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177 results for “Enoplidae”
FIGURE 9 in Taxonomic review of Thoracostomopsidae (Nematoda, Enoplida): state of the art, list of valid species and dichotomous keys
FIGURE 9. Diagnostic key to species of Thoracostomopsis based on the morphology of adult males. 1: Gubernaculum absent; 2: Gubernaculum present; 3: Spicules long, slightly curved at the distal portion, about 2,5 abd; 4: Spicules short, almost straight, <1 abd; 5: Spicules long, slightly curved and needle-like about 2 abd, gubernaculum length about 0.6–0.8 abd; 6: Spicules short, almost straight about 1 abd, gubernaculum length about 0.3 abd.
FIGURE 2 in Taxonomic review of Thoracostomopsidae (Nematoda, Enoplida): state of the art, list of valid species and dichotomous keys
FIGURE 2. Diagnostic key to species of Enoplolaimus, based on the morphology of adult males. 1: Precloacal supplement absent; 2: Precloacal supplement present; 3: Gubernaculum absent; 4: Gubernaculum present; 5: Body length> 3 mm; 6: Body length <3 mm; 7: Gubernaculum with apophysis; 8: Gubernaculum without apophysis; 9: Conicocylindrical tail; 10: Conical tail; 11: Body length <2 mm; 12: Body length equal or> 2 mm; 13: Twelve subcephalic setae; 14: Fourteen subcephalic setae; 15: Smooth cuticle; 16: Finely striated cuticle; 17: Presence of dots in the cuticle; 18: Absence of dots in the cuticle; 19: Asymmetric spicules; 20: Symmetric spicules; 21: Straight spicules; 22: Non-straight spicules; 23: Body length> 3 mm; 24: Body length <3 mm; 25: Gubernaculum present; 26: Gubernaculum absent; 27: Reduced gubernaculum; 28: V- shaped gubernaculum; 29: Tail length <3 abd; 30: Tail length> 3 abd; 31: Gubernaculum absent; 32: Gubernaculum present; 33: Gubernaculum with apophysis; 34: Gubernaculum without apophysis; 35: Body length> 4 mm; 36: Body length <4 mm; 37: Spicules split at the tip as the stigma of a flowering plant; 38: Spicules not split at the tip; 39: Gubernaculum with apophysis directed dorsally; 40: Gubernaculum with apophysis directed caudally; 41: Spicules> 65 µm; 42: Spicules <65 µm; 43: Spicules length about 2.5 gubernaculum length, index α 60–70; 44: Spicules length about 1.2–1.5 gubernaculum length, index α 30–50; 45: Tail length> 5 abd; 46: Tail length ≤ 5 abd; 47: Long bristles (100 μm) spread over the body; 48: Body bristles <40 μm; 49: Precloacal supplement situated at a distance superior to 5 abd; 50: Precloacal supplement near to the cloaca (1 to 3 abd); 51: Conico-cylindrical tail (9 abd) with very long cylindrical portion; 52: Conico-cylindrical tail (5–6 abd) with short cylindrical portion; 53: Body length of 1.2 mm, arcuate spicules of 36–38 μm and preclocal supplement situated at 1.6 abd; 54: Body length approximately 1.5 mm, arcuate spicules of 35–41 μm and precloacal supplement at 2.7 abd; 55: Body length> 3 mm; 56: Body length ≤ 3 mm; 57: Spicules> 60 μm; 58: Spicules <60 μm; 59: Gubernaculum straight and very long (almost spicules size); 60: Gubernaculum slim and short; 61: Smooth cuticle; 62: Slight striated cuticle; 63: Conico-cylindrical tail; 64: Conical tail; 65: Spicules> 2 abd; 66: Spicules <2 abd; 67: Precloacal supplement situated at 150 μm distant from cloaca; 68: Precloacal supplement situated at less than 100 μm distant from cloaca; 69: Gubernaculum distally hook-shaped; 70: Simple gubernaculum; 71: Spicules almost L-shaped and 74 μm; 72: Spicules semicircular and 46 μm.
FIGURE 6 in Taxonomic review of Thoracostomopsidae (Nematoda, Enoplida): state of the art, list of valid species and dichotomous keys
FIGURE 6. Diagnostic key to species of Oxyonchus based on the morphology of adult males. 1: Cuticle with transverse striations; 2: Cuticle without striations; 3: Spicules not arcuate, gubernaculum without apophysis, tail shorter than spicules (2x tail length); 4: Spicules arcuate, gubernaculum with apophysis, tail longer than spicules; 5: External labial setae ≤ 0.8 head diameter in length; 6: External labial setae ≥ 1 head diameter in length; 7: Precloacal supplement absent; 8: Precloacal supplement present; 9: Tail <5 abd long; 10: Tail> 5 abd long; 11: Long cervical setae posterior to cephalic capsule, spicules length about 1.5 abd; 12: Absence of cervical setae, spicules length about 1 abd; 13: Buccal cavity with 14–15 denticles; 14: Buccal cavity with <6 denticles; 15: Precloacal supplement at 1 abd to cloaca; 16: Precloacal supplement at 3 abd to cloaca; 17: External labial setae> 1.5 times head width; 18: External labial setae <1.5 times head width; 19: Spicules slender, uniformly curved; 20: Spicules stout, 'comma-shaped'; 21: Mandibles low, arched, with more than 20 denticles in several rows on lower half; 22: Mandibles high, nearly rectangular, with up to 20 uniformly distributed denticles; 23: Tail length 4–4.5 abd; 24: Tail length 5–6 abd; 25: Mandibles with 15–20 denticles, precloacal supplement 2–2.5 abd from cloaca; 26: Mandibles with 4 denticles, precloacal supplement 3.8–4.2 abd from cloaca; 27: Gubernaculum with apophysis directed caudally; 28: Gubernaculum with apophysis directed dorsally; 29: 10 denticles randomly displaced in the mandibular plate, precloacal supplement at 2 abd from cloaca; 30: 16 denticles in two rows, precloacal supplement at 3.7 abd from cloaca.
FIGURE 5 in Taxonomic review of Thoracostomopsidae (Nematoda, Enoplida): state of the art, list of valid species and dichotomous keys
FIGURE 5. Diagnostic key to species of Mesacanthoides based on the morphology of adult males. 1: Gubernaculum absent; 2: Gubernaculum present; 3: Gubernaculum reduced, precloacal supplement absent; 4: Gubernaculum and precloacal supplement present; 5: Precloacal supplement very large and spoon-like; 6: Precloacal supplement small and tubular; 7: Spicules> 3 abd length, tail filiform with flagellum; 8: Spicules length <3 abd, tail plump or alongated, never filiform; 9: Lips unstriated and small mandibles (18 µm); 10: Lips striated and large mandible (30 µm); 11: Body length> 10 mm; 12: Body length <7 mm; 13: Head with uncommun pattern of large cephalic and subcephalic setae forming 4 circles, gubernaculum more or less plate-shaped; 14: Head with common pattern of cephalic setae followed by 1–2 circle(s) of subcephalic setae, gubernaculum S-shaped; 15: Implantation of cephalic setae near middle of cephalic capsule, spicules tip pointed, tail conical tail; 16: Implantation of cephalic setae at posterior edge of cephalic capsule, spicules tip elaborately armed, conico-cylindrical tail.
FIGURE 8 in Taxonomic review of Thoracostomopsidae (Nematoda, Enoplida): state of the art, list of valid species and dichotomous keys
FIGURE 8. Diagnostic key to species of Parasaveljevia based on the morphology of adult males. 1: Lateral cephalic setae (?) of the same length of the other four and cephalic setae inserted at the anterior end of the head capsule; 2: Lateral cephalic setae (?) longer than the other four and cephalic setae inserted in the posterior third of head; 3: Apical organ or cirri on each lateral side of the head, at level of labial setae, tail 4.5–5.0 anal diameters long; 4: Apical organ or cirri on each lateral side of the head, between labial setae and cephalic setae, tail <4.5 anal diameters long.
FIGURE 6 in A new species of the genus Thalassironus (Nematoda: Enoplida: Ironidae) from the coasts of South Korea
FIGURE 6. Pictorial key to all known species of Thalassironus (valid species in bold). Figure source: (a) Bussau, 1993; (b) Vitiello, 1970; (c) Inglis, 1964; (d) Keppner, 1987; (e) Keppner, 1987; (f) Keppner, 1991; (g) Keppner, 1986; (h) Wieser, 1953; (i) Zhang, 1990.
FIGURE 5 in A new species of the genus Thalassironus (Nematoda: Enoplida: Ironidae) from the coasts of South Korea
FIGURE 5. Scanning electron micrographs of Thalassironus koreanus sp. nov. A. male, cloacal opening with distal part of spicule visible, supplementary organ anteriorly above it (asterisk); B. male, surface with metanemes visible (arrow); C. male, tail with pairs of subventral setae (arrow); D. female, tail lacking subventral setae.
FIGURE 3 in A new species of the genus Thalassironus (Nematoda: Enoplida: Ironidae) from the coasts of South Korea
FIGURE 3. Thalassironus koreanus sp. nov. (♀) A. head, lateral view, showing teeth and buccal cavity; B. caudal region, showing anus; C. female, lateral view, reproductive system; D. habitus; E. vulva (paratype). Scale bars: 20 µm (A, B, E) and 100 µm (C, D).
FIGURE 4 in A new species of the genus Thalassironus (Nematoda: Enoplida: Ironidae) from the coasts of South Korea
FIGURE 4. Scanning electron micrographs of Thalassironus koreanus sp. nov. A. male, face view; B. male mouth obstructed by unknown object, cervical papillae visible near the left-plane (arrow); C. female mouth and six lips and six inner labial papillae (arrow); D. female mouth, lateral view with outer labial setae and cephalic setae with slit for amphid ambiguously showing as well as cervical setae below.
FIGURE 2 in A new species of the genus Thalassironus (Nematoda: Enoplida: Ironidae) from the coasts of South Korea
FIGURE 2. Thalassironus koreanus sp. nov. (♂) A. habitus showing 13 metanemes distributed along the body; B. head, lateral view, showing teeth and buccal cavity; C. tail, with spicule and gubernaculum apophysis; D. head to cardia, lateral view. Scale bars: 100 µm (A) and 20 µm (B, C, D).
FIGURE 1 in Thalassironus filiformis sp. nov. (Nematoda, Enoplida) from the South China Sea
FIGURE 1. Thalassironus filiformis sp. nov. (A, B, D, holotype) (A) lateral view of male head end, showing cephalic setae, teeth, buccal cavity and amphideal fovea; (B) lateral view of male posterior end; (C) entire view of female, showing vulva, uterus and ovaries; (D) lateral view of male cloaca region, showing spicule, gubernaculum and precloacal seta; (E) lateral view of female anterior end; (F) female reproductive system, showing vulva, vagina and ovary.
FIGURE 3 in Thalassironus filiformis sp. nov. (Nematoda, Enoplida) from the South China Sea
FIGURE 3. Thalassironus filiformis sp. nov. (A) lateral view of molting juvenile anterior end, showing buccal cavity and teeth; (B) lateral view of female vulva region, showing uterus and vulva;. (Scales: A, B 20 μm)
FIGURE 2 in Thalassironus filiformis sp. nov. (Nematoda, Enoplida) from the South China Sea
FIGURE 2. Thalassironus filiformis sp. nov. (A–D, holotype) (A) lateral view of male anterior end, showing teeth; (B) lateral view of male anterior end, showing buccal cavity and cephalic setae; (C) lateral view of male cloacal region, showing spicule; (D) lateral view of male cloacal region, showing gubernaculum and precloacal seta. (Scales: A, B, C, D 20 μm)
FIGURE 6 in Two new and one known species of Phanodermatidae (Nematoda: Enoplida) from Sagami Bay, Japan
FIGURE 6. Crenopharynx caudata (Filipjev, 1927) comb. nov. Male: A, head with buccal cavity. B, head with pharyngo- cephalic complex. C, tail. D, distal part of spicule. E, gubernaculum. Female: F, tail. Scale bars: A, B, D, E, 10 μm; C, F, 100 μm.
FIGURE 2 in Two new and one known species of Phanodermatidae (Nematoda: Enoplida) from Sagami Bay, Japan
FIGURE 2. Phanodermopsis kohtsukai sp. nov. Holotype male: A, head with pharyngo-cephalic complex. B, head with amphid. C, tail. D, spicule. Scale bars: A, B, 10 μm; C, 100 μm; D, 50 μm.
FIGURE 3 in Three new species of the free-living marine nematode Metoncholaimus Filipjev 1918 (Enoplida, Oncholaimidae) from Argentinean coasts
FIGURE 3. Metoncholaimus perdisus sp. n.: (A) Head region (internal) of holotype male (CNP-NEM 16668); (B) Head region (external) of holotype male (CNP-NEM 16668); (C) Posterior end of paratype female (CNP-NEM 16827); (D) Head region (in- ternal) of paratype female (CNP-NEM 16827); (E) Head region (external) of paratype female (CNP-NEM 16827); (F) Posterior end of holotype male in ventral view (sketch); (G) Posterior end of holotype male (CNP-NEM 16668). Scale bars: 1= 20 µm.
FIGURE 5 in Three new species of the free-living marine nematode Metoncholaimus Filipjev 1918 (Enoplida, Oncholaimidae) from Argentinean coasts
FIGURE 5. Reproductive and demanian system of paratype females: (A) Metoncholaimus sanmatiensis sp. n. (CNP-NEM 1655); (B) Metoncholaimus perdisus sp. n. (CNP-NEM 16959); (C) Metoncholaimus paracavatus sp. n. (CNP-NEM 1540). Scale bars: 1= 500 µm; 2= 200 µm; 3= 100 µm.
FIGURE 4 in Three new species of the free-living marine nematode Metoncholaimus Filipjev 1918 (Enoplida, Oncholaimidae) from Argentinean coasts
FIGURE 4. Metoncholaimus paracavatus sp. n.: (A) Head region (external) of holotype male (CNP-NEM 1539); (B) Head region (internal) of holotype male (CNP-NEM 1539); (C) Posterior end of holotype male (CNP-NEM 1539); (D) Cloacal region of holotype male (CNP-NEM 1539) showing the gubernaculum and papilla; (E) Head region (external) of paratype female (CNP-NEM 1540); (F) Head region (internal) of paratype female (CNP-NEM 1540); (G) Posterior end of paratype female (CNP-NEM 1540). Scale bars: 1= 20 µm.
Fig. 7 in Analysis of major sperm proteins in two nematode species from two classes, Enoplus brevis (Enoplea, Enoplida) and Panagrellus redivivus (Chromadorea, Rhabditida), reveals similar localization, but less homology of protein sequences than expected for Nematoda phylum
Fig. 7 Immunolocalization of MSP in E. brevis sperm. a Immature spermatozoon from male. MSP is diffusely distributed in cytoplasm and concentrated in large granules (scale bar 10 µm). b Spermatozoon recovered from male and partially activated by 10-min incubation in sea water. MSP undergoes transformation resulting in appearance of
Fig. 5 in Analysis of major sperm proteins in two nematode species from two classes, Enoplus brevis (Enoplea, Enoplida) and Panagrellus redivivus (Chromadorea, Rhabditida), reveals similar localization, but less homology of protein sequences than expected for Nematoda phylum
Fig. 5 Western blot analysis of MSP in E. brevis. a MSP has unusual mobility in gel and is found as protein with weight 36–38 kDa. Both male and female samples reveal MSP signal, because the latter include inseminated females. α-Tubulin was used as a loading control (approximate weight 55 kDa). b Peptide competition assay confirms reactivity of anti-MSP antibodies with protein band of 36–38 kDa
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