EurekaMag
+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Ultrastructure of infective larvae (L3) of Onchocerca volvulus (Nematoda: Filarioidea) developed in Simulium yahense in Liberia


Ultrastructure of infective larvae (L3) of Onchocerca volvulus (Nematoda: Filarioidea) developed in Simulium yahense in Liberia



Journal of Parasitology 83(3): 344-362



ISSN/ISBN: 0022-3395

PMID: 9194812

DOI: 10.2307/3284394

Third-stage infective larvae of Onchocerca volvulus were examined to elucidate the ultrastructure and the interrelations of the stoma, esophagus, intestine, and nervous system. The alimentary canal involves a cuticularized stoma with a triradiate lumen that is continuous with a similar triradiate lumen in the muscular region of the esophagus. The lumen wall may be laterally appressed or opened into a stellate form in the glandular region. Posteriad from the esophagointestinal valve, the cylindroid lumen becomes partially occluded with microvilli formed by the evaginations of the apical membranes of the intestinal epithelium. Cross sections, through this region reveal that groups of 5 radiating epithelial cells are joined near the lumen surface by junctional complexes. The alimentary canal terminates via a rectal valve and channel supported by somatic and neural cells. The central nervous system consists of a nerve ring that surrounds the muscular region of the esophagus. Related neurons support chemoreceptors and tactoreceptors of sensilla and the extensive coelomyarian and meromyarian somatic muscles. Extensive accumulations of glycogen rosettes are present in many of the muscle and hypodermal cells.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 003326004

Download citation: RISBibTeXText

Related references

Fine structure of infective juveniles of Onchocerca volvulus developed in Simulium yahense in Liberia. Journal of Nematology 29(4): 576-577, 1997

Development of Onchocerca volvulus (Filarioidea: Onchocercidae) in the West African black fly Simulium yahense (Diptera: Simuliidae) in Liberia. Journal of Parasitology 87(6): 1265-1272, 2001

Development of Onchocerca volvulus (Filarioidea: Onchocercidae) in the West African Black Fly Simulium yahense (Diptera: Simuliidae) in Liberia. The Journal of Parasitology 87(6): 1265-1272, 2001

Ultrastructure study of the excretory system and the genital primordium of the infective stage of Onchocerca volvulus (Nematoda: Filarioidea). Parasitology Research (1987) 81(5): 403-411, 1995

Diurnal biting activity and transmission of Onchocerca volvulus (Filariata: Onchocercidae) by Simulium yahense (Diptera: Simuliidae) in Liberia. Journal of Medical Entomology 31(2): 217-224, 1994

Infection rates and parasitic loads of Onchocerca volvulus, and other filariae, in Simulium sanctipauli s.I. and S. yahense in a rain-forest area of Liberia. Tropical Medicine and Parasitology 38(3): 201-204, 1987

Effect of mass treatment of a human population with ivermectin on transmission of Onchocerca volvulus by Simulium yahense in Liberia, West Africa. American Journal of Tropical Medicine and Hygiene 42(2): 148-156, 1990

Infection rates and parasitic loads of Onchocerca volvulus, and other filariae, in Simulium sanctipauli s.l. and S. yahense in a rain-forest area of Liberia. Tropical Medicine and Parasitology: Official Organ of Deutsche Tropenmedizinische Gesellschaft and of Deutsche Gesellschaft für Technische Zusammenarbeit 38(3): 201-204, 1987

Failure of Onchocerca gutturosa to develop in Simulium soubrense and Simulium yahense from Liberia. Tropical Medicine and Parasitology: Official Organ of Deutsche Tropenmedizinische Gesellschaft and of Deutsche Gesellschaft für Technische Zusammenarbeit 38(2): 135-136, 1987

Cryopreservation of infective larvae of Onchocerca volvulus (Filarioidea: Onchocercidae). Journal of Parasitology 79(5): 695-700, 1993

Ultrastructural observations on the nervous system and the sensory organs of the infective stage (L3) of Onchocerca volvulus (Nematoda: Filarioidea). Parasitology Research 79(3): 213-220, 1993

Ultrastructural observations on the nervous system and the sensory organs of the infective stage (L3) of Onchocerca volvulus (Nematoda: Filarioidea). Parasitology Research (1987) 79(3): 213-220, 1993

Infective filaria larvae, other than Onchocerca volvulus, in Simulium damnosum. Annals of Tropical Medicine and Parasitology 61(2): 200-205, 1967

Morphological differentiation from Onchocerca volvulus of first stage larvae of an unknown filarial species commonly found in Simulium sanctipauli s.I. in Liberia. Tropical Medicine and Parasitology 36(4): 255-256, 1985

Morphological differentiation from Onchocerca volvulus of first stage larvae of an unknown filarial species commonly found in Simulium sanctipauli s.l. in Liberia. Tropical Medicine and Parasitology: Official Organ of Deutsche Tropenmedizinische Gesellschaft and of Deutsche Gesellschaft für Technische Zusammenarbeit 36(4): 255-256, 1985