Simulium


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Related to Simulium: glossina, Chrysops, Culicoides, Simulium damnosum, Simulium venustum

Simulium

(si-mū'lē-ŭm),
A genus of biting gnats or midges, the black flies, humpbacked flies, or buffalo gnats in the dipteran family Simuliidae. The aquatic larvae require swift-flowing streams or highly oxygenated waters for their development, a critical epidemiologic factor in the role of these flies as disease vectors. In Central and South America, Mexico, and across central Africa, various species transmit Onchocerca volvulus, agent of human onchocerciasis.
Synonym(s): Eusimulium
[L. simulo, to simulate]

Simulium

/Si·mu·li·um/ (sĭ-mu´le-um) a genus of biting gnats; some species are intermediate hosts of Onchocerca volvulus.

simulium

(sə-myo͞o′lē-əm)
n.
Any of various black flies of the genus Simulium, several species of which transmit the parasitic filarial worms that cause onchocerciasis.

Simulium

a genus of insects in the family Simuliidae causing insect worry with livestock. Cutaneous lesions may include vesicles and wart-like papules, and edema and petechiation of thin-skinned, ventral areas. Poultry may be affected by anemia. The species also transmits a number of animal diseases including the viruses of vesicular stomatitis and eastern equine encephalomyelitis, the protozoa, Leucocytozoon and Haemoproteus spp., and are intermediate parasites for some Onchocerca spp. Called also black fly, buffalo gnat.
There are a large number of species distinguished largely by their geographic distribution: Simulium arcticum, S. callidum, S. columbaczense, S. damnosum, S. erythrocephalum, S. indicum, S. metallicum, S. neavei, S. ochraceum, S. ornatum, S. pecuarum, S. rugglesi, S. venustum.
References in periodicals archive ?
Simulium guianense in the Jacarei River in Piaui State had 6 instars, which is similar to some species in Argentina and in the USA (e.
Ants in this genus have been observed preying on larvae and pupae of Simulium perflavum Roubaud in a similar situation in the Amazon region (Hamada 1998).
lupi infection ultimately might rely on effective Simulium control programs, which must address black fly breeding in a variety of settings.
In west Africa, Simulium damnosum sensu lato has been reported to prefer biting the lower limbs of the body, therefore, producing high density of nodules and microfilariae at this location (7,8).
The low density of microfilariae in human hosts usually reduces the vectorial potential of the Simulium vectors as the flies need to ingest relatively high number of microfilariae to ensure continuous transmission of infection (2).
Densities of drifting Simulium were variable and there was no apparent relationship with increasing numbers of hikers.
Studies on the Blackflies, Simulium of Imo State, Nigeria: the distribution of immature stages in Isikwuato/Okigwe area.
Longitudinal evaluation of repellency activity of Ocimum gratissimum (Labiatae) volatile oil against Simulium damnosum.
Among blood feeding dipterans, authors have assumed that the spines on the tarsi might be playing the role in contact chemoreception in black flies, Simulium vittatum Zetterstedt and Similium venustum Say (17,19).
volvulus is transmitted primarily by the Simulium damnosum complex (6-9).