Tripylina arenicola

Tripylina arenicola	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 arenicola (De Man, 1880) Brzeski, 1963.

    Synonyms:

Tripylina arenicola (De Man, 1880) Brzeski, 1963. Female. (A-J). A: Entire body; B: Cardia; C: Anal region; D: Vulva lateral view; E, G: Anterior end; F, H: Tail; I: Spinneret; J: Gonad of young female.

from Cid del Prado et al., 2010

Females:

C-shaped, with the end of the tail bending first ventrally then dorsally.

Lip region asymmetrically rounded and continuous with body contour.

Amphid aperture 14.0-18.5 μm (16.1}from anterior end.

Inner labial papillae small and conical, 2.0-4.0 μm (2.6}long; outer labial setae 12.0-15.5

μm (13.9} long or 66-88% (80.4}4) of lip region width; cephalic setae thin, conical, 5.0 μm long, 1.0-

2.0 μm (1.4}behind outer labial setae.

Single small ventromedian cervical seta 47-88 μm (65) from the anterior end.

Dorsal tooth small, wedge-shaped; two small subventral teeth 3.1-5.1 μm (3.7} posterior to the dorsal tooth.

Esophagus separated from intestine by a prominent cardia, 8.5-16.0 μm (11.7} long by 24-29 μm (26.1}wide.

Vulva slit-shaped, without protruding lips but with two very small sclerotised structures.

Monovarial, prodelphic, reflexed in mature fenales to the level of the vulva or slightly posterior to it.

Postuterine sac absent. Tail lacking transverse striations, 71-

91 μm long in live and 51-79 μm in preserved specimens,

ending in a short spinneret. (Cid del Prado et al., 2010)

Males:
Unknown

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

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Distribution:

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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 of Trischistoma Cobb and Tripylina 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 MÃƒÂ©xico and the USA with descriptions of new species. Journal of Nematode Morphology and Systematics 13-28-49.