Hirudo | |
---|---|
Scientific classification | |
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]
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]
Species are typically exterior feeders. They have jaws that typically consist of about 60 teeth and do not possess papillae. [6]
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]
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]
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]
Hirudo medicinalis, the European medicinal leech, is one of several species of leeches used as "medicinal leeches".
The bird genus Hirundo is a group of passerines in the family Hirundinidae. The genus name is Latin for a swallow. These are the typical swallows, including the widespread barn swallow. Many of this group have blue backs, red on the face and sometimes the rump or nape, and whitish or rufous underparts. With fifteen species this genus is the largest in its family.
Haemadipsidae are a family of jawed leeches. They are a monophyletic group of hirudiniform proboscisless leeches. These leeches have five pairs of eyes, with the last two separated by two eyeless segments. The family is monotypic, containing only the subfamily Haemadipsinae, though as the family can apparently be divided into two or three distinct lineages, at least one of the proposed splits, while not a distinct family, might be a valid subfamily.
Polyura is a subgenus of butterflies also referred to as Nawab butterflies and belonging to the brush-footed butterfly subfamily Charaxinae, or leafwing butterflies. Like the large and conspicuous forest queens, they belong to the genus Charaxes, unique genus of the tribe Charaxini.
Euhirudinea, the true leeches, are an infraclass of the Hirudinea.
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.
Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea within the phylum Annelida. They are closely related to the oligochaetes, which include the earthworm, and like them have soft, muscular segmented bodies that can lengthen and contract. Both groups are hermaphrodites and have a clitellum, but leeches typically differ from the oligochaetes in having suckers at both ends and in having ring markings that do not correspond with their internal segmentation. The body is muscular and relatively solid, and the coelom, the spacious body cavity found in other annelids, is reduced to small channels.
CodonCode Aligner is a commercial application for DNA sequence assembly, sequence alignment, and editing on Mac OS X and Windows.
Erpobdella is a genus of leeches in the family Erpobdellidae. Members of the genus have three or four pairs of eyes, but never have true jaws, and are typically 20–50 millimetres (0.8–2.0 in) long. All members do not feed on blood, but instead are predators of small aquatic invertebrates, which they often swallow whole.
Perna is a genus of mussels, marine bivalve molluscs in the family Mytilidae.
A leech collector, leech gatherer, or leech finder was a person occupied with procuring medicinal leeches, which were in growing demand in 19th-century Europe. Leeches were used in bloodletting but were not easy for medical practitioners to obtain. The collector would sometimes gather the leeches by attracting them to the legs of animals, often old horses. More commonplace was for the collector to use their own legs, gathering the leech after it had finished sucking enough blood. Many in the profession suffered from the effects of the loss of blood and infections spread by the leeches.
Schmidtea is a genus of freshwater triclads. Species of the genus Schmidtea are widely used in regeneration and developmental studies.
Haemopis sanguisuga is a species of freshwater leech in the family Haemopidae. It is commonly called the horse-leech, but that is due to the similarity of its appearance to the leech Limnatis nilotica, which sometimes enters the nasal cavities of livestock. Haemopis sanguisuga does not behave in this way. Another synonym for this leech is Aulastomum gulo.
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.
Erpobdella octoculata is a freshwater leech in the Erpobdellidae family. This species can be found in Europe, the Mediterranean, and the Middle East.
Hirudo sulukii is a species of leech that has been found from Kara Lake of Adiyaman, Sülüklü Lake of Gaziantep and Segirkan wetland of Batman in Turkey.
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.
Limnatis nilotica is a species of leech in the family Hirudinidae. It is hematophagous, living on the mucous membranes of mammals.