Abstract
THE Opalinids are a very isolated group of Protozoa the relations of which to their normal amphibian hosts have been taken as indicating a high degree of specialization resulting from an association of great antiquity. A slowly growing number of records from non-amphibian hosts, namely, four species of reptiles, three of fish and one mollusc, however, appears inconsistent with this conclusion.
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SANDON, H. Opalinids from Nile Fish. Nature 164, 410 (1949). https://doi.org/10.1038/164410a0
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DOI: https://doi.org/10.1038/164410a0
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