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Systematic Parasitology

, Volume 1, Issue 3–4, pp 171–187 | Cite as

Notes on african opalinids (Protozoa, Opalinata). I Zelleriella spp

  • H. Sandon
Article

Summary

The features by which the body-form of a species of Zelleriella may be described are defined and compared with those of Opalina and Protoopalina.

Z. africana Sandon: The two forms previously included under this name are re-examined, some developmental stages are described and the relationships between the two forms discussed.

The following new species are described: Z. angusticeps from Bufo angusticeps Smith from Cape Town; two species from Nile fish, namely, Z. distichodi from Distichodus rostratus Gunther (Citharinidae) and Z. synodontis from Synodontis clarias (Linnaeus) (Siluridae).

Two types of cyst are described, one small, usually mononucleate, and relatively thick-walled, the other much bigger, binucleate, thin-walled and ciliated.

In Z. angusticeps separation of the two halves in cytokinesis begins at the posterior end of the body, the falx being the last part to divide. Such division is contrasted with the kind of interkinetal fission found in other opalinids and with the longitudinal fission of flagellates. The evidence that there are two types of longitudinal fission among the Zelleriellas is discussed.

Life-cycles, geographical distribution and host relationships are also discussed. ac]19790807

Keywords

Daughter Cell Anterior Margin Nuclear Division Ventral Margin Dorsal Margin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Dr. W. Junk b.v. Publishers 1980

Authors and Affiliations

  • H. Sandon
    • 1
  1. 1.5, Somerset CourtBrixhamEngland

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