Pristionchus maupasi

 

Contents

 

Rev: 02/01/2022

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

Chromadorea
  Diplogastria
   Diplogastrida
    Diplogastroidea
Diplogastridae
(formerly Neodiplogastridae
             Mononchoidinae)
           Pristionchus maupasi (Potts, 1910) Paramonov 1952
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        Synonyms:
     

    Extensive research conducted in the laboratory of  Ralf Sommer, Max Planck Institute for Developmental Biology, Tubingen, Germany.

     
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    Morphology and Anatomy:

     

     

    Females:

      


     

    Males:  


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

     

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    Distribution:

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    Economic Importance:

     

     

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    Feeding:

    Necronemic associations with insect hosts (Poinar, 1979).

    Pristionchus spp. have cellulases, presumably through horizontal transfer from microbes (Smant, 1998).

    Unlike the rhabditids, Pristionchus and other diplogasterids do not have a grinder in the basal bulb of the esophagus, so there are living bacteria in the intestine. 

    The mouth also differs from the tubular stoma of the rhabditids and has two forms, with teeth (eurystomatous) or without teeth (stenostomatous).  Tooth formation is triggered by starvation, similar to the dauer trigger in C. elegans.  Eurystomatous forms are able to feed on fungi.

     

       
       
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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

     

    Dauerlarva formation occurs under conditions of high nematode density and low food availability, similar to C. elegans.

    The nematode—insect association, in which nematodes infest the surface of insects and wait for their hosts to die before resuming development on the cadaver, is known as necromeny (Hong et al, 2008).  Pristionchus nematodes infest live insects but do not noticeably reduce the fitness of their hosts; but consume the microorganisms on the decomposing carcass after death of the insect.

    Developmental phenomena such as  formation of dauer larvae formation, and different forms of the mouth can be influenced by changes in temperature and food availability to the host insect. (Hong et al., 2008).

     
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    Ecosystem Functions and Services:

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    Management:

     
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    References:

    Hong, R.L.., A. Svatoš , M. Herrmann, and R.J. Sommer. 2008. Species-specific recognition of beetle cues by the nematode Pristionchus maupasi. Evolution and Development 10: 73-279.
    Poinar, G.O. JR. 1979. The Natural History of Nematodes. USA, Prentice-Hall Inc. 323 pp.
    Sommer, R. 2008. Genetic and transgenic approaches in the nematode model Pristionchus pacificus.Fifth International Congress of Nematology, Brisbane, Australia, July 2008.     
     
    Copyright © 1999 by Howard Ferris.
    Revised: February 01, 2022.