Viannaia angelae

 

Contents

 

Rev: 12/17/2024

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

Chromadorea
  Chromadoria
  
     Rhabditida
           Rhabditina
             Infraorder Rhabditomorpha
                  Heligosomoidea
       Viannaiidae
                    Viannaiinae
       Viannaia angelae Ramirez-Canas, Lopez-Cballero & Mata-Lopez, 2021

    Synonyms:
     

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Morphology and Anatomy:

 

Females:

  • Monodelphic.
  • Vulva with prominent protruding lips.
  •  Vagina vera with cuticularized walls
  • Eggs with thick shellsNo spine on tail end.
     

  
   


Males:  

  • Caudal bursa sub-symmetrical, wider than long, Ray 4 shorter than rays 2–3 and 6, but longer than 5. Rays 5 and 6 parallel, ray 6 slightly longer than 5, almost reaching bursa margin. Ray 5 shortest of rays. Dorsal lobe short and slender. Ray 8 long and slender, arising from the base of dorsal ray without reaching bursa margin. Dorsal ray short, divided at about its mid-length into 2 branches, each branch giving rise to 2 small sub-branches: rays 9 (external branches) and 10 (internal branches). Rays 9 and 10 equal in size
  •  Gubernaculum small and cuneiform,
  •  Genital cone small, moderately developed, 3
  • Spicules long, simple, equal in length and shape, with a thick and rounded base; spicules become thinner to slightly sinuous

Ref: Ramirez-Canas et al (2021)



Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

 

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Distribution:

Dseacribed from the small intestine of an opossum (Didelphis virginiana) collected in Colima, Mexico.

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Economic Importance:

 

 

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Feeding:

 
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Biology and Ecology:

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Life Cycle:

 

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters
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Ecosystem Functions and Services:

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Management:

 
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References:

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.

 

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