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1,925 results for “Platyhelminthes”
Figure 18 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 18. Geoplana cambara Almeida & Carbayo sp. nov. A, dorsal view of the living specimen MZUSP PL 2062, ~43 mm in length. B, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 2063. C, photomicrograph of a sagittal section of the inner pharyngeal epithelium showing its two muscle layers (each indicated with an arrowhead) of specimen MZUSP PL 2063. D, photomicrograph of a sagittal section of the copulatory apparatus of specimen MZUSP PL 2062. D, diagrammatic representation of the copulatory apparatus of specimen MZUSP PL 2062.
Figure 14 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 14. Geoplana caraguatatuba Almeida & Carbayo sp. nov. A, dorsal view of the living specimen MZUSP PL 2080, ~42 mm in length. B, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 2080. C, photomicrograph of the three muscle layers of the internal musculature pharynx in sagittal section of specimen MZUSP PL 2080.
Figure 6 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 6. Geoplana apua sp. nov. A, dorsal view of the MZUSP PL 2072 preserved specimen on millimetre graph paper after cutting off a piece of the body. B, photomicrograph of longitudinal and transverse muscles of the subintestinal parenchymatic layer in a horizontal section of specimen MZUSP PL 2072. C, diagramatic reconstruction of half of a transverse section of the pre-pharyngeal region of the holotype; dots represent longitudinal parenchymatic muscle fibres. D, photomicrograph of the two muscle layers of the internal musculature of the pharynx in sagittal section. E, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 2072. F, photomicrograph of the ejaculatory duct and its surrounding muscle of specimen MZUSP PL 2072 in sagittal section.
Figure 17 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 17. Geoplana cananeia Almeida & Carbayo sp. nov. Specimen MZUSP PL 2067. A, dorsal view of the living specimen, ~65 mm in length. B, photomicrograph of a sagittal section of the pharynx. C, photomicrograph of a transverse section of ejaculatory duct. D, photomicrograph of an oblique section of the distal portion of the penis papilla; note the gland necks gathered into dense bundles. E, diagrammatic representation of the copulatory apparatus from sagittal sections.
Figure 13 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 13. Geoplana paranapiacaba Almeida & Carbayo sp. nov. A, diagrammatic representation of the copulatory apparatus of specimen MZUSP PL 2079 from sagittal sections. B, photomicrograph of a sagittal section of the copulatory apparatus of specimen MZUSP PL 2079. C, photomicrograph of a sagittal section of the penis papilla tip of specimen MZUSP PL 2079. D, photomicrograph of posterior section of female atrium of specimen MZUSP PL 2079.
FIGURE 7. Pericelis genus-level partial 28S in Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)
FIGURE 7. Pericelis genus-level partial 28S rDNA phylogeny using Bayesian inference, rooted with Theama sp. Accession numbers shown after species names.
FIGURE 6 in Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)
FIGURE 6. Comparison of the genitals of P. tectivorum sp. nov. and P. byerleyana. A. Reconstruction of the genital of P. tectivorum sp. nov. B. Reconstruction of the genital of P. byerleyana after Meixner 1907. cg = cement glands; cp = cement pouch ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sb = spermiducal bulbs; sbe = spermiducal bulbs entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; ute = uterine entrance; v = vagina; vd = vasa deferentia; vde = vasa deferentia entrance. Orientation: anterior to the left.
FIGURE 4 in Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)
FIGURE 4. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (paratype). A. Penis papilla and female genitals. B. Female genitals and sucker. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm.
FIGURE 5 in Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)
FIGURE 5. Sagittal serial sections of the male genital of P. tectivorum sp. nov. (holotype). A–D. First spermiducal bulbs with entrance. E. Junction between spermiducal bulbs to seminal vesicle. F–J. Seminal vesicle. K–N. Penis papilla. O–R. Male atrium. S–W. Second spermiducal bulbs with entrance. ed = ejaculatory duct; ma = male atrium; mg = male gonopore; pp = penis papilla; sb = spermiducal bulbs; sbm = sperm bulb muscles; sbe = spermiducal bulbs entrance; sv = seminal vesicle. Orientation: anterior to the left. Scale A-V 200 µm, W 50 µm.
FIGURE 3 in Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)
FIGURE 3. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (holotype). A. Female genitals and sucker. B. Penis papilla and female genitals. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sbe = spermiducal bulb entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm.
FIGURE 2 in Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)
FIGURE 2. Drawing of the eye configuration of P. tectivorum sp. nov. ce = cerebral eyes; fe = frontal eyes; me = marginal eyes; te = tentacle eyes. Orientation: anterior to the left.
FIGURE 1 in Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)
FIGURE 1. Live images of P. tectivorum sp. nov. A. Dorsal view. B. Detailed view of the tentacles. C. Detailed view of the cerebral and anteriorly extending frontal eyes. D. Dorsal view. E. Detailed view of the sucker. br = brain; ce = cerebral eyes; fe = anteriorly extending frontal eyes; su = sucker; t = tentacle. Orientation: anterior directed upwards.
FIGURE 9 in Two new species of marine flatworm from southern China facilitate determination of the phylogenetic position of the genus Nerpa Marcus, 1948 and the histochemical structure of the nervous system in the genus Paucumara Sluys, 1989 (Platyhelminthes, Tricladida, Maricola)
FIGURE 9. Paucumara falcata. Photomicrographs: (A) PLA-Pa002, testes; (B–C) PLA-Pa002, penis and musculoparenchymatic organ; (D) PLA-Pa002, female reproductive system; (E) PLA-Pa001, oviducts and bursal canal. Scale bar: 20 µm.
FIGURE 8 in Two new species of marine flatworm from southern China facilitate determination of the phylogenetic position of the genus Nerpa Marcus, 1948 and the histochemical structure of the nervous system in the genus Paucumara Sluys, 1989 (Platyhelminthes, Tricladida, Maricola)
FIGURE 8. Paucumara falcata. Whole mounts. (A) PLA-N004, entire animal; (B) PLA-N004, testes and ovaries; (C) PLA- N006, penis and musculo-parenchymatic organ; (D) PLA-N005, musculo-parenchymatic organ. Scale bar: A–B = 200 µm, C– D = 50 µm.
FIGURE 6 in Two new species of marine flatworm from southern China facilitate determination of the phylogenetic position of the genus Nerpa Marcus, 1948 and the histochemical structure of the nervous system in the genus Paucumara Sluys, 1989 (Platyhelminthes, Tricladida, Maricola)
FIGURE 6. Nerpa fistulata. (A) diagrammatic horizontal reconstruction of entire animal, based on examination of several specimens; (B) diagrammatic sagittal reconstruction of the copulatory apparatus, based on examination of several specimens.
FIGURE 5 in Two new species of marine flatworm from southern China facilitate determination of the phylogenetic position of the genus Nerpa Marcus, 1948 and the histochemical structure of the nervous system in the genus Paucumara Sluys, 1989 (Platyhelminthes, Tricladida, Maricola)
FIGURE 5. Nerpa fistulata. Photomicrographs of sagittal sections. (A–B) PLA-N003, ovaries; (C) PLA-N003, copulatory apparatus; (D) PLA-N003, lateral bursa; (E) PLA-N001, oviduct. Scale bar: 20 µm.
FIGURE 4. Nerpa fistulata. PLA-N004 in Two new species of marine flatworm from southern China facilitate determination of the phylogenetic position of the genus Nerpa Marcus, 1948 and the histochemical structure of the nervous system in the genus Paucumara Sluys, 1989 (Platyhelminthes, Tricladida, Maricola)
FIGURE 4. Nerpa fistulata. PLA-N004, photomicrographs of horizontal sections. (A) anterior end; (B–F) copulatory apparatus. Scale bar: 20 µm.
FIGURE 11 in Two new species of marine flatworm from southern China facilitate determination of the phylogenetic position of the genus Nerpa Marcus, 1948 and the histochemical structure of the nervous system in the genus Paucumara Sluys, 1989 (Platyhelminthes, Tricladida, Maricola)
FIGURE 11. Paucumara falcata. (A) diagrammatic reconstruction of the copulatory apparatus, based on examination of several specimens; (B) two animals in copulation. Scale bar: 500 µm.
FIGURE 1 in Two new species of marine flatworm from southern China facilitate determination of the phylogenetic position of the genus Nerpa Marcus, 1948 and the histochemical structure of the nervous system in the genus Paucumara Sluys, 1989 (Platyhelminthes, Tricladida, Maricola)
FIGURE 1. Bayesian inference phylogenetic tree topology based on 18S rDNA dataset. Numbers on branches indicate support values (posterior probability/bootstrap).
FIGURE 3 in Two new species of marine flatworm from southern China facilitate determination of the phylogenetic position of the genus Nerpa Marcus, 1948 and the histochemical structure of the nervous system in the genus Paucumara Sluys, 1989 (Platyhelminthes, Tricladida, Maricola)
FIGURE 3. Nerpa fistulata. Whole mounts. (A) PLA-N005, whole animal; (B) PLA-N006, penis and oviduct; (C) PLA-N005, penis. Scale bar: A = 100 µm, B–C = 20 µm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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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.