Tripylina montecilloensis

  

Contents

  

Rev: 11/19/2019

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

Enoplea
    Enoplia
        Enoplida
            Tripylina
                 Tripyloidea
                    Trischistomatidae

Tripylina montecilloensis Cid del Prado-Vera, Ferris, Nadler & Lamothe-Argumedu, 2012

 
    Synonyms:
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Morphology and Anatomy:

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Tripylina montecilloensis (female). A,C: Anterior end. B: Pharynx. D: Preanal papillae. E: Posterior end. F: Pharyngeo-intestinal junction. G: Tail. H: Vulva region.

from Cid del Prado et al., 2012

Female:

Body C-shaped upon fixation.

Cuticle 1.0-3.0 μm thick, with fine transverse striation visible under SEM; body pores absent but somatic setae, each surrounded by a cuticular ring at the base, sparsely distributed along the body.

Lip region asymmetric, conoid, continuous with body contour, 14-23  μm wide at the base of the outer labial setae.

 Oral aperture surrounded by three lips; two conical inner labial papillae at the base of each lip; outer labial setae 10-15 μm long; cephalic setae conical, 5-10 μm long, 1.5 μm behind the outer labial setae.

Amphid apertures small, oval, at level of the dorsal tooth, 15-26 μm of from the anterior end.

Two ventromedian cervical setae, 22 μm apart, at 60-100 μm behind the lip region.

Dorsal wall of stoma not thickened; dorsal tooth small, located at 14-20 μm  from the anterior end and 3-6 μm behind the subventral teeth.

Cardia relatively small, 10-16 μm long and 10-29 μm wide, with two pericardiac cells.

Distance from pharynx base to vulva 349-556 μm and to anus 514-1034 μm.

Nerve ring at 60-96 μm from the anterior end.

Excretory pore indiscernible.

Genital system monodelphic-prodelphic, 75-174 μm long: ovary reflexed, vagina lacking sclerotized pieces, and vulval lips not protruding.

Tail curved ventrad, ending in a small spinneret; latero-dorsal
setae lacking.


Male:

 Unknown.

 

   
   

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

 

 
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Distribution:

Type locality and habitat: Mexico, Mexico State, Texcoco, Campus Montecillo, altitude 2220 m a.s.l. (N19° 27’ 48.042”, W 98° 54’ 15.451”), in soil from an area of nursery trees at the Colegio de Postgraduados.

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Feeding:

Nematodes of the family Tripylidae are generalist predators of small aquatic and soil organisms. Many authors have commented on the freshwater and
wet soil in which these nematodes are found, and on the nature of their prey based on observation of intestinal contents or from behavior. Among the recorded prey, as reviewed and collated by Small (1987), are nematodes, rotifers and protozoa (Cid del Prado et al., 2012). 

Nematodes in the Tripylidae attach to soil particles or other substrate via adhesive material extruded from the caudal glands through the spinneret.  Thus anchored, the body moves quite reapidly in water films, sometimes thrashing vigorously.  This behavior has at least three possible purposes: 1. to make tactile contact with prey organisms, 2. to create currents that stir up the sediment and potential prey organisms settled therein, and 3. to anchor the nematode in currents of moving water.

Interestingly similar attachment and feeding behavior occurs in other nematode groups  that, based on most characters, appear to be only distantly related.  For example, the generalist predators of the Tripylidae are in the Class Enoplea, Subclass Enoplia, Order Enoplida, the specialist predators of other nematodes in the Mononchidae are in the Class Enoplea, Subclass Dorylaimia, Order Mononshida, while the bacterivorous Plectidae are in the Class Chromadorea, Subclass Chromadoria, Order Plectida, according to the phylogeny proposed by De Ley and Blaxter, (2002, 2004).

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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:

Brzeski, M.W. (1965): On the identity off TrischistomaCobb andd TripylinaTripylina Brzeski. Nematologica 11:449.

Cid del Prado, I., H. Ferris and S.A. Nadler. 2010. Soil inhabiting nematodes of the genera Trischistoma, Tripylina and Tripyla from México and the USA with descriptions of new species. Journal of Nematode Morphology and Systematics 13-28-49.

 Cid del Prado Vera, I., Ferris, H., Nadler, S.A., Lamothe Argumedo, R. 2012.Four new species of Tripylina Brzeski, 1963 (Enoplida: Tripylidae) from México, with an emended diagnosis of the genus.  Journal of Nematode Morphology and Systematics 15: 71-86.

SDe Ley, P. and Blaxter. M. 2002.  Systematic position and phylogeny.  In:  D. L. Lee (ed) The Biology of Nematodes.

De Ley, P. and Blaxter. M. 2004.  A new system for Nematoda: combining morphological characters with molecular trees, and translating clades into ranks and taxa.  Nematology Monographs and Perspectives, 2004: 633-653.

 Small, R.W. 1987. A review of the prey of predatory soil nematodes. Pedobiologia, 30: 179-206.
 
Copyright © 1999 by Howard Ferris.
Revised: November 19, 2019.