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Acta Parasitologica

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Volume 59, Issue 2

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Aspects of the morphology of the juvenile life stages of Paradiplozoon ichthyoxanthon Avenant-Oldewage, 2013 (Monogenea: Diplozoidae)

Annemariè Avenant-Oldewage
  • Department of Zoology, Kingsway Campus, University of Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa
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/ Simon Milne
  • Pathology Division, National Institute for Occupational Health, National Health Laboratory Service, P.O. Box 4788, Johannesburg, 2000, South Africa
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Published Online: 2014-05-15 | DOI: https://doi.org/10.2478/s11686-014-0235-1

Abstract

There are eight life stages in the life-cycle of Diplozoon paradoxum and limited knowledge of the life-cycle for other diplozoid genera exists. The aim of this study was to record the number of life-stages of Paradiplozoon ichthyoxanthon obtained from, Labeobarbus aeneus and Labeobarbus kimberlyensis, in the Vaal Dam from 2005 to 2007. Six larval life stages and one adult stage of P. ichtyoxanthon were identified from specimens collected in vitro and in situ. In vitro, eggs hatched after 21 days at 18°C. Eggs collected during winter were significantly larger than those laid during spring or summer. Paradiplozoon ichthyoxanthon oncomiracidia have peripheral eyes with pink pigmentation, a tubular anterior bladder-like structure, bicuspid basal pharynx valve and a branched digestive caecum and residual shell material or vitellaria in the caecum. Immature reproductive tissue connected to the ventral sucker and dorsal papillae were noted for the first time in diporpa. Large nervous ganglia and innervation of muscle were observed around the ventral sucker.

Keywords: Labeobarbus aeneus; Labeobarbus kimberlyensis; Vaal Dam; life-cycle; Diplozoidae; Paradiplozoon ichthyoxanthon

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About the article

Published Online: 2014-05-15

Published in Print: 2014-06-01


Citation Information: Acta Parasitologica, Volume 59, Issue 2, Pages 247–254, ISSN (Online) 1896-1851, DOI: https://doi.org/10.2478/s11686-014-0235-1.

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© 2014 W. Stefański Institute of Parasitology, PAS. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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