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43 results for “Gordius”
FIGURE 2. Gordius gonzalezi, n in Gordius gonzalezi, a new species of horsehair worms (Nematomorpha) from Spain
FIGURE 2. Gordius gonzalezi, n. sp., ventral views on the posterior end. A. Posterior end of the paratype with postcloacal crescent (pcc); cloacal opening is not visible. Marked oval area indicates location of structures shown in B. B. Spine-like extensions on the outer side of the tail lobes. C. Posterior end of the holotype, labelled as in A. Marked area shows location of spines on the inner side of the tail lobes. D. Spines on the inner side of the tail lobes as marked in C. D. Magnification of slender and curved spines.
FIGURE 1. Gordius gonzalezi, n in Gordius gonzalezi, a new species of horsehair worms (Nematomorpha) from Spain
FIGURE 1. Gordius gonzalezi, n. sp., showing cuticular structure. A. Overview on the cuticle of the holotype. B. Magnification showing the distribution of spine-like extensions into two lines (arrows). C. In the paratype, the lines (arrows) are present, but not as obvious as in the holotype. D. Irregular distribution of spine-like extensions on the regions of the cuticle other than the ventral side. E, F. Magnification of spine-like extensions in the holotype (E) and the paratype (F).
FIG. 2 in Redescription of Gordius paranensis Camerano, 1892 (Nematomorpha), a species new for New Zealand
FIG. 2. Anterior end in one specimen of a New Zealand Gordius paranensis. (A) Terminal mouth opening is surrounded by knob-like structures and a circle of short spines. (B) Detail from (A) showing the transition between two cuticles (arrows).
FIG. 1 in Redescription of Gordius paranensis Camerano, 1892 (Nematomorpha), a species new for New Zealand
FIG. 1. Gordius paranensis. (A), (C), (D) Specimens from New Zealand. (B) Specimen from Chile (MCZ 1478). (C) Small areolated region anterior of the precloacal row of bristles. (D) Short spines in the region between precloacal row of bristles and postcloacal crescent in one specimen. arb, anterior row of bristles; co, cloacal opening; pcc, postcloacal crescent.
Figure 7 from: Anaya C, Schmidt-Rhaesa A, Hanelt B, Bolek MG (2019) A new species of Gordius (Phylum Nematomorpha) from terrestrial habitats in North America. ZooKeys 892: 59-75. https://doi.org/10.3897/zookeys.892.38868
Figure 7 Eggs of aquatic and terrestrial hairworms, light photomicrographs A egg of Gordius difficilis stained with Nile Blue; note the thin inner membrane (arrow) surrounding the larva B egg of Neochordodes occidentalis showing a thin inner membrane (arrow) surrounding the larva C egg of Paragordius obamai showing a developing larva surrounded by a thin inner membrane (arrow) D egg of Gordius terrestris sp. nov. showing a distinct thick inner membrane (arrow) surrounding the larva. Scale bars: 6 µm (A); 8 µm (B, C); 11 µm (D).
Figure 5 from: Anaya C, Schmidt-Rhaesa A, Hanelt B, Bolek MG (2019) A new species of Gordius (Phylum Nematomorpha) from terrestrial habitats in North America. ZooKeys 892: 59-75. https://doi.org/10.3897/zookeys.892.38868
Figure 5 Gordius terrestris sp. nov., larvae, light (A, B) and SEM (C–F) photomicrographs A live larva, showing the preseptum (PRE), postseptum (POS) and pseudointestine (PI) B recently hatched larvae showing everted proboscis (arrow) C larva note the superficial annulations (small arrows) and a single terminal spine located (large arrow) on the posterior region of the postseptum (POS) D preseptum, showing the arrangement of three sets of cuticular hooks, including outer hooks (OH), middle hooks (MH) and inner hooks (IH); and fused ventral outer hooks (VOH) E anterior end with the eversible proboscis (P); note the distinct spines on the distal end of the left lateral side (LLS), right lateral side (RLS) and dorsal side (DS) in respect to the ventral outer hooks (VOH) F partially everted proboscis (P) showing pairs of small spines (numbers) and a larger terminal spine on the distal end of the left lateral (LLS), right lateral (RLS) and dorsal sides (DS). Scale bars: 12 µm (A); 13 µm (B); 8 µm (C); 2.5 µm (D); 6 µm (E) 0.8 µm (F).
Figure 6 from: Anaya C, Schmidt-Rhaesa A, Hanelt B, Bolek MG (2019) A new species of Gordius (Phylum Nematomorpha) from terrestrial habitats in North America. ZooKeys 892: 59-75. https://doi.org/10.3897/zookeys.892.38868
Figure 6 Gordius terrestris sp. nov., cysts, light photomicrographs A–B fully formed cysts in experimentally infected Physa acuta snails; note the folded larva surrounded by a clear cyst wall of unknown composition with a distinct inner layer (IL) and outer layer (OL) C remaining cyst wall after the folded larvae was extruded under coverslip pressure. Note the opening where the larvae emerged (arrow) D–F different focal planes showing the distinct larvae folding pattern; note the location of the terminal spine (arrow) in F and that the larva folds twice within the fully formed cyst. Scale bars: 20 µm (A–F).
Figure 4 from: Anaya C, Schmidt-Rhaesa A, Hanelt B, Bolek MG (2019) A new species of Gordius (Phylum Nematomorpha) from terrestrial habitats in North America. ZooKeys 892: 59-75. https://doi.org/10.3897/zookeys.892.38868
Figure 4 Gordius terrestris sp. nov., eggs and egg strings, light photomicrographs A newly deposited egg strings B egg string segment showing tightly aggregated undeveloped eggs; note the eggshell (arrow) C segment of an egg string showing developing larvae within eggs D eggs with fully developed larvae; note the distinct space between the eggshell and the thick inner membrane. Scale bars: 4 mm (A); 40 µm (B); 25 µm (C); 20 µm (D).
Figure 1 from: Anaya C, Schmidt-Rhaesa A, Hanelt B, Bolek MG (2019) A new species of Gordius (Phylum Nematomorpha) from terrestrial habitats in North America. ZooKeys 892: 59-75. https://doi.org/10.3897/zookeys.892.38868
Figure 1 Gordius terrestris sp. nov., adult male from Stillwater, Oklahoma, light (A, D, G) and SEM (B, C, E, F, H, I) photomicrographs A anterior body region showing typical color pattern, showing the distinct calotte (arrow) and dark ring B anterior end, dorsal view C areole pattern on the anterior body region. Note the weakly developed areoles (circle) and the presence of bristles (arrows) D midbody region, dorsal view, showing distinct white spots and medial line E Midbody region, dorsal view, showing typical cuticular pattern F areole pattern on the midbody region; note the weakly developed polygonal shaped areoles (circle) G posterior body region, ventral view, showing distinct coloration; note the darkly pigmented postcloacal crescent and dark pigmentation on inner sides of the tale lobes (TL) H ventral view of the posterior region, showing the cloaca (Cl) and postcloacal crescent (PCC) I areole pattern on the posterior body region; note the weakly developed polygonal shaped areoles (circle) and the bristles (arrows). Scale bars: 210 µm (A); 130 µm (B); 18 µm (C); 220 µm (D, G); 290 µm (E); 10 µm (F); 175 µm (H); 20 µm (I).
Figure 3 from: Anaya C, Schmidt-Rhaesa A, Hanelt B, Bolek MG (2019) A new species of Gordius (Phylum Nematomorpha) from terrestrial habitats in North America. ZooKeys 892: 59-75. https://doi.org/10.3897/zookeys.892.38868
Figure 3 Gordius terrestris sp. nov., adult females from Stillwater, Oklahoma, light (A, D, G) and SEM (B, C, E, F, H, I) photomicrographs A anterior body region showing typical color pattern, showing the distinct calotte (arrow) followed by a dark ring B anterior end, dorsal view C areole pattern on the anterior body region; note the weakly developed polygonal shaped areoles (circle) D midbody region, lateral view, showing typical color pattern E midbody region, dorsal view showing typical cuticular pattern F midbody region, dorsal view, showing finer details of the cuticle; note the branching bristles (arrow) G posterior body region, ventral view, showing typical coloration H posterior body region, ventral view showing the location of the cloaca (CL) I posterior body region, areole pattern on the posterior body region; note the weakly developed polygonal shaped areoles (circle). Scale bars: 160 µm (A); 150 µm (B); 10 µm (C); 440 µm (D, G); 330 µm (E); 15 µm (F, I); 190 µm (H).
Figure 2 from: Anaya C, Schmidt-Rhaesa A, Hanelt B, Bolek MG (2019) A new species of Gordius (Phylum Nematomorpha) from terrestrial habitats in North America. ZooKeys 892: 59-75. https://doi.org/10.3897/zookeys.892.38868
Figure 2 Gordius terrestris sp. nov., adult males from Stillwater, Oklahoma, SEM photomicrographs A–C posterior body region, ventral view, note the variation in the shape of tail lobes and postcloacal crescents (PCC) below the cloaca (CL) D tail lobe showing the distinct row of bristles beginning below the postcloacal crescent (PCC) and progressing on the ventral inner side (small arrows) of the tail lobe (TL); and bristles distributed in a circular pattern on the terminal end (large arrow) of the tail lobe E–G variation in the weakly developed polygonal shaped areoles (circles) on the posterior body region of different male individuals; note the branching bristles (arrows) in E. Scale bars: 175 µm (A–C); 75 µm (D); 8 µm (E–G).
Supplementary material 2 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Fasta 2
Figure 6 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Figure 6 Immature stages of Gordius chiashanus sp. nov. A, B free-living larva (A) treated with hot water and a living larva showing the depression in the anterior end of the pseudointestine (arrow) C, D eggs with the inner membrane examined using an (C) SEM and (D) compound microscope E egg strings F–H cysts in the paratenic host with (F) a unfolded larva and (G) a folded larva, showing (H) a single posterior spine (arrow) after treatment with a 5% KOH solution. Abbreviations: Ho, hooklet; PostS, postseptum; PreS, preseptum; Pro, proboscis; PsI, pseudointestine. Scale bars: 50 µm (A–D, F–H), 1 mm (E).
Figure 7 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Figure 7 Phylogenetic relationship of Gordius/Acutogordius spp. restructured using COI partial sequences compared with C. formosanus, E. nigromaculatus, and P. diblastus as out groups. Numbers at the nodes represent the percentage of 1000 bootstrap replicates.
Supplementary material 1 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Video S1
Figure 5 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Figure 5 Field observation of Gordius chiashanus sp. nov. A hazy appearance (arrows) surrounding the body surface in hot water B spermatophore (arrow) on a female collected on the surface of the soil C rainbow-like reflection on the body surface D free-living adult collected in wet soil E, F infected host, Spirobolus sp. nov. (Hsu and Chang, unpublished), harboring (E) three immature worms (arrow) and (F) an adult worm. Photographs courtesy of (D) Fang, Hua-Te and (F) Hung, Ming-Chin. Scale bars: 1 cm (E).
Figure 8 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Figure 8 Seasonal occurrence of free-living adults of Gordius chiashanus sp. nov. Numbers at the bottom indicate the actual number of each bar.
Figure 4 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Figure 4 Female Gordius chiashanus sp. nov. A, B anterior end examined using a (A) stereomicroscope and (B) SEMC–E posterior end with the terminal view examined using a (C) stereomicroscope and (D) SEM, and the (E) lateral view examined using a stereomicroscope F, G mid-body examined using a (F) stereomicroscope and (G) compound microscope. Co, cloacal opening. Scale bars: 1 mm (A, F, G), 200 μm (B–D).
Figure 2 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Figure 2 Posterior end of male Gordius chiashanus sp. nov. A stereomicroscopic image of the posterior end B–DSEM images of (B) overview of the posterior end with bristles concentrated on the (C) lobe tips (arrow), and (D) inner side of the lobe tips and the formation of a bristle field on each tail lobe posterior to the tips of the postcloacal crescent (arrows) E cloacal opening with areoles on the inside wall. Scale bars: 1 mm (A), 500 μm (B), 200 μm (C–D), 50 μm (E).
Figure 3 from: Chiu M-C, Huang C-G, Wu W-J, Lin Z-H, Chen H-W, Shiao S-F (2020) A new millipede-parasitizing horsehair worm, Gordius chiashanus sp. nov., at medium altitudes in Taiwan (Nematomorpha, Gordiida). ZooKeys 941: 25-48. https://doi.org/10.3897/zookeys.941.49100
Figure 3 Mid-body of male Gordius chiashanus sp. nov. A, BSEM images of (A) cuticle in the mid-body with scattered short bristles (arrows) and (B) close-up view of a short bristle C, D white spots and dorsal and ventral dark pigmented line examined using (C) a compound microscope and (D) a stereomicroscope. Scale bars: 1 mm (A, C, D), 5 μm (B).
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