Spiruria
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Spiruria
Spirurina is a suborder of nematode worms in the order Rhabditida. Spirurina contains a diverse group of worms that inhabit soil, water, and other bodies of organism. Footnotes References * Bowman, D. D. (2014). Georgis' parasitology for veterinarians. Elsevier Health Sciences. * Hawdon, J. M., & Schad, G. A. (1990). Trichinella and trichinosis. Oxford University Press. Spirurina, Parasitic nematodes of mammals Ecdysozoa subclasses {{parasitic animal-stub ...
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Spirurina
Spirurina is a suborder of nematode The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (h ... worms in the order Rhabditida. Spirurina contains a diverse group of worms that inhabit soil, water, and other bodies of organism. Footnotes References * Bowman, D. D. (2014). Georgis' parasitology for veterinarians. Elsevier Health Sciences. * Hawdon, J. M., & Schad, G. A. (1990). Trichinella and trichinosis. Oxford University Press. Parasitic nematodes of mammals Ecdysozoa subclasses {{parasitic animal-stub ...
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Nematode
The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (helminths) are the cause of soil-transmitted helminthiases. They are classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa. Unlike the flatworms, nematodes have a tubular digestive system, with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species are uncertain. A 2013 survey of animal biodiversity suggested there are over 25,000. Estimates of the total number of extant species are su ...
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Microfilaria
The microfilaria (plural microfilariae, sometimes abbreviated mf) is an early stage in the life cycle of certain parasitic nematodes in the family Onchocercidae. In these species, the adults live in a tissue or the circulatory system of vertebrates (the "definitive hosts"). They release microfilariae into the bloodstream of the vertebrate host. The microfilariae are taken up by blood-feeding arthropod vectors (the " intermediate hosts"). In the intermediate host the microfilariae develop into infective larvae that can be transmitted to a new vertebrate host. The presence of microfilariae in the host bloodstream is called "microfilaraemia". The success of filariasis eradication programs is typically gauged by the reduction in numbers of circulating microfilariae in infested individuals within a geographic area. ''Microfilaria'' may also refer to an informal "collective group" genus name, proposed by Cobbold in 1882. While a convenient category for newly discovered microfilari ...
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Mansonella Perstans
''Mansonella perstans'' is a filarial (arthropod-borne) nematode (roundworm), transmitted by tiny blood-sucking fly, flies called midges. ''Mansonella perstans'' is one of two filarial nematodes that causes serous cavity filariasis in humans. The other filarial nematode is ''Mansonella ozzardi''. ''M. perstans'' is widespread in many parts of sub-Saharan Africa, parts of Central America, Central and South America, and the Caribbean. Compared to infections with other filarial parasites such as ''Wuchereria bancrofti'', ''Brugia malayi'', and ''Loa loa'', ''Mansonella'' infections are relatively mild. However, the pathogenicity of ''M. perstans'' infection has been recently reconsidered in various studies. These studies have demonstrated that ''M. perstans'' has the ability to induce a variety of clinical features, including angioedema Calabar-like swellings, pruritus, fever, headache, eosinophilia, and abdominal pain. The overall disability among populations in regions where ...
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Loa Loa
''Loa loa'' is a filarial (arthropod-borne) nematode (roundworm) that causes Loa loa filariasis, ''Loa loa'' filariasis. ''Loa loa'' actually means "worm worm", but is commonly known as the "eye worm", as it localizes to the conjunctiva of the eye. ''Loa loa'' is commonly found in Africa.Schmidt, Gerald et al. "Foundations of Parasitology". 7th ed. McGraw Hill, New York, NY, 2005. It mainly inhabits rain forests in West Africa and has native origins in Ethiopia. The disease caused by ''Loa loa'' is called loiasis and is one of the neglected tropical diseases. ''L. loa'' is one of three parasitic filarial nematodes that cause Subcutaneous tissue, subcutaneous filariasis in humans. The other two are ''Mansonella streptocerca and Onchocerca volvulus'' (causes river blindness). Maturing larvae and adults of the "eye worm" occupy the subcutaneous layer of the skin – the fat layer – of humans, causing disease. The ''L. loa'' adult worm which travels under the skin can survive ...
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Filariidae
Filariidae is a family of nematodes belonging to the order Rhabditida Rhabditida is an order of free-living, parasitic and microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, and Strongyloididae seem to be closer to the Tylenchia, regardless of whether these are merg .... Genera References {{Authority control Rhabditida Nematode families ...
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Rhabditida
Rhabditida is an order of free-living, parasitic and microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, and Strongyloididae seem to be closer to the Tylenchia, regardless of whether these are merged with the Rhabditia or not.Tree of Life Web Project (2002b)Nematoda Version of 2002-JAN-01. Retrieved 2008-NOV-02. Families Rhabditida * Myolaimina **''Incertae sedis'' *** Myolaimoidea **** Myolaimidae * Rhabditina ** Bunonematomorpha *** Bunonematoidea **** Bunonematidae ** Diplogasteromorpha *** Cylindrocorporoidea ****Cylindrocorporidae *** Diplogasteroidea ****Cephalobiidae ****Diplogasteridae ****Diplogasteroididae ** Rhabditomorpha *** Mesorhabditoidea ****Peloderidae *** Rhabditoidea **** Rhabditidae *Spirurina ** Ascaridomorpha *** Ascaridoidea **** Acanthocheilidae ****Anisakidae **** Ascarididae **** Heterocheilidae **** Raphidascarididae *** Cosmocercoidea **** Atractidae **** Kathlaniidae *** Seuratoidea **** Cucullanidae * ...
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Parasitic Nematodes Of Mammals
Parasitism is a close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson characterised parasites' way of feeding as "predators that eat prey in units of less than one". Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes. There are six major parasitic strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), trophicallytransmitted parasitism (by being eaten), vector-transmitted parasitism, parasitoidism, and micropredation. One major axis of classification concerns invasiveness: an endo ...
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