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Ornithodoros

Genus of arachnids

Summary

Genus of arachnids

Microargas Hoogstraal & Kohls, 1966
Ornamentum Clifford, Kohls, & Sonenshine, 1964
Pavlovskyella Klompen & Oliver, 1993
Theriodoros Pospelova-Shtrom, 1950

Ornithodoros is a genus in the soft-bodied tick family, Argasidae. It is distinguished from other genera in the family by the absence of a lateral 'suture' line. Ornithodoros ticks are parasitic associates of shelter-seeking vertebrates, such as mammals, birds and reptiles.

Prior to its reclassification in 1844, the genus Ornithodoros was described under the genus Argas.

Physiology

The opening between the midgut and hindgut has been lost, preventing these ticks from excreting digestive waste products from their bodies.

Habitat

The genus Ornithodoros have been documented worldwide, with the highest occurrence in the Paleartic realm.

Life cycle

The life cycle of all species of Ornithodoros is parasitic and relies on one or multiple hosts, most of which are shelter-seeking vertebrates, and can also parasitize humans. Mating and moulting occur in close proximity to sites frequented by the hosts, such as nests. Once a larva hatches, it seeks out a host for its first meal of blood. After feeding for several hours to days, it detaches and molts into a nymph. The nymph will then reattach to a host and repeat the cycle for up to seven instars. Once it reaches adulthood, it continues to feed on the hosts multiple times.

Some Ornithodoros species can reproduce multiple times and may also exhibit autogeny. The life span of some species may extend up to ten years.

Disease

Due to their status as obligate hematophages, Ornithodoros ticks are constantly exposed to blood-borne pathogens. When feeding on a host, small amounts of their saliva may enter the host and transmit infections. Ornithodoros is commonly recognized as a vector for tick-borne relapsing fever. In addition to transmitting bacteria such as Borrelia, it is also responsible for causing relapsing fever. Species of Ornithodoros are also known to transmit the African Swine Fever Virus, which causes African swine fever in pigs or other closely related animals such as wild boars.

Taxonomy

Ornithodoros is one of nine genera in the Argasid subfamily Ornithodorinae. The genus currently contains 48 species over 4 subgenera.

''Microargas''

O. (Microargas) transversus Banks, 1902

''Ornamentum''

O. (Ornamentum) coriaceus Koch, 1844

''Ornithodoros''

O. (Ornithodoros) apertus Walton, 1962
O. (Ornithodoros) compactus Walton, 1962
O. (Ornithodoros) eremicus Cooley and Kohls, 1941
O. (Ornithodoros) indica Rau and Rao, 1971
O. (Ornithodoros) kalahariensis Bakkes, de Klerk and Mans, 2018
O. (Ornithodoros) moubata (Murray, 1877)
O. (Ornithodoros) noorsveldensis Bakkes, de Klerk and Mans, 2018
O. (Ornithodoros) pavimentosus Neumann, 1901
O. (Ornithodoros) phacochoerus Bakkes, de Klerk and Mans, 2018
O. (Ornithodoros) porcinus Walton, 1962
O. (Ornithodoros) procaviae Theodor and Costa, 1960
O. (Ornithodoros) savignyi (Audouin, 1826)
O. (Ornithodoros) waterbergensis Bakkes, de Klerk and Mans, 2018

''Pavlovskyella''

O. (Pavlovskyella) alactagalis Issaakjan, 1936
O. (Pavlovskyella) arenicolous Hoogstraal, 1953
O. (Pavlovskyella) asperus Warburton, 1918
O. (Pavlovskyella) brasiliensis Aragão, 1923
O. (Pavlovskyella) cholodkovskyi Pavlovsky, 1930
O. (Pavlovskyella) cooleyi McIvor, 1941
O. (Pavlovskyella) costalis Diatta, Bouattour, Durand, Renaud and Trape, 2013
O. (Pavlovskyella) erraticus (Lucas, 1849)
O. (Pavlovskyella) furcosus Neumann, 1908
O. (Pavlovskyella) graingeri Heisch and Guggisberg, 1953
O. (Pavlovskyella) grenieri Klein, 1965
O. (Pavlovskyella) hermsi Wheeler, Herms and Meyer, 1935
O. (Pavlovskyella) kairouanensis Trape, Diatta, Bouattour, Durand and Renaud, 2013
O. (Pavlovskyella) marocanus Velu, 1919
O. (Pavlovskyella) merionesi Trape, Diatta, Belghyti, Sarih, Durand and Renaud, 2013
O. (Pavlovskyella) nattereri Warburton, 1927
O. (Pavlovskyella) nicollei Mooser, 1932
O. (Pavlovskyella) normandi Larrousse, 1923
O. (Pavlovskyella) occidentalis Trape, Diatta, Durand and Renaud, 2013
O. (Pavlovskyella) papillipes (Birula, 1895)
O. (Pavlovskyella) parkeri Cooley, 1936
O. (Pavlovskyella) rostratus Aragão, 1911
O. (Pavlovskyella) rupestris Trape, Bitam, Renaud and Durand, 2013
O. (Pavlovskyella) sonrai Sautet and Witkowski, 1943
O. (Pavlovskyella) sparnus Kohls and Clifford, 1963
O. (Pavlovskyella) tartakovskyi Olenev, 1931
O. (Pavlovskyella) tholozani (Laboulbène and Mégnin, 1882)
O. (Pavlovskyella) turicata (Dugès, 1876)
O. (Pavlovskyella) verrucosus Olenev, Zasukhin and Fenyuk, 1934
O. (Pavlovskyella) zumpti Heisch and Guggisberg, 1953

Else, for O. (Pavlovskyella) macmillani Hoogstraal and Kohls, 1966 see Apanaskevichiella. For O. (Pavlovskyella) gurneyi Warburton, 1926 see Australpavlovskyella

Etymology

The Linnean name derives from ornithos () and doros (), meaning "bird" and "gift", respectively.

References

Mans, Ben J.. (2021-07-01). "Nuclear (18S-28S rRNA) and mitochondrial genome markers of Carios (Carios) vespertilionis (Argasidae) support Carios Latreille, 1796 as a lineage embedded in the Ornithodorinae: re-classification of the Carios sensu Klompen and Oliver (1993) clade into its respective subgenera". Ticks and Tick-borne Diseases.
(August 2024). "Description of a new Ornithodoros ( Pavlovskyella ) (Ixodida: Argasidae) tick species from Pakistan". Parasitology.
(2017). "Genus Ornithodoros Koch, 1844". Springer International Publishing.
(November 2024). "Description of Ornithodoros (Pavlovskyella) tartakovskyi using scanning electron microscopy, with notes on the morphology of Pavlovskyella sensu stricto and Theriodoros subgenera". Ticks and Tick-borne Diseases.
(2009). "Foundations of Parasitology". McGraw-Hill.
(December 31, 2017). "Ticks".
(June 2021). "Ticks infesting dogs and cats in North America: Biology, geographic distribution, and pathogen transmission". Veterinary Parasitology.
(2023-11-29). "Autogenous reproduction by Ornithodoros turicata (Ixodida: Argasidae) females and vertical transmission of the tick-borne pathogen Borrelia turicatae (Spirochaetales: Borreliaceae )". Applied and Environmental Microbiology.
(May 15, 2024). "About Ticks and Tickborne Disease".
(December 2020). "Differential vector competence of Ornithodoros soft ticks for African swine fever virus: What if it involves more than just crossing organic barriers in ticks?". Parasites & Vectors.
Mans, Ben J.. (2019-01-01). "Argasid and ixodid systematics: Implications for soft tick evolution and systematics, with a new argasid species list". Ticks and Tick-borne Diseases.

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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