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Spirocerca
''Spirocerca'' is a genus of nematodes belonging to the family Spirocercidae. The genus has cosmopolitan distribution. Species: *'' Spirocerca arctica'' *''Spirocerca lupi Epidemiology ''S. lupi'' is endemic (occurs naturally) from southern Africa all the way up to Israel, Turkey, Greece and India; faecal evidence also exists for it in the southern USA. Although early reports of the disease were American 1-3, few ...'' References {{Taxonbar, from=Q18520309 Nematodes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirocerca Lupi
Epidemiology ''S. lupi'' is endemic (occurs naturally) from southern Africa all the way up to Israel, Turkey, Greece and India; faecal evidence also exists for it in the southern USA. Although early reports of the disease were American 1-3, few reports emerge any longer from this country. This may be because a commonly-used insecticide wiped out a lot of the hosts, before being banned – so never reached Israel or SA (anecdotal). This parasite has a complex 110-day life cycle with both intermediate and paratenic (=transport) hosts. Coprophagous (“dung”) beetles are the intermediate hosts, ingesting the eggs which contain the L1 larvae. Within this host, the eggs encysts and develop into the infectious L3 larvae in 2 months. The infectious process can be direct (ingestion of an infected beetle) or indirect (ingestion by a paratenic host such as wild birds and poultry, lizards and rodents, rabbits and even hedgehogs). Thus both lizards and bird offal may be important sourc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirocerca Arctica
''Spirocerca'' is a genus of nematodes belonging to the family Spirocercidae. The genus has cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext .... Species: *'' Spirocerca arctica'' *'' Spirocerca lupi'' References {{Taxonbar, from=Q18520309 Nematodes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematodes
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems 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 described to date vary by author and may change rapidly over time. A 2013 survey of animal biodiversity published in the mega jo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirocercidae
Spirocercidae is a family of nematodes belonging to the order Spirurida. Genera Genera: * ''Ascarops ''Ascarops'' is a genus of nematodes belonging to the family Spirocercidae Spirocercidae is a family of nematodes belonging to the order Spirurida Spirurida is an order of spirurian nematodes. Like all nematodes, they have neither a circu ...'' van Beneden, 1873 * '' Cyathospirura'' Baylis, 1934 * '' Didelphonema'' Wolfgang, 1953 References {{Taxonbar, from=Q21293698 Nematodes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmopolitan Distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The extreme opposite of a cosmopolitan species is an endemic one, being found only in a single geographical location. Qualification The caveat “in appropriate habitat” is used to qualify the term "cosmopolitan distribution", excluding in most instances polar regions, extreme altitudes, oceans, deserts, or small, isolated islands. For example, the housefly is highly cosmopolitan, yet is neither oceanic nor polar in its distribution. Related terms and concepts The term pandemism also is in use, but not all authors are consistent in the sense in which they use the term; some speak of pandemism mainly in referring to diseases and pandemics, and some as a term intermediate between endemism and cosmopolitanism, in effect regarding pandemism as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
