Passeristrongylus

Passeristrongylus	Contents	Rev: 03/24/2026
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Passeristrongylus Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Ornithostrongylidae Menu	Feeding	References
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Classification:

Chromadoria
Rhabditida: Rhabditina
Infraorder Rhabditomorpha
Heligmosomoidea: Ornithostrongylidae
Ornithostrongylinae

Passeristrongylus Jansen, 1985
Type species of the genus: Passeristrongylus amandavae Jansen, 1985

Synonyms:

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Morphology and Anatomy:

Based on description of the type species:

Mouth capsule rudimentary; perhaps with a small single tooth
Head vesicle transversally striated head vesicle
Che cuticle with several longitudinal ridges; striated area from behind the head vesicle to the tail end in the female and near the copulatory bursa in the male.
Cuticular ridges, most conspicuous on the right side and run obliquely in the direction of the lateral cords w
Synlophe poorly developed with 16 to 20 longitudinal ridges on the right side of the worm, the axis pointing from right to left

Females:

Didelphic.
Vulva at about 70% of body length
Ovejectors weakly developed.
Eggs in utero about 80 x 50 um
Tail conical tail, 0.160-0.203 um long

Ref: Jansen, 1985

Males:

Spicules with three branches, one branch is directed distally with a proximally curving offshoot, another branch is recurved and the third is straight; spicule ends folded in a transparent membrane.
Gubernaculum absent
Copulatory bursa with one large cuticular fold laterally and dorsally. Prebursal papillae not seen; ventral rays almost equal, bending slightly ventrally and diverging distally: lateral rays almost equal and diverging from each other; externo-dorsal ray slender, arising from the same trunk as the dorsal ray; dorsal ray short, Bursa formula close to 2-1-2 per Durette-Desset & Chabaud (1981).

Body size range for the species of this genus in the database - Click:

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Distribution:

Type species described from the small intestine of a golden-breasted waxbill, Amandava subflava. The bird had been recently imported from Africa.

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Feeding:

Food Sources and Feeding strategies for the genus Passeristrongylus

Type species a parasite of the small intestine of a golden-breasted waxbill, Amandava subflava

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Biology and Ecology:

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Life Cycle:

For Ecophysiological Parameters for this genus, click

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Ecosystem Functions and Services:

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Management:

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References:

Durette-Desset, M-C, and Chabaud, A.G. 1981 Nouvel essai de classification des nematodes Trichostrongyloidea. Annales de Parasitologie. humaine et comparee, 56:297-312.

Jansen, J. 1985. Passeristrongylus amandavae n. g., n. sp. (Nematoda: Trichostrongyloidea) from the small intestine of the passeriform bird Amandava subflava. Systematic Parasitology 7:291-294.

Passeristrongylus

Copyright © 1999 by Howard Ferris. Revised: March 24, 2026.

Copyright © 1999 by Howard Ferris.
Revised: March 24, 2026.