Nevadanema fimbriatum

Nevadanema fimbriatum	Contents	Rev 06/16/2023
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Nevadanema Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Dorylaimidae Menu	Feeding	References
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Classification:

Enoplea

Dorylaimia
Dorylaimida

Dorylaimidae

Labronematinae

Nevadanema fimbriatum (Thorne, 1939) Alvarez-Ortega & Pena-Santiago, 2012

Synonyms:

Labronema fimbriatum Thorne, 1939

Morphology and Anatomy:

Moderately slender to slender, medium to large size, 2.4 mm long.
Body cylindrical, tapering towards anterior end.
Cuticle two-layered, outer layer thinner than inner one; inner layer with conspicuous radial striation, more perceptible at level
of caudal region.
Two dorsal and one ventral body pores present in anterior region, at level of odontostyle.
Lip region offset by constriction, 3.3 times as broad as high and 33% of body diam. at neck base, lips apparently amalgamated, with perioral liplets well marked.
Cheilostom nearly cylindrical.
Odontostyle comparatively long and slender, 1.4 times as long as lip region diam., aperture occupying 16% of length.
Guiding ring double. Esophagus enlarging very gradually to a basal expansionthat occupies 60% of total neck length.
Prerectum 3-4 anal body diam. long. Rectum length about one anal body diam.
Tail 48 um long, conoid with blunt tip and a weak dorsal concavity at its terminus.
Two pairs of caudal pores at middle of tail, one dorsal, one subdorsal.

Note: Lip region and odontostyle morphology very similar to that of Nevadanema nevadense and quite different from those of the genus Labronema

Female:

Genital system didelphic-amphidelphic, both branches equally well developed.
Uterus with abundant sperm..
Vagina extending inwards 40% of body diam.
Vulva a post-equatorial, longitudinal slit.
Two or three minute, irregular, notched membranes present near vulva.

Males: Unknown, but note that sperm observed in uteri of all female specimens.

Ref: adapted from Alvarez-Ortega and Pena-Santiago, 2012

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

Distribution:

Described by Thorne (1939) from the type locality, Bald Mountain, Uinta Range, Utah, USA, where it was collected in soil
around roots of alpine plants, at an elevation of about 3200 m a.s.l.

Feeding:

Labronema and other Labronematinae designated omnivore-predator by Yeates et al (1993).

Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

Ecosystem Functions and Services:

Alvarez-Ortega, S., Pena-Santiago, R. 2012. Nematodes of the order Dorylaimida from Andalucia Oriental, Spain. Nevadanema fimbriatum gen. n., sp. n. (Qudsianematidae) from Sierra Nevada National Park. Nematology 14:249-264.

Thorne, G. 1939. A monograph of the nematodes of the superfamily Dorylaimoidea. Capita Zoologica 8, 1-261.