Sinistral, Dextral, and Mixed Coiling Patterns Observed in Heligmonellid Nematodes (Trichostrongyloidea).
J Parasitol
; 105(1): 41-44, 2019 02.
Article
em En
| MEDLINE
| ID: mdl-30807711
ABSTRACT
Coiling 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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças dos Roedores
/
Heligmosomatoidea
/
Murinae
/
Intestinos
/
Microvilosidades
Limite:
Animals
País/Região como assunto:
Asia
Idioma:
En
Revista:
J Parasitol
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Japão