Viannaia

  

Contents

  

Rev: 10/17/2024

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Viannaia Menu Ecosystem Functions and Services
Distribution Management
Return to Viannaiidae Menu Feeding  References
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Classification:

         Chromadorea

Chromadoria

         Rhabditida

Rhabditina

             Infraorder Rhabditomorpha
                  Heligmosomoidea
       Viannaiidae
                    Viannaiinae
                  Viannaia Travassos, 1914
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        Synonyms:
         

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    Morphology and Anatomy:

    Species are characterized by having a synlophe with 3 sub-ventral cuticular ridges oriented from right to left, with the absence of lateral and dorsal cuticular ridges (Durette-Desset, 1983).

     

     

    Females:

    • Monodelphic

      
     

    Males:  

    •  cordiform bursa with a well-developed dorsal lobe, a long and robust dorsal ray, and short and robust ray 8

    Ref: Ramirez-Canas et al., 2021

    Body size range for the species of this genus in the database - Click:
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    Distribution:

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    Feeding:

    Intestinal parasites of south American marsupials (opossums), rodents and monkeys.

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    Biology and Ecology:

     

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    Life Cycle:

     

    For Ecophysiological Parameters for this genus, click 
     
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    Ecosystem Functions and Services:

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    Management:

     
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    References:

    Beveridge, I., Spratt, D.M.  and Durette-Desset, M-C. 2014. Order Strongylida (Railliet and Henry, 1913). In Schmidt-Raesa, A. (ed). Handbook of Zoology: Gastroctricha, Cycloneurelia and Gnathifera. Vol 2. Nematoda. De Gruyter, Berlin.

    Durette-Desset, M. C. 1983. Keys to genera of the superfamily Trichostrongyloidea. InKeys to the Nematode Parasites of Vertebrates. No. 10, R. C. Anderson and A. G. Chabaud (eds.). Commonwealth Agricultural Bureaux, Farnham Royal, U.K., p. 1�68. 

    Ramirez-Canas, S.A., Lopez-Cballero, J.D., Mata-Lopez, R. 2021. Morphological and molecular data eveal two new species of Viannia (Nematoda: Viannaiidae), parasitizing opossums (Mammalia: Didelphidae) in Mexico. J. Parasiitol 107:388-403.

     

     
    Copyright © 1999 by Howard Ferris.
    Revised: October 17, 2024.