Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
35
datasets available to search
ShareScore release 0.7.1
Dataset results
35 results for “Rhynchobdellida”
FIGURE 7 in Two new species of Helobdella Blanchard 1896 (Hirudinida: Rhynchobdellida: Glossiphoniidae) from Taiwan, with a checklist of hirudinea fauna of the island
FIGURE 7. Neighbor joining tree of Helobdella based on COI sequences. Bootstrap values above 50 are shown. Specimens of H. melananus, H. octatestisaca and H. europaea from Taiwan are marked in bold.
FIGURE 2 in Two new species of Helobdella Blanchard 1896 (Hirudinida: Rhynchobdellida: Glossiphoniidae) from Taiwan, with a checklist of hirudinea fauna of the island
FIGURE 2. Internal morphology of Helobdella octatestisaca n. sp. Roman numerals of X and XX indicate the orders of the ganglia. an. Anus; atr. Atrium; br. Brain; cr. Crop and crop caeca; ejc. Ejaculatory duct; g. Ganglion; int. Intestine and intestine caeca; mth. Mouth; ov. Ovary; prb. Proboscis; rt. Rectum; salg. Salivary gland; scu. Scute; te. Testisacs.
FIGURE 1 in Two new species of Helobdella Blanchard 1896 (Hirudinida: Rhynchobdellida: Glossiphoniidae) from Taiwan, with a checklist of hirudinea fauna of the island
FIGURE 1. External morphology of Helobdella octatestisaca n.sp. Notice the smooth dorsal surface and the scute located middorsally in the anterior region. The scale indicates 1 mm.
FIGURE 6 in Two new species of Helobdella Blanchard 1896 (Hirudinida: Rhynchobdellida: Glossiphoniidae) from Taiwan, with a checklist of hirudinea fauna of the island
FIGURE 6. Internal morphology of Helobdella europaea. Roman numerals of X and XX indicate the orders of the ganglia. an. Anus; atr. Atrium; br. Brain; cr. Crop and crop caeca; ejc. Ejaculatory duct; g. Ganglion; int. Intestine and intestine caeca; mth. Mouth; ov. Ovary; prb. Proboscis; rt. Rectum; salg. Salivary gland; te. Testisacs.
FIGURE 4 in Two new species of Helobdella Blanchard 1896 (Hirudinida: Rhynchobdellida: Glossiphoniidae) from Taiwan, with a checklist of hirudinea fauna of the island
FIGURE 4. Internal morphology of Helobdella melananus n. sp.. Roman numerals of X and XX indicate the orders of the ganglia. an. Anus; atr. Atrium; br. Brain; cr. Crop and crop caeca; ejc. Ejaculatory duct; g. Ganglion; int. Intestine and intestine caeca; mth. Mouth; ov. Ovary; prb. Proboscis; rt. Rectum; salg. Salivary gland; te. Testisacs.
FIGURE 8. 3 D in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 8. 3 D volume renderings of O. margoi using the micro-CT technology. Contrast enhancement to expose the denser parts. A, dorsal view of the whole body until the posterior sucker (ps) enouncing the digestive system. From the posterior intestine (pi) two lateral post ceca are starting (pca). Four pairs of blind ending lateral diverticula (ld) are diverting from the posterior intestine that finally enlarge to form a sac-like structure. Arrows indicate the two lateral blind-ended sacks in the last sack of the posterior intestine. B, frontal view of the anterior sucker (as) showing the four lines of lateral columnar glands (gl) and a central gland-like structure separated from the other (arrow). Scale bar = 1 mm.
FIGURE 7 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 7. Section images of O. margoi using the micro-CT technology. A, antero-coronal section in 3 D volume rendering of the dorsal part of the leech, showing the glands (gl) with the gland duct (gd) and the oesophagus (oe). Five pairs of blind sacs (bs) begins on both sides of the posterior crop (pc). B, transversal section with the ganglionic mass (gm) overcome by a glandlike structure (gls) and surrounding the proboscis (pr). C, transversal section on the oviducal bridge (ob) with the two ovaries arching ventrally and separating the anterior (ac) and posterior crop (pc). D, antero-coronal section of the leech showing the oesophagus (oe) and four pairs of testis (T) connected (cn) in two points with the body cavity. On both lateral sides there are five pairs of external gills (g). E, coronal section of the whole body showing the posterior crop (pc), a pair of testes (t) tied to the celomic cavity with two connections (cn), two lateral post ceca (pca) and three of the four central sacs of the posterior intestine. F, transversal section of the not branchiate segment of the urosome showing two ventrally located lateral post ceca (pca), one central expanded posterior intestine (pi) and a dorsally directed lateral diverticula (ld). G, transversal section in proximity of the posterior sucker (ps) showing the posterior intestine (pi) ending in a dorsal anus (da). Scale bar = 1 mm.
FIGURE 6 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 6. Section images of O. margoi using the micro-CT technology. A, B, C. Coronal progressive sections of the trachelosome showing the ganglionic mass (gm) surrounding the alimentary tract between the proboscis (pr) and the oesophagus (oe). The proboscis start from a small mouth (m). The first section (a) shows the sopraesophageal ganglion (sg), than the ganglionic mass expand down of the oesophagus (oe) (b, c). D, lateral section at the exact half of the body. The brain (br) overcome by a gland-like structure (gls) and surrounds the proboscis (pr). The oesophagus (oe) is forming a loop on the top of the atrium and in the ventral part is visible the genital atrium (ga). E, lateral section before the half of the body. Two columns of denser glands cells (gl) are passing through the oesophagus's loop (oe). F, transversal section on the male organs. The atrium (oe) is tied to the celomic cavity trough a connection (cn) and overcome by the muscular bulb (mb) and the anterior crop (ac). G, antero-coronal section of the body showing the oesophagus (oe), the four column of glands (gl) and the atrium (a). Scale bar = 1 mm.
FIGURE 5 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 5. Histological transversal section of O. margoi. A, different stage of maturation of clusters of germ cells in the testes. Spermatogonia (sg) and spermatids (st) in each cluster are arranged around the cythophore (cy). In more advanced stages it is possible to observe the tails (t) and degenerating cytophores (asterisk). Scale bar = 100 µm. B, structure of the ovary. The ovisac (os) surround the ovary cord (oc) immersed in the ovary lumen (ol). Elongated follicular cells (fc) envelope the egg string that is composed by numerous immature germ cells (gc). The club-shaped end (cse) and a tiny convoluted central part of the cord are visible in this section. Scale bar = 100 µm. C, maturing oocytes (o) in proximity of nurse cells (nc). The germinal vesicle or nucleus (n) contains pale nucleoplasm (np) and nucleoli (nl). Scale bar = 50 µm.
FIGURE 4 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 4. Histological transversal section of O. margoi. A, section of the two lateral post ceca (pca), showing the central posterior intestine (pi) and empty lateral diverticula (ld). Scale bar = 500 µm. B, section trough the male system. The atrium is folded in two parts. The circular posterior part (pp) tied to the celomic cavity trough a connection (cn) and the dorso-ventrally flattened anterior part (ap) ventrally located with a central elongated empty canal (c). On the top of the atrium there is the muscular bulb (mb). Scale bar = 100 µm. C, the two ovaries (ov) containing the ovary cords develops beneath the posterior crop (pc). One of the two ejaculatory ducts (ed) and the ventral located nerve cord (nc) are visible. Scale bar = 100 µm. D, section at the level of the posterior crop (pc) filled with prey's blood. Beneath the posterior crop is possible to observe the two ovaries (o). The ovary on the left shows the terminal part of the egg string with two maturing irregular shaped oocytes (asterisk). On both sides of the posterior crop is visible one pair of testes (t) connected with the body wall trough connections (cn). In the left testis is visible the vasa efferentia (ve) diverting dorsally. Scale bar = 500 µm.
FIGURE 2 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 2. Scanning electron micrographs of the sensilla. A, B, ventral view of the anterior sucker showing two rings of sensilla (arrows), the external one with smaller sensilla. C, structure of a mouth sensillum showing a central overhead region delimited by a surrounding rime (sr) with cilia (c). D, particular of the anterior sucker showing numerous pores (arrows) beneath the rings of sensilla. E, ventral surface of the body showing regular pattern of sensilla (arrows) disposed in rows and alternate with pores. F, structure of a body sensillum showing short grouped cilia (g) and long single cilia (s) in the proximity of a pore.
FIGURE 3 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 3. Histological transversal section of O. margoi A, section of the anterior crop (ac) including the last part of the oesophagus (oe) and columns of gland cells (gc) ending in a gland duct (gd). Scale bar = 500 µm. B, section trough the female system exposing the vagina (v) with the set of duct of the seminal receptaculum (sr). Laterally two tiny ejaculatory ducts (ed) and the atrium (a) are shown. Scale bar = 500 µm. C, section of the dorsal part of the anterior sucker showing one of the two pigmented cup eyes with pigmented supportive cells (psc) and photoreceptor cells (phc). Scale bar = 50 µm. D, transversal section of the eye showing two photoreceptors. The apical part of those cells is composed by a vacuole-like structure (vls) located above a large cytoplasmic area containing the nucleus (n). Beside the nucleus nerve fibres (nf) are departing. Between the two eyes is visible the body cavity (cc). Scale bar = 50 µm. E, section of the ganglionic mass at the level of the supraesophageal ganglion (sg) surrounding the proboscis (pr). Around the ganglionic mass is visible the body cavity (cc). Scale bar = 200 µm. F, section along the oviducal bridge with the two tubular ovaries (ov) opening in two foramina (fac, fnc) for the passage of the alimentary canal (ac) and the nerve cord (nc). Down of the ovaries there are the two seminal vesicles (sv). Scale bar = 500 µm.
FIGURE 1 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 1. Ozobranchus margoi (Apáthy, 1890) scanning electron micrographs. A, ventral view showing the anterior (as) and posterior sucker (ps). B, dorsal view showing the gills (g) and the typical external annulation (an). C, morphology of the gills (g). Each pair of gills arising from a single biannulate somite of the urosome composed of (a 1 + a 2)> a 3, with a basal stalk (bs) dividing in secondary branches (sb) whence single filaments (f) are departing. D, ventral lateral view of the anterior sucker showing the atrium (a) extruded through the genital aperture (ga). E, ventral view of the branchiate segment showing the approximate position of the genital aperture (ga). F, occasionally a longitudinal canal was observed running the external surface of the filament (lc).
FIGURE 8. 3D in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 8. 3D volume renderings of O. margoi using the micro-CT technology. Contrast enhancement to expose the denser parts. A, dorsal view of the whole body until the posterior sucker (ps) enouncing the digestive system. From the posterior intestine (pi) two lateral post ceca are starting (pca). Four pairs of blind ending lateral diverticula (ld) are diverting from the posterior intestine that finally enlarge to form a sac-like structure. Arrows indicate the two lateral blind-ended sacks in the last sack of the posterior intestine. B, frontal view of the anterior sucker (as) showing the four lines of lateral columnar glands (gl) and a central gland-like structure separated from the other (arrow). Scale bar = 1mm.
FIGURE 7 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 7. Section images of O. margoi using the micro-CT technology. A, antero-coronal section in 3D volume rendering of the dorsal part of the leech, showing the glands (gl) with the gland duct (gd) and the oesophagus (oe). Five pairs of blind sacs (bs) begins on both sides of the posterior crop (pc). B, transversal section with the ganglionic mass (gm) overcome by a glandlike structure (gls) and surrounding the proboscis (pr). C, transversal section on the oviducal bridge (ob) with the two ovaries arching ventrally and separating the anterior (ac) and posterior crop (pc). D, antero-coronal section of the leech showing the oesophagus (oe) and four pairs of testis (T) connected (cn) in two points with the body cavity. On both lateral sides there are five pairs of external gills (g). E, coronal section of the whole body showing the posterior crop (pc), a pair of testes (t) tied to the celomic cavity with two connections (cn), two lateral post ceca (pca) and three of the four central sacs of the posterior intestine. F, transversal section of the not branchiate segment of the urosome showing two ventrally located lateral post ceca (pca), one central expanded posterior intestine (pi) and a dorsally directed lateral diverticula (ld). G, transversal section in proximity of the posterior sucker (ps) showing the posterior intestine (pi) ending in a dorsal anus (da). Scale bar = 1mm.
FIGURE 6 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 6. Section images of O. margoi using the micro-CT technology. A, B, C. Coronal progressive sections of the trachelosome showing the ganglionic mass (gm) surrounding the alimentary tract between the proboscis (pr) and the oesophagus (oe). The proboscis start from a small mouth (m). The first section (a) shows the sopraesophageal ganglion (sg), than the ganglionic mass expand down of the oesophagus (oe) (b, c). D, lateral section at the exact half of the body. The brain (br) overcome by a gland-like structure (gls) and surrounds the proboscis (pr). The oesophagus (oe) is forming a loop on the top of the atrium and in the ventral part is visible the genital atrium (ga). E, lateral section before the half of the body. Two columns of denser glands cells (gl) are passing through the oesophagus's loop (oe). F, transversal section on the male organs. The atrium (oe) is tied to the celomic cavity trough a connection (cn) and overcome by the muscular bulb (mb) and the anterior crop (ac). G, antero-coronal section of the body showing the oesophagus (oe), the four column of glands (gl) and the atrium (a). Scale bar = 1mm.
FIGURE 4 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 4. Histological transversal section of O. margoi. A, section of the two lateral post ceca (pca), showing the central posterior intestine (pi) and empty lateral diverticula (ld). Scale bar = 500 µm. B, section trough the male system. The atrium is folded in two parts. The circular posterior part (pp) tied to the celomic cavity trough a connection (cn) and the dorso-ventrally flattened anterior part (ap) ventrally located with a central elongated empty canal (c). On the top of the atrium there is the muscular bulb (mb). Scale bar = 100 µm. C, the two ovaries (ov) containing the ovary cords develops beneath the posterior crop (pc). One of the two ejaculatory ducts (ed) and the ventral located nerve cord (nc) are visible. Scale bar = 100 µm. D, section at the level of the posterior crop (pc) filled with prey's blood. Beneath the posterior crop is possible to observe the two ovaries (o). The ovary on the left shows the terminal part of the egg string with two maturing irregular shaped oocytes (asterisk). On both sides of the posterior crop is visible one pair of testes (t) connected with the body wall trough connections (cn). In the left testis is visible the vasa efferentia (ve) diverting dorsally. Scale bar = 500 µm.
FIGURE 3 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 3. Histological transversal section of O. margoi A, section of the anterior crop (ac) including the last part of the oesophagus (oe) and columns of gland cells (gc) ending in a gland duct (gd). Scale bar = 500 µm. B, section trough the female system exposing the vagina (v) with the set of duct of the seminal receptaculum (sr). Laterally two tiny ejaculatory ducts (ed) and the atrium (a) are shown. Scale bar = 500 µm. C, section of the dorsal part of the anterior sucker showing one of the two pigmented cup eyes with pigmented supportive cells (psc) and photoreceptor cells (phc). Scale bar = 50 µm. D, transversal section of the eye showing two photoreceptors. The apical part of those cells is composed by a vacuole-like structure (vls) located above a large cytoplasmic area containing the nucleus (n). Beside the nucleus nerve fibres (nf) are departing. Between the two eyes is visible the body cavity (cc). Scale bar = 50 µm. E, section of the ganglionic mass at the level of the supraesophageal ganglion (sg) surrounding the proboscis (pr). Around the ganglionic mass is visible the body cavity (cc). Scale bar = 200 µm. F, section along the oviducal bridge with the two tubular ovaries (ov) opening in two foramina (fac, fnc) for the passage of the alimentary canal (ac) and the nerve cord (nc). Down of the ovaries there are the two seminal vesicles (sv). Scale bar = 500 µm.
FIGURE 5 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 5. Histological transversal section of O. margoi. A, different stage of maturation of clusters of germ cells in the testes. Spermatogonia (sg) and spermatids (st) in each cluster are arranged around the cythophore (cy). In more advanced stages it is possible to observe the tails (t) and degenerating cytophores (asterisk). Scale bar = 100 µm. B, structure of the ovary. The ovisac (os) surround the ovary cord (oc) immersed in the ovary lumen (ol). Elongated follicular cells (fc) envelope the egg string that is composed by numerous immature germ cells (gc). The club-shaped end (cse) and a tiny convoluted central part of the cord are visible in this section. Scale bar = 100 µm. C, maturing oocytes (o) in proximity of nurse cells (nc). The germinal vesicle or nucleus (n) contains pale nucleoplasm (np) and nucleoli (nl). Scale bar = 50 µm.
FIGURE 2 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM
FIGURE 2. Scanning electron micrographs of the sensilla. A, B, ventral view of the anterior sucker showing two rings of sensilla (arrows), the external one with smaller sensilla. C, structure of a mouth sensillum showing a central overhead region delimited by a surrounding rime (sr) with cilia (c). D, particular of the anterior sucker showing numerous pores (arrows) beneath the rings of sensilla. E, ventral surface of the body showing regular pattern of sensilla (arrows) disposed in rows and alternate with pores. F, structure of a body sensillum showing short grouped cilia (g) and long single cilia (s) in the proximity of a pore.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.