Figure from Bacterivory and herbivory play key roles in fate of Ross Sea production

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Figure 2. A colonial choanoflagellate from the euphotic zone of the Ross Sea. Approximately 30 individual cells are visible by light photomicrograph ( A ) among a tangle of costae that compose the vaselike loricae of this species. An epifluorescence micrograph ( B ) of the same colony shows the presence of numerous ingested fluorescently labeled bacteria inside most of the protozoan cells (examples shown by arrows in B). These ingested prey indicate an active bacterivorous assemblage.