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Sinistral, Dextral, and Mixed Coiling Patterns Observed in Heligmonellid Nematodes (Trichostrongyloidea)

Sinistral, Dextral, and Mixed Coiling Patterns Observed in Heligmonellid Nematodes... ABSTRACTCoiling patterns of heligmonellid nematodes were examined for 520, 208, and 33 individuals of Nippostrongylus brasiliensis, Orientostrongylus tenorai, and Sabanema sp., respectively, collected from murine rodents of Indonesia. Besides typical sinistral coiling, complete dextral coiling was found in 3.3 of N. brasiliensis and 12.1 of Sabanema sp. Mixed coiling with partial sinistral and dextral patterns was also observed in 38.8 of N. brasiliensis, 60.7 of Sabanema sp., and 3.4 of O. tenorai. In dextral coils, the left ventral area with large ridges was located inside as in sinistral coils, keeping the ability to cling to intestinal villi. The cuticular dilatation at left to left dorsal area was located caudally in sinistral coils but rostrally in dextral coils. Presence of mixed coiling indicates that the coiling patterns can change. As the transition of coiling pattern accompanies a change in direction of coil axis, it is surmised that the dextral coiling may be chosen when a worm leaves a villus to move to another villus. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Parasitology Allen Press

Sinistral, Dextral, and Mixed Coiling Patterns Observed in Heligmonellid Nematodes (Trichostrongyloidea)

The Journal of Parasitology , Volume 105 (1): 4 – Feb 1, 2019

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References (8)

Publisher
Allen Press
Copyright
American Society of Parasitologists 2019
ISSN
0022-3395
eISSN
1937-2345
DOI
10.1645/18-82
Publisher site
See Article on Publisher Site

Abstract

ABSTRACTCoiling patterns of heligmonellid nematodes were examined for 520, 208, and 33 individuals of Nippostrongylus brasiliensis, Orientostrongylus tenorai, and Sabanema sp., respectively, collected from murine rodents of Indonesia. Besides typical sinistral coiling, complete dextral coiling was found in 3.3 of N. brasiliensis and 12.1 of Sabanema sp. Mixed coiling with partial sinistral and dextral patterns was also observed in 38.8 of N. brasiliensis, 60.7 of Sabanema sp., and 3.4 of O. tenorai. In dextral coils, the left ventral area with large ridges was located inside as in sinistral coils, keeping the ability to cling to intestinal villi. The cuticular dilatation at left to left dorsal area was located caudally in sinistral coils but rostrally in dextral coils. Presence of mixed coiling indicates that the coiling patterns can change. As the transition of coiling pattern accompanies a change in direction of coil axis, it is surmised that the dextral coiling may be chosen when a worm leaves a villus to move to another villus.

Journal

The Journal of ParasitologyAllen Press

Published: Feb 1, 2019

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