Nagelus borealis

Nagelus borealis	Contents	Rev 12/16/2024
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Nagelus Menu	Economic Importance	Damage
	Distribution	Management
Return to Merliniidae Menu	Feeding	References
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Classification:

Chromadorea Rhabditida Tylenchina Tylenchoidea
Merliniidae
Merliniinae

Nagelus borealis Powers, Baldwin & Bell, 1983

Synonyms

Morphology and Anatomy:

Female:

Body c-shaped when relaxed and fixed.
Lip region slightly offset, consisting of 7 annules without longitudinal striae.
Amphid apertures within first lip annule.
Lateral field starting at level of stylet knobs; intially 4 incisures and becoming 6 incisures slightly anterior to conspicuous deitids.
Stylet well developed, rounded knobs with anterior surface sloping posteriorly.
Metacorpus of esophagus elongate, cylindrical, butting into intestine.
Didelphic, amphidelphic, ovaries otstretch
Spermatheca in line with genital tract, sperm rounded.
Large double epiptygma.
Tail conoid with irregular teminus.

Male:

Body morphology similar to female
Gubernaculum present.
Bursa envelopes tail terminus

Ref: Powers et al., 1983

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

Distribution:

Described from alpine tundra of grasses and mosses, Alaska, USA.

Feeding:

A migratory ectoparasite of plant roots.

Hosts:

For an extensive host range list for this species, click

Life Cycle:

Ecophysiological Parameters:

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

Management:

For plants reported to have some level of resistance to this species, click

References:

Geraert, E. 2011. The Dolichodoridae of the World. Identification of the family Dolichodoridae. Academia Press, Ghent, Belgium. 520p.

Powers, T.O., Baldwin, J.G., Bell, A.H. 1983. Taxonomic limits of the genus Nagelus (Thorne and Malek, 1968, Siddiqi, 1979 with a description of Nagelus borealis n.sp. from Alaska. J. Nematology 15:582-593.

Siddiqi, M.R. (2000). Tylenchida: parasites of plants and insects, 2nd edition. Wallingford, UK, CAB InternationalGeraert, E. 2011. The Dolichodoridae of the World. Identification of the family Dolichodoridae. Academia Press, Ghent, Belgium. 520p.Powers, T.O., Baldwin, J.G., Bell, A.H. 1983. Taxonomic limits of the genus Nagelus (Thorne and Malek, 1968, Siddiqi, 1979 with a description of Nagelus borealis n.sp. from Alaska. J. Nematology 15:582-593.