Biology and morphology of freshwater rapacious flagellate <Emphasis Type="Italic">Colponema</Emphasis> aff. <Emphasis Type="Italic">loxodes</Emphasis> Stein (Colponema,Alveolata) |
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| Authors: | Z M Myl’nikova A P Myl’nikov |
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| Institution: | (1) Neurotoxicology Group, Laboratory of Neurobiology, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA;(2) Gene Regulation Section, Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA; |
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| Abstract: | The biology, morphology, and ultrastructure of the freshwater rapacious flagellate Colponema aff. loxodes, which attacks bodonids and chrysomonads, are studied. The flagellate is characterized by three-membrane alveolar pellicle,
vesicular nucleus, two heterodynamous flagella, two microtubule bands which armor the longitudinal groove, and mitochondria
with tubular cristae. Toxicysts (thread-organelles) are found in the cytoplasm. The posterior flagellum is characterized by
the proximal fold. Micropores are completely absent. After being caught, the prey is taken into the longitudinal groove. Vegetative
swimming cells are present in the life cycle. No reproduction or latent cysts are found. The taxonomical position of Colponema aff. loxodes is discussed in comparison with other colponemids and protists. |
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