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Diatom-Feeding Behaviour of the Free-Living Marine Nematode Chromadorita Tenuis

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For more content, see Nematology.

The feeding behaviour of the marine nematode Chromadorita tenuis on the pennate diatom Nitzschia sp. in agar culture is described and depicted. The two valves of the diatom are opened by damaging the girdle with the dorsal tooth and the contents sucked out. The empty frustule is then left in the substrate. Characteristic lipid droplets from the diatom cell can be observed in the intestine of the nematode in both living and fixed specimens. In the wild, patches of bacteria may be seen in the anteriormost part of the nematode's intestine. These findings confirm that the nematode is an epistratc feeder, with a preference for diatoms as food.

Affiliations: 1: Marine Biological Laboratory, University of Copenhagen, Strandpromenaden, DK-3000 Helsingör, Denmark


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