Hirudo

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Hirudo
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Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Annelida
Class: Clitellata
Subclass: Hirudinea
Order: Arhynchobdellida
Family: Hirudinidae
Genus: Hirudo
Linnaeus, 1758
Type species
Hirudo medicinalis [1]
Linnaeus, 1758

Hirudo is a genus of leeches of the family Hirudinidae. It was described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae. [2]

Contents

The two well-accepted species within the genus are: [3]

Three other species, previously synonymized with H. medicinalis, were described in 2005 and are gaining acceptance: [3] [4] [5]

Description

Species are typically exterior feeders. They have jaws that typically consist of about 60 teeth and do not possess papillae. [6]

Distribution

Hirudo medicinalis: Britain and southern Norway to the southern Urals, probably as far as the Altai Mountains (the deciduous arboreal zone) [7]
Hirudo verbana: Switzerland and Italy to Turkey and Uzbekistan (the Mediterranean and sub-boreal steppe zone) [7]
Hirudo orientalis: Transcaucasian countries, Iran, and Central Asia (mountainous areas in the sub-boreal eremial zone) [7]
Hirudo sulukii: Kara Lake of Adiyaman, Sülüklü Lake of Gaziantep and Segirkan wetland of Batman in Turkey [5]
Hirudo troctina: North-western Africa and Spain (Mediterranean zone) [7]
Hirudo nipponia: East Asia, including Far East district in Russian, Japan, Korea, China, Mongolia, Ryukyu Islands and Taiwan [8]
Hirudo tianjinensis: China [9]

Hirudo verbana is further divided into nonoverlapping eastern and western phylogroups. [10]

Medical use

While H. medicinalis has long been used in hirudotherapy, and is approved by the US FDA as a prescription medical device, a 2007 study employing genetic analysis found that the species being marketed as H. medicinalis, possibly for decades, was the recently distinguished H. verbana. [11]

Conservation status

A 2010 study of data gathered four species proposed an IUCN status of near threatened for H. medicinalis, H. verbana, and H. orientalis, and a status of data deficient for H. troctina. [7]

Related Research Articles

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Hirudo medicinalis, the European medicinal leech, is one of several species of leeches used as "medicinal leeches".

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<span class="mw-page-title-main">Haemadipsidae</span> Family of land leeches

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<span class="mw-page-title-main">Euhirudinea</span> True leeches

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<span class="mw-page-title-main">Hirudiniformes</span> Suborder of annelid worms

The Hirudiniformes are one of the currently-accepted suborders of the proboscisless leeches (Arhynchobdellida). Their best-known member is the European medical leech, Hirudo medicinalis, and indeed most of the blood-sucking "worms" as which leeches are generally perceived belong to this group. In general, though some leeches suck blood, many are predators which hunt small invertebrates.

<span class="mw-page-title-main">Leech</span> Parasitic or predatory annelid worms

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<i>Erpobdella</i> Genus of leeches

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<span class="mw-page-title-main">Leech collector</span>

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<i>Hirudo verbana</i> Species of leech

Hirudo verbana is a species of leech.

Hirudo orientalis is a species of medicinal leech. It has been confused with Hirudo medicinalis, but has recently been recognized as a different species. This Asian species is associated with mountainous areas in the subboreal eremial zone and occurs in Azerbaijan, Iran, Uzbekistan and Kazakhstan. It occurs also in Georgia, and probably in Armenia.

<i>Erpobdella octoculata</i> Species of leech

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Niabella drilacis is a Gram-negative and rod-shaped bacterium from the genus of Niabella which has been isolated from a leech from Biebertal in Germany.

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References

  1. International Commission on Zoological Nomenclature (1922). "Opinion 75. Twenty-Seven Generic Names of Protozoa, Vermes, Pisces, Reptilia and Mammalia Included in the Official List of Zoological Names". Smithsonian Miscellaneous Collections. 73 (1): 35–37.
  2. "ITIS standard report: Hirudo (Linnaeus, 1758)". Integrated Taxonomic Information System . Retrieved 21 August 2013.
  3. 1 2 Trontelj, P; Utevsky, SY (2005). "Celebrity with a neglected taxonomy: molecular systematics of the medicinal leech (genus Hirudo)". Mol Phylogenet Evol. 34 (3): 616–624. doi:10.1016/j.ympev.2004.10.012. PMID   15683933.
  4. DeSalle, R.; Egan, M. G.; Siddall, M. (2005). "The unholy trinity: taxonomy, species delimitation and DNA barcoding". Philosophical Transactions of the Royal Society B: Biological Sciences. 360 (1462): 1905–1916. doi:10.1098/rstb.2005.1722. ISSN   0962-8436. PMC   1609226 . PMID   16214748.
  5. 1 2 Saglam, N.; Saunders, R.; Lang, S. A.; Shain, D. H. (2016). "A new species of Hirudo (Annelida: Hirudinidae): historical biogeography of Eurasian medicinal leeches". BMC Zoology. 1 (1): 1–12. doi: 10.1186/s40850-016-0002-x . ISSN   2056-3132.
  6. Orevi, Miriam; Eldor, Amiram; Giguzin, Ida; Rigbi, Meir (2000-01-01). "Jaw anatomy of the blood-sucking leeches, Hirudinea Limnatis nilotica and Hirudo medicinalis, and its relationship to their feeding habits". Journal of Zoology. 250 (1): 121–127. doi:10.1111/j.1469-7998.2000.tb00583.x. ISSN   1469-7998.
  7. 1 2 3 4 5 Utevsky, Serge; Zagmajster, Maja; Atemasov, Andrei; Zinenko, Oleksandr; Utevska, Olga; Utevsky, Andrei; Trontelj, Peter (2010). "Distribution and status of medicinal leeches (genus Hirudo) in the Western Palaearctic: anthropogenic, ecological, or historical effects?". Aquatic Conservation: Marine and Freshwater Ecosystems. 20 (2): 198–210. doi:10.1002/aqc.1071. ISSN   1052-7613.
  8. "Hirudo nipponia – Clitellates". BiotaTaiwanica Citellates. Archived from the original on 17 December 2013. Retrieved 17 December 2013.
  9. Wang, H; Meng, FM; Jin, SJ; Gao, JV; Tong, XR; Liu, ZC (2022). "A new species of medicinal leech in the genus Hirudo Linnaeus, 1758 (Hirudiniformes, Hirudinidae) from Tianjin City, China". Liu. 1095: 83–96. doi: 10.3897/zookeys.1095.74071 . PMID   35836684.
  10. Trontelj, Peter; Utevsky, Serge Y. (2012). "Phylogeny and phylogeography of medicinal leeches (genus Hirudo): Fast dispersal and shallow genetic structure". Molecular Phylogenetics and Evolution. 63 (2): 475–485. doi:10.1016/j.ympev.2012.01.022. ISSN   1055-7903. PMID   22342869.
  11. Siddall, ME; Trontelj, P; Utevsky, SY; Nkamany, M; Macdonald, KS (2007). "Diverse molecular data demonstrate that commercially available medicinal leeches are not Hirudo medicinalis". Proceedings of the Royal Society B: Biological Sciences. 274 (1617): 1481–1487. doi:10.1098/rspb.2007.0248. PMC   2176162 . PMID   17426015.