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382 results for “Gastrotricha”
Figure 5 in Expanding the taxonomic catalog of Brazilian meiofauna: diversity and distribution of the neglected phyla Tardigrada, Gastrotricha, and Kinorhyncha
Figure 5. Species richness estimation within (A) Tardigrada and (B) Gastrotricha families in Brazil. Dark dots represent the actual number of described species and gray dots the extrapolated number of species for families with a number of described species that allows extrapolation.
Figure 4 in Expanding the taxonomic catalog of Brazilian meiofauna: diversity and distribution of the neglected phyla Tardigrada, Gastrotricha, and Kinorhyncha
Figure 4. Temporal accumulation curve of species of (A) Tardigrada and (B) Gastrotricha and the number of endemic and not endemic species in Brazil. Solid lines depict the interpolated curves, representing the rate of species description over time, while dashed lines extend these curves to show extrapolated rates. The gray areas surrounding the curves signify the 95% upper and lower bound confidence intervals for the estimated species description rates. Actual counts of described species are denoted by dots.
Figure 1 in Expanding the taxonomic catalog of Brazilian meiofauna: diversity and distribution of the neglected phyla Tardigrada, Gastrotricha, and Kinorhyncha
Figure 1. Number of Tardigrada, Kinorhyncha and Gastrotricha species described or reported to Brazil by year (from 1936 to July 2023).
Figure 1. Photomicrographs ofLepidochaetus zelinkai from live. A, B, E. Specimens, showing the body shape. C, D in Short Communication First record of Lepidochaetus zelinkai (Gastrotricha, Chaetonotida) from India
Figure 1. Photomicrographs ofLepidochaetus zelinkai from live. A, B, E. Specimens, showing the body shape. C, D. Details of mouth, tentacles (arrowheads in C), pharynx (C) and long and thin posterior spine (arrowhead in D). F, G. Anterior and middle portion of a specimen showing mouth, tentacles (arrowheads in F) and internal structures. At, adhesive tubes; C, cirri; EG, epidermal gland; M, mouth; P, pharynx; PJ, pharyngeal junction; Pn, protonephridia; S, scales. Scale bars, 50 μm.
Figure 2 in Short Communication First record of Lepidochaetus zelinkai (Gastrotricha, Chaetonotida) from India
Figure 2. Photomicrographs of Lepidochaetus zelinkai from live. A, B. Specimen, showing, the body shape, tentacles (arrowheads), posterior spines and adhesive tubes. C, E-G. Same specimen showing, details at different focus and sections, arrowheads in (E) points to the anterior lobe. D. Posterior spine. At, adhesive tubes; C, cirri; EG, epidermal gland; P, pharynx; PJ, pharyngeal junction; S, scales. Scale bars, 20 μm (D, G) and 50 μm (A, E, F).
Figure 2 in First record of Chaetonotus (Primochaetus) heideri (Gastrotricha, Chaetonotida) from India
Figure 2. Photomicrographs of the surface scales and spines in Chaetonotus (Primochaetus) heideri from live specimens. A-C. Specimens showing the anterior (A, B) and posterior (C) scales, bearing a double anterior edge. D. Middle portion of a specimen showing ventral spines and the spined scales in the interciliary field. E-G. Enlarged views showing barbed spines. Note the barbed structure present in the middle of the spines (arrowheads in D-F). S, scales; SP, spines. Scale bars: 20 μm (C) and 40 μm (A, B).
Figure 1 in First record of Chaetonotus (Primochaetus) heideri (Gastrotricha, Chaetonotida) from India
Figure 1. Photomicrographs ofChaetonotus (Primochaetus) heideri from live specimens. A-C. Specimens show the body shape and body flexibility. D. Enlarged view of the pharynx, arrowhead indicates a sensory ciliary tuft. E. Detailed view of the oral opening and sensory ciliary tufts (arrowheads). F. Posterior portion of a specimen with a thin adhesive tube. AT, adhesive tube; I, intestine; M, mouth; P, pharynx; PJ, pharyngeal junction. Scale bars: 40 μm (D, E) and 50 μm (A-C).
Figure 3 in First record of Chaetonotus (Primochaetus) heideri (Gastrotricha, Chaetonotida) from India
Figure 3. Photomicrographs ofChaetonotus (Primochaetus) heideri from live specimens. A, B. Detailed view of the anterior A. Spine alignment on the ventral surface, cephalic sensory ciliary tufts (arrowheads in A) and spined scales in the interciliary field. B. Specimen showing caudal spines (arrowheads in B) and eggs. C, locomotor cilium; EG, egg; I, intestine; M, mouth. Scale bars: 20 μm (B) and 40 μm (A).
FIG. 2 in Gastrotricha Mečnikow, 1865 from Copenhagen Palm House - contribution to the knowledge of Lepidodermella intermedia Kånneby, Todaro & Jondelius, 2012 (Chaetonotida, Gastrotricha)
FIG. 2. — Lepidodermella intermedia Kånneby, Todaro & Jondelius, 2012: A, B, C, details of the head: the cuticular denticle in the mouth opening is visible; D, E, ventral views: ventral keeled and spined scales are visible (arrows). Scale bars: 5 µm.
FIG. 3 in Gastrotricha Mečnikow, 1865 from Copenhagen Palm House - contribution to the knowledge of Lepidodermella intermedia Kånneby, Todaro & Jondelius, 2012 (Chaetonotida, Gastrotricha)
FIG. 3. — Lepidodermella intermedia Kånneby, Todaro & Jondelius, 2012. Dorsal view of scales. Scale bar: 5 µm.
FIG. 1 in Gastrotricha Mečnikow, 1865 from Copenhagen Palm House - contribution to the knowledge of Lepidodermella intermedia Kånneby, Todaro & Jondelius, 2012 (Chaetonotida, Gastrotricha)
FIG. 1. — Lepidodermella intermedia Kånneby, Todaro & Jondelius, 2012: A, dorsal view; B, view of internal morphology; C, ventral view. Scale bars: 20 µm.
FIG. 4 in Gastrotricha Mečnikow, 1865 from Copenhagen Palm House - contribution to the knowledge of Lepidodermella intermedia Kånneby, Todaro & Jondelius, 2012 (Chaetonotida, Gastrotricha)
FIG. 4. — Lepidodermella intermedia Kånneby, Todaro & Jondelius, 2012: A, B, detail of the dorsal posterior body region: two pairs of lateral parafurcal spines are visible (arrows). Scale bars: 5 µm.
Fig. 8 in Long distance dispersal and pseudo-cryptic species in Gastrotricha: first description of a new species (Chaetonotida, Chaetonotidae, Polymerurus) from an oceanic island with volcanic rocks
Fig. 8. Scanning electron microscopy. Polymerurus insularis sp. nov. A–B, D. Paratype (ZUEC GCH 59). C, E. Paratype (ZUEC GCH 60). A–B. Posterior dorsal view. C. Detail of the furca base in posterior dorsolateral view. D–E. Details of the furcal rami. Abbreviations: fb = furca base; fr = furcal rami; sc-4 = Type 4 scales; sc-5 = Type 5 scales. Scale bars = 10 µm.
Fig. 4 in Long distance dispersal and pseudo-cryptic species in Gastrotricha: first description of a new species (Chaetonotida, Chaetonotidae, Polymerurus) from an oceanic island with volcanic rocks
Fig. 4. Light microscopy – DIC. Polymerurus insularis sp. nov. Posterior region of the body. A. Paratype (ZUEC GCH 56). B, D. Holotype (ZUEC GCH 55). C. Paratype (ZUEC GCH 57). A–B. Posterior dorsal view. C. Posterior dorsolateral view. D. Posterior ventral view. Abbreviations: fr = furcal rami; sc-1 = Type 1 scales; sc-2 = Type 2 scale; sc-3 = Type 3 scales; sc-4 = Type 4 scales. Scale bars = 40 µm.
Fig. 5 in Long distance dispersal and pseudo-cryptic species in Gastrotricha: first description of a new species (Chaetonotida, Chaetonotidae, Polymerurus) from an oceanic island with volcanic rocks
Fig. 5. Close-up of the different types of scales described forPolymerurus insularis sp. nov.A–C. Paratype (ZUEC GCH 59). D, F. Holotype (ZUEC GCH 55). E. Paratype (ZUEC GCH 56). A–C. Scanning electron microscopy. D–F. Light microscopy – DIC. A. Detail of a section of the dorsal middle trunk, showing the most common type of scale, Type 1, with emphasis on its characteristic shape. B. Detail of a section of the dorsal posterior trunk, showing Type 2 and Type 3 scales. C–E. Detail of the transition between the dorsal posterior trunk and the dorsal furca base, showing the particular scale covering of this region. F. Detail of the transition between the ventral posterior trunk and the ventral furca base, showing the particular scale covering this region. Abbreviations: sc-1 = Type 1 scales; sc-2 = Type 2 scale; sc-3 = Type 3 scales; sc-4 = Type 4 scales; sc-5 = Type 5 scales; sc-6 = Type 6 scales; sc-7 = Type 7 scales; sc-8 = Type 8 scales; svs = small ventral pair of spines. Scale bars: A–C = 5 µm; D = 10 µm; E = 15 µm; F = 10 µm.
Fig. 3 in Long distance dispersal and pseudo-cryptic species in Gastrotricha: first description of a new species (Chaetonotida, Chaetonotidae, Polymerurus) from an oceanic island with volcanic rocks
Fig. 3. Light microscopy – DIC. Polymerurus insularis sp. nov., holotype (ZUEC GCH 55). A–C. Correspond to the most anterior third of the specimen. A. Anterior dorsal region. B. Anterior internal region. C. anterior ventral region. D–F. Correspond to the trunk. D. Dorsal trunk. E. Internal trunk. F. Ventral trunk. G–I. Correspond to the posterior third of the specimen. G. Dorsal posterior third. H. Internal posterior third. I. Ventral posterior third. Abbreviations: ce = cephalion; ct = cephalic bristles; eg = egg; hy = hypostomium; i = intestine; is = interciliary spines; lc = locomotory cilia; lce = lateral cephalic expansions; mo = mouth; ne = nephridia; pl = pleurae; ph = pharynx; PhIJ = pharyngealintestinal junction; sc-1 = Type 1 scales; sc-2 = Type 2 scale; sc-3 = Type 3 scales; sc-4 = Type 4 scales; vs = Type 1 ventral scale. Scale bars = 20 µm.
Fig. 1 in Long distance dispersal and pseudo-cryptic species in Gastrotricha: first description of a new species (Chaetonotida, Chaetonotidae, Polymerurus) from an oceanic island with volcanic rocks
Fig. 1. Sampling location, at the state of Pernambuco, Fernando de Noronha archipelago, Brazil A. Brazil. B. Fernando de Noronha Archipelago. C. Xaréu açude. Images provided by Google Earth (A–B) and Prof Dr Felipe Toledo, University of Campinas (C).
Fig. 6 in Long distance dispersal and pseudo-cryptic species in Gastrotricha: first description of a new species (Chaetonotida, Chaetonotidae, Polymerurus) from an oceanic island with volcanic rocks
Fig. 6. Schematic illustration of dorsal and ventral posterior regions and type scales of Polymerurus insularis sp. nov. A–B. Paratype (ZUEC GCH 56). A. Dorsal view of the posterior end. Some Type 1 scales are faded for a better visualization of Types 2, 3 and 5 scales. B. Ventral view of the posterior end. C. Each type of scale, individually depicted (not to scale). Abbreviations: ff = furcal furrow; fr = furcal rami; lc = locomotory cilia; is = interciliary spines; sc-1 = Type 1 scales; sc-2 = Type 2 scale; sc-3 = Type 3 scales; sc-4 = Type 4 scales; sc-5 = Type 5 scales; sc-6 = Type 6 scales; sc-7 = Type 7 scales; sc-8 = Type 8 scales. Scale bars = 40 µm.
Fig. 9 in Long distance dispersal and pseudo-cryptic species in Gastrotricha: first description of a new species (Chaetonotida, Chaetonotidae, Polymerurus) from an oceanic island with volcanic rocks
Fig. 9. Maximum Likelihood tree based on multigene approach with 18S and 28S sequences. Highlighted branches correspond to the Polymerurus Remane, 1927 species sequences. Values on the branches correspond, respectively, to: SH-aLRT support (%) / aBayes support / ultrafast bootstrap support (%).
Fig. 2 in Long distance dispersal and pseudo-cryptic species in Gastrotricha: first description of a new species (Chaetonotida, Chaetonotidae, Polymerurus) from an oceanic island with volcanic rocks
Fig. 2. Light microscopy – DIC. Polymerurus insularis sp. nov., holotype (ZUEC GCH 55). Full body view. A. Dorsal view. B. Internal view. C. Ventral view. Scale bars = 30 µm.
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