Paramacropostrongylus		Contents		Rev 10/04/2024
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Paramacropostrongylus menu				Ecosystem Functions and Services
		Distribution		Management
Return to Chabertiidae Menu		Feeding		References
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Classification

Phylum:  Nematoda
Class:    Chromadorea

Chromadoria

Order:    Rhabditida 

Superfamily:  Strongyloidea

Family:  Chabertiidae

Subfamily: Phascolostrongylinae

Paramacropostrongylus Johnston & Mawson, 1940

Type species of the genus  Paramacropostrongylus typicus Johnston & Mawson, 1940

Synonyms:

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Morphology and Anatomy:

Paramacropostrongylus differs from Macropostrongyloides principally in the absence of four large teeth on the walls of the buccal capsule. Also, the external knob present on the dorsal wall of the buccal capsule in Macropostrongyloides is absent in Paramacropstrongylus. The arrangement of the duct of the dorsal esophageal gland is similar in both genera and both taxa have denticles around ythe opening of the buccal capsule (Beveridge and Mawson, 1978).,

General characteristics of Paramacropostrongylus:

• Large nematodes, 30-50 mm long.
•  Oral opening oval, cephalic collar prominent, surrounding oral opening, pierced by 4 submedian papillae and 2 amphids.
• Buccal capsule thick-walled, subcylindrical; anterior rim with 12-20 triangular denticles. Capsule wall traversed dorsally by duct of dorsal oesophageal gland, continued anteriorly as Y-shaped groove in internal surface of capsule, branches meeting ventrally.
• Teeth absent from buccal capsule.
• Esophagus clavate. 

Male:

•  Spicules long, alate,
• Gubernaculum present.
• Bursa with ventroventral and ventrolateral rays fused. Externolateral ray divergent from lateral trunk. Externodorsal ray arising from dorsal ray or separately. Dorsal ray bifurcate, each branch bifurcate terminally.

Female:

• Tail short, conical, vulva close to anus.
• Vagina Y-shaped or T-shaped. Uteri paired, sac-like, prodelphic.
• Egg ellipsoidal, thin-shelled.
• .

Ref: Beveridge and Mawson, 1978

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

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Distribution

Australia: Victoria, New South Wales, Queensland.

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Economic Importance:

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Hosts:

Parasites of stomach and caecum of herbivorous macropodid marsupials

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Feeding

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Life Cycle:

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Damage:

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Management:

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References:

Beveridge, I., Mawson, P.M. 1978. A Taxonomic Revision of the Genera Macropostrongyloides Yamaguti and Param~cropostrongylus Johnston & Mawson (Nematoda : Trichonematidae) from Australian Marsupials. Australian J. Zoology 26:763-787.

Beveridge, I., Spratt, D.M.  and Durette-Desset, M-C. 2014. Order Strongylida (Railliet and Henry, 1913). In Schmidt-Raesa, A. (ed). Handbook of Zoology: Gastroctricha, Cycloneurelia and Gnathifera. Vol 2. Nematoda. De Gruyter, Berlin

Johnston, T.H., and Mawson, P.M. 1940. Nematodes from South Australia. Trans. R. Soc. S. Auatralia. 64: 95-100.

Sukee, T.; Beveridge, I.; Jabbar, A. 2021. Torquenema n. g., Wallabicols n. g., and Macropostrongyloides phascolomys n. sp.: New Genera and a New Species of Nematode (Strongylida: Phascolostrongylinae) Parasitic in Australian Macropodid and Vombatid Marsupials. Animals 2021, 11, 175. https://doi.org/ 10.3390/ani11010175

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