MORPHOLOGY OF CHRYSOCHROMULINA-LEADBEATERI (PRYMNESIOPHYCEAE) FROM NORTHERN NORWAY

In 1991, a Chrysochromulina Lackey species identified as C. leadbeater i Estep et al. was the dominant species in a toxic algal bloom in Vest fjorden, northern Norway, that killed caged salmon. For the first time , living cells of this species could be studied and material sectioned for fine structural investigations. The scale morphology and microana tomy of the species are described from cultured material obtained from the bloom and are compared with natural material from the same event, as well as with unpublished information from the Mediterranean and th e Norwegian coasts, and with previously published information on scale morphology for specimens assigned to this species. Differences in sca le morphology between specimens identified as C. lendbeateri are evide nt, but no subdivision of the species is proposed at present.