ALLOXANTHIN IN DINOPHYSIS-NORVEGICA (DINOPHYSIALES, DINOPHYCEAE) FROMTHE BALTIC SEA

The pigment composition of Dinophysis norvegica Ehrenberg from the cen tral Baltic Sea differs from the normal pigment pattern found in dinof lagellates, which contain peridinin as a typical market pigment. In D. norvegica isolated by cell fractionation of field samples, the major carotenoid was alloxanthin, a typical cryptomonad pigment. No evidence was found that the presence of alloxanthin was due to a recent phagot rophic uptake of cryptomonads, so the presence of alloxanthin in D. no rvegica may be a consistent feature of a permanent endosymbiosis.