Labiobulura		Contents		Rev: 07/07/2025
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Labiobulura Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Subuluridae Menu		Feeding		References
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Classification:

Chromadoreahromadoria

           Rhabditida 

                       Spirurina

                         Subuluroidea

                   Subuluridae

Labiobulurinae

 

            Labiobulura Skrjabin & Schikhobalova, 1948

Type species of the genus: Labiobulura peramelis (Baylis, 1930) Skrjabin & Schikhobalova, 1948

    Synonyms:

Subulura Molin, 1860

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Morphology and Anatomy:

Two subgenera may be recognized: Arcaeobulura Quentin, 1969 and Labiobulura Quentin, 1969

• Relatively large robust nematodes
• Hexagonal mouth opening surrounded by six labial lobes, with or without six interlabial lobes
• Amphids associated with the lateral lobes
• Cylindrical buccal cavity and elaborations of the anterior part of the esophagus form a buccal apparatus
• Esophagus with an elongated clavate corpus narrowing abruptly to a short isthmus terminating in a subglobular bulb
• Cervical alae extending the length of the esophageal region.

Ref: Inglis 1958, 1960; Smales, 2009.

Labiobulura peramelis 64: male anterior; 65: cephalic end, en face; cephalic end, lateral view; 66: cephalic end dorso-ventral view; 67:  cephalic end lateral view Scale bars: 65=25 um; 66,67=50 um Drawings from Smales, 2009

Males:

• With an elongated muscular pre-cloacal sucker without cuticular support
• 11 pairs of caudal papillae in each species; three pairs pre-cloacal, two pairs cloacal and six pairs post-cloacal, four pairs of which are near the tail tip.

Females:

• Vulva in anterior half of body
• Tail simple, conical

Distribution:

The genus Labiobulura parasitizes the caecum and colon of bandicoots (Peramelidae) and bilbies (Thylacomyidae) from Australia and an endemic species of rodent, Leptomys (Muridae; Murinae), from Papua New Guinea (Smales, Citation2009).

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Feeding:

Food Sources and Feeding strategies for the genus Labiobulura

The genus occurs in the posterior region of the small intestine, caecum and colon of bandicoots (Peramelidae) and bilbies (Thylacomyidae), marsupials from Australia and also in an endemic rat (Murinae, Hydromyini) from Papua New Guinea

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Biology and Ecology:

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Life Cycle:

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Ecosystem Functions and Services:

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Management:

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References:

Inglis, W.G. 1958. The comparative anatomy of the subulurid head (Nematoda): with a consideration of its systematic importance. Proceedings of the Zoological Society of London 130: 577-04.