Syphacia maxomyos		Contents		Rev 12-12-2024
Pinworm; Threadworm		Classification
		Morphology and Anatomy		Life Cycle
Return to Syphacia Menu		Distribution		Ecosystem Functions and Services
		Feeding		Management
Return to Oxyuridae Menu		Biology and Ecology		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea
Chromadoria

           Rhabditida 

                       Spirurina

                          Oxyuroidea

                   Oxyuridae

Syphaciinae

 

            Syphacia maxomyos Dewi, Hasegawa, Fitriana & Asakawa, 2015

Back to Top

Morphology and Anatomy:

General characteristics:

• Small nematodes; generally between 1 and 5 mm long
• Cuticle with fine transverse striations;
• Cephalic vesicle well developed,
• Mouth opening triradiate, surrounded by 3 protruded lips, dorsal lip smaller than subventrals
• Submedian papillae and amphid at each lateral side of cephalic plate;
• Cervical alae absent;
• Esophagus club-shaped with posterior bulb with valvular apparatus.
• Excretory pore posterior to esophago-intestinal junction
• Male with ventral cuticular swellings - mamelons

Male:

• Lateral alae as slight cuticular thickenings with median furrow;
• Three mamelons at ventral posterior body; first mamelon 67um long, second 61 um long and third mamelon 85 um long
• Monorchic, testis reflexed mamelon, about 535um from head end.
• Spicule single, relatively short, thin, needle-shaped, slightly constricted at 1/3 length
• Gubernaculum, with relatively large, unornamented accessory piece
• Caudal papillae 3 pairs: 2 pairs small, near cloaca and 1 pair large, postanal, protruding posterolaterally;
• Tail 16% of total body length, taperingto a whip-like process.

Female:

• Body relatively stout;
• Lateral alae absent;
• Vulva protruding and surrounded by smooth cuticle,
• Distance between excretory pore and vulva short, 3.2% of TBL
• Eggs ellipitical, asymmetrical with one side flattened, both poles rounded, operculum reaching polar end, surface not
  pitted,
• Tail long, tapering to pointed end, 20.7% of TBL.

Ref: Dewi et al., 2015

Back to Top

Distribution:

Described from type host Maxomys musschenbroekii (Musschenbroek's spiny rat) from Sulawesi, Indonesia

Back to Top

Feeding:

Back to Top

Hosts:

Considered to have evolved with their hosdts and to be host-genus specific. Known hosts are Maxomys musschenbroekii (Musschenbroek's spiny rat)  and Maxomys whiteheadi (Dewi et al., 2015, Hugot, 1988)

Back to Top

Life Cycle:

Ecophysiological Parameters:

Back to Top

Copyright  1999 by Howard Ferris.
Revised: December 12, 2024.