representatives of the Annelida, two of the Mollusca and two of the Echinodermata. The occurrence of protoporphyrin in Asterias rubens was confirmed in a previous paper (Kennedy & Vevers, 1953b). A redfluorescent extract was obtained from the sponge Tethya aurantium, but it contained too little material for further investigation. No trace of a porphyrin was found in the coelenterates, crustaceans and tunicates examined, although Moseley found ‘polyperythrin’ (which MacMunn later identified with the ‘haematoporphyrin’ of Asterias and Arion) in Flabellum and Fungia.
Chlorocruoroporphyrin was found free in the starfishes Luidia and Astropecten. Uroporphyrin was extracted from the soft dorsal integument of Duvaucelia (= Tritonia) plebeia, and from the integument of Aplysia punctata, observations of interest in view of the widespread occurrence of uroporphyrin in mollusc shells.
Coproporphyrin III was characterized from extracts of the viscera of Myxicola infundibulum, Nereis diversicolor and Chaetopterus variopedatus. Evidence of the occurrence of a penta-carboxylic porphyrin was obtained from paper chromatography of the extract from the gut of Chaetopterus.
These findings are discussed in comparison with the distribution of porphyrins in birds and mammals.