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31 results for “medicinal leech”
FIGURE 6. Macrobdella ditetra Moore, 1953 in Range Extension for the Elusive New England Medicinal Leech, Macrobdella sestertia Whitman, 1886 (Hirudinida: Macrobdellidae), in South Carolina, U.S.A., with Notes on Morphology, Coloration, and Biology
FIGURE 6. Macrobdella ditetra Moore, 1953 (CASIZ 224103) feeding on Lithobates sphenocephalus (Cope, 1886); arrows point to the leech.
FIGURE 4 in Range Extension for the Elusive New England Medicinal Leech, Macrobdella sestertia Whitman, 1886 (Hirudinida: Macrobdellidae), in South Carolina, U.S.A., with Notes on Morphology, Coloration, and Biology
FIGURE 4. Unusual overlapping annuli (annuli 48–49) observed on one specimen of Macrobdella sestertia (ChM IO7).
FIGURE 2. Macrobdella sestertia Whitman, 1886 in Range Extension for the Elusive New England Medicinal Leech, Macrobdella sestertia Whitman, 1886 (Hirudinida: Macrobdellidae), in South Carolina, U.S.A., with Notes on Morphology, Coloration, and Biology
FIGURE 2. Macrobdella sestertia Whitman, 1886 from Sleepy Creek, Edgefield Co., South Carolina (CASIZ 224101). Specimens were photographed alive on 1 August 2008.
FIGURE 3 in Range Extension for the Elusive New England Medicinal Leech, Macrobdella sestertia Whitman, 1886 (Hirudinida: Macrobdellidae), in South Carolina, U.S.A., with Notes on Morphology, Coloration, and Biology
FIGURE 3. Distribution of Macrobdella sestertia Whitman, 1886 in Edgefield Co., South Carolina, USA.
FIGURE 8 in Range Extension for the Elusive New England Medicinal Leech, Macrobdella sestertia Whitman, 1886 (Hirudinida: Macrobdellidae), in South Carolina, U.S.A., with Notes on Morphology, Coloration, and Biology
FIGURE 8. Field notes for Macrobdella collections at Northwood Lake (aka Suncook Pond), Rockingham Co., New Hampshire on 3 June 1938 by Reeve M. Bailey and James A. Oliver. Courtesy of Fish Division, University of Michigan Museum of Zoology (UMMZ).
FIG. 3 in Re-assessment of the medicinal leech Hirudo medicinalis Linnaeus, 1758, in Ireland
FIG. 3. — Searching for the medicinal leech at Blarney Lough, the last known home for this species in Ireland. The traditional technique by which this bloodsucking species attaches to a wader's legs is much recommended over the more frequently used shoreline netting. The concentric motion waves direct this swimming species to its potential host. An additional technique for finding the medicinal leech is to look for them amongst spawning frogs in the spring (Maitland 2011: 3).
FIG. 1 in Re-assessment of the medicinal leech Hirudo medicinalis Linnaeus, 1758, in Ireland
FIG. 1. — As early as 1827 the French hirudinologist Alfred Moquin-Tandon illustrated several nominal species of medicinal leech from western Europe (Moquin-Tandon 1827: 114-118). A, Hirudo medicinalis Linnaeus, 1758, from northern Europe; B, Hirudo troctina Johnson, 1816, from pharmacies in Montpellier.These species distinctions have been corroborated recently, both genetically and geographically (Utevsky et al. 2010; Trontelj & Utevsky 2012). Which species is indigenous to Ireland is discussed in the text. Scale bar: 1.0 cm.
FIG. 2 in Re-assessment of the medicinal leech Hirudo medicinalis Linnaeus, 1758, in Ireland
FIG. 2. — Distribution of historic records of the medicinal leech in Ireland in relation to the nearest extant population in Wales: 1, Blarney Lough, County Cork; 2, Mallow, County Cork; 3, County Kilkenny; 4, County Dublin; 5, Lough Mask, Counties Galway and Mayo; 6, Marloes Mere, Pembrokeshire, Wales.
Supplementary data for Kvist et. al. 2020 "Draft genome of the European medicinal leech Hirudo medicinalis (Annelida: Clitellata: Hirudiniformes) with emphasis on anticoagulants"
<p>anticoagulant_prots.tar.gz: Proteins sequence, alignment, exon structure, and tree files for identified anticoagulant proteins plus putative anticoagulant proteins from the Hirudo medicinalis ROM11733 v1 assembly</p> <p>Himedicinalis_ROM11733_annotation.tar.gz: InterProScan, UniProtKB, MAKER, RepeatModeller, Rfam, and tRNAscan-SE annotation files for the Hirudo medicinalis ROM11733 v1 assembly</p> <p>PhymmBL_tax_assign.tar.gz: PhymmBL files of the tree rounds of taxnonomic assignment</p>
Data from: A double-sided microscope to realize whole-ganglion imaging of membrane potential in the medicinal leech
Studies of neuronal network emergence during sensory processing and motor control are greatly promoted by technologies that allow us to simultaneously record the membrane potential dynamics of a large population of neurons in single cell resolution. To achieve whole-brain recording with the ability to detect both small synaptic potentials and action potentials, we developed a voltage-sensitive dye (VSD) imaging technique based on a double-sided microscope that can image two sides of a nervous system simultaneously. We applied this system to the segmental ganglia of the medicinal leech Hirudo verbana. Double-sided VSD imaging enabled simultaneous recording of membrane potential events from almost all of the identifiable neurons. Using data obtained from double-sided VSD imaging we analyzed neuronal dynamics in both sensory processing and generation of behavior and constructed functional maps for identification of neurons contributing to these processes.
Figure 1 in Reproductive biology and ecological strategies of three species of medicinal leeches (genus Hirudo)
Figure 1. The hatchling weight distribution of three Hirudo species. (A) Hirudo verbana; (B) Hirudo orientalis; (C) Hirudo medicinalis.
Figure 2 in Reproductive biology and ecological strategies of three species of medicinal leeches (genus Hirudo)
Figure 2. Growth curves of three Hirudo species demonstrating that H. medicinalis and H. orientalis had similar patterns of growth, whereas H. verbana initially lagged behind the other two species but its growth rate subsequently increased and caught up.
Figure 3 in Reproductive biology and ecological strategies of three species of medicinal leeches (genus Hirudo)
Figure 3. Survival rates of Hirudo species demonstrating similar survival patterns in H. orientalis and H. medicinalis and a higher mortality in H. verbana.
FIG. 2 in Toward a taxonomic revision of the medicinal leech Hirudo medicinalis Linnaeus, 1758 (Hirudinea: Hirudinidae): re-description of Hirudo troctina Johnson, 1816 from North Africa
FIG. 2. Comparison of male and female reproductive systems of Hirudo troctina from North Africa (left) [Dissection 27Z] and Hirudo medicinalis from western Turkey (right) [Dissection 28Z]. Dorsal view. Inset (left): left lateral view of vagina [Dissection 27Z]. Inset (right): left lateral view of vagina of Dissection 29Z (a more typical vaginal morphology for this species than Dissection 27Z). co, common oviduct; e, epididymis; eb, ejaculatory bulb; ed, ejaculatory duct; o, oviduct; os, ovisac; ps, penis sheath; pt, prostate; ts, testisac; v, vagina; vc, vaginal caecum; vd, vas deferens. Roman numerals indicate the location of respective somatic ganglia to assist in establishing the location of the reproductive organs. Scale bar: 1 mm.
FIG. 1 in Toward a taxonomic revision of the medicinal leech Hirudo medicinalis Linnaeus, 1758 (Hirudinea: Hirudinidae): re-description of Hirudo troctina Johnson, 1816 from North Africa
FIG. 1. Comparison of the foreguts of Hirudo troctina (left) [Dissection 30Z, neotype] and Hirudo medicinalis (right) [Dissection 35Z]. Ventral view. j, jaw; p, salivary papillae; s, sulcus; t, teeth. Scale bar: 1 mm.
Figure 3 in Estimating population density of the medicinal leech Hirudo orientalis Utevsky and Trontelj, 2005 (Clitellata: Hirudinida) using Visible Implant Elastomer tags
Figure 3. The medicinal leech after the injection. The tag in the dorsal surface of leech is shining under the ultraviolet light.
Data from: A double-sided microscope to realize whole-ganglion imaging of membrane potential in the medicinal leech
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Figure 1 in Estimating population density of the medicinal leech Hirudo orientalis Utevsky and Trontelj, 2005 (Clitellata: Hirudinida) using Visible Implant Elastomer tags
Figure 1. Artificial medicinal leech ponds of the University of Tehran.
Figure 8 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 8 - Geographical distribution of Hirudo medicinalis and Hirudo verbana, based on data published in 2012 (A). In the species Hirudo verbana, a western (w) and an eastern (e) phylogroup has been identified. Occurrence of medicinal leeches in the nest of aquatic birds (B). The photograph shows adult, living specimens of Hirudo medicinalis (with cocoon, see Inset) collected from a nest of a water bird (western marsh harrier, Circus aeruginosus) in Poland (adapted from Kovalenko and Utevsky 2012 [A] and Buczyńsky et al. 2014 [B], respectively).
Figure 6 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 6 - Intact (A) and fragmented (B) posterior sucker of an adult alcohol-preserved Hirudo medicinalis. The disk-shaped sucker is largely composed of muscle tissue containing numerous mitochondria. DNA-extractions for mt-sequence analysis (fragments of the gene CO-I) were performed from this part of the body that is not contaminated with the gut content of the blood-sucking annelid.
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