Maxomystrongylus yasumai

Maxomystrongylus yasumai	Contents	Rev: 10/19/2024
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Maxomystrongylus Menu	Economic Importance	Ecosystem Functions and Services
	Distribution	Management
Return to Helligmonellidae Menu	Feeding	References
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Classification:

Chromadorea
Chromadoria

Rhabditida
Rhabditina
Infraorder Rhabditomorpha
Heligmosomoidea: Helligmonellidae
Nippostyrongylinae
Maxomystrongylus yasumai Hasegawa & Syaffrudin 1997

Synonyms:

Morphology and Anatomy:

With general characteristics of the genus
Small nematodes forming sinistral ventral coils.
Cephalic vesicle present
Esophagus club-shaped; nerve ring at anterior to middle of esophagus; excretory pore and deirids slightly posterior to middle of esophagus
Mouth triangular, surrounded by 4 cephalic papillae, 6 minute externolabial papillae and amphidial pores
Cuticle with fine transverse striations.
Synlophe ridges extending from berhind cephalic vesicle to level of prebursal papillae in male and level of sphincter in female. Inclination of synlophe ridges from sagittal axis 30 degr. at esophageal level, 50 degr. at anterior intestinal level and 70Â° in middle and posterior body. Ridges becoming minute, without clear axis of orientation at level anterior to prebursal papillae of male .

	Females: Monodelphic, prodelphic Vulva posterior, 110um from tail terminus Vagina vera with elongated right side forming horn-shaped diverticulum Tail conical with moderately pointed terminus.

Males: Bursa asymmetrical: dorsoventral height larger in right lobe and lateral width much larger in left lobe, and dorsal and ventral incisions present; Ray 1 minute, at level of gubernaculum). Bursal rays characteristic of species (see refernce source for details).. Spicules equal length, alate, joined at distal ends and abruptly bent dorsally, about 14% of body length Ref: Hasegawa and Syaffrudin, 1997
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

Distribution:

Collected from the small intestine of Maxomys whiteheadi (Rodentia: Muridae) from East Kalimantan, Indonesia. Also from Rattus rattus diardii and Niviventer cremoniventer in the same locality.

Feeding:

Intestinal parasites of parasites of murines. rodents of the family Muridae, Old World rats and mice.

Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

Ecosystem Functions and Services:

Hasegawa, H. and Syaffrudin 1997. Maxomystrongylus yasumai gen. and sp. n. (Nematoda: Trichostrongylina: Heligmonellidae) Collected from Murid Rodents in Kalimantan, Indonesia. J. Helminthol. Soc. Wash. 64:263-268.