Rev: 11/19/2019
Trischistoma veracruzense Cid del Prado, Ferris and Nadler, 2010
Synonyms:
Cid del Prado et al., 2010.
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
Type locality: Soil around roots of trees in a tropical forest in San Fernando, Municipio de Soteapan, Los Tuxtlas, Estado de Veracruz, Mexico (N 18° 18.58´; W 94° 53.45´), 1040 m above sea level.
Nematodes of the family Tripylidae are generalist predators of small aquatic and soil organisms. Many authors have commented on the freshwater andwet 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).
Ecophysiological Parameters:
Predation and population regulation of prey species.
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 México and the USA with descriptions of new species. Journal of Nematode Morphology and Systematics 13-28-49.