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1,925 results for “Platyhelminthes”
FIGURE 12 in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 12. Dactylogyrus cf labeous Paperna, 1979 from Labeo coubie (voucher RMCA M.T. 35.516 D). A. anchor; B. ventral bar; C. dorsal bar; D. copulatory organ. Hooks and needles poorly defined.
FIGURE 5 in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 5. Dactylogyrus decaspirus Guégan, Lambert & Euzet, 1988. A. anchor; B. ventral bar; C. dorsal bar; D. hooks; E. needle; F. vagina; G. copulatory organ.
FIGURE 9 in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 9. Dactylogyrus omega Guégan & Lambert, 1991 from Labeo rouaneti (paratype MNHN HC 452 (Tj 239)). A. anchor; B. ventral bar; C. dorsal bar; D. hooks; E. copulatory organ. Needles indistinct.
FIGURE 11. Dactylogyrus dembae n in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 11. Dactylogyrus dembae n. sp. A. anchor; B. ventral bar; C. dorsal bar; D. hooks (pairs I–V = ventral, pairs VI, VII = dorsal); E. needle; F. vagina; G. copulatory organ.
FIGURE 10 in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 10. Dactylogyrus jaculus Guégan, Lambert & Euzet 1988. A. anchor; B. ventral bar; C. dorsal bar; D. hooks; E. needle; F. vagina; G. copulatory organ.
FIGURE 4 in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 4. Dactylogyrus falcilocus Guégan, Lambert & Euzet, 1988. A. anchor; B. dorsal bar; C. hooks; D. needle; E. vagina; F. copulatory organ.
FIGURE 8.I in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 8.I. Dactylogyrus sp. from Labeo victorianus originally described by Paperna (1973) as D. cyclocirrus (one of the specimens on the slide RMCA M.T. 35.700). A. anchor; B. ventral bar; C. dorsal bar; D. hooks; E. copulatory organ. II. Dactylogyrus cyclocirrus Paperna, 1973 from Labeo cylindricus (lectotype circled on the slide RMCA M.T. 35.699). A. anchor; B. dorsal bar; C. hooks; D. copulatory organ. Needles not observed.
FIGURE 7. Dactylogyrus yassensis n in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 7. Dactylogyrus yassensis n. sp. A. anchor; B. ventral bar; C. dorsal bar; D. hooks (pairs I–V = ventral, pairs VI, VII = dorsal); E. needle; F. copulatory organ.
FIGURE 6. Dactylogyrus oligospirophallus Paperna, 1973. A in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 6. Dactylogyrus oligospirophallus Paperna, 1973. A. anchor; B. ventral bar; C. dorsal bar; D. hooks; E. needle; F. vagina; G. copulatory organ.
FIGURE 3 in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 3. Dactylogyrus titus Guégan, Lambert & Euzet 1988. A. anchor; B. dorsal bar; C. hook; D. needle; E. copulatory organ.
FIGURE 2 in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 2. Dactylogyrus retroversus Guégan, Lambert & Euzet 1988. A. anchor; B. dorsal bar; C. hooks; D. needle; E. copulatory organ.
FIGURE 1 in Dactylogyrids (Platyhelminthes: Monogenea) from the gills of the African carp, Labeo coubie Rüppell (Cyprinidae), from Senegal, with descriptions of three new species of Dactylogyrus and the redescription of Dactylogyrus cyclocirrus Paperna, 1973
FIGURE 1. Scheme of measurement for sclerotized structures of haptor and reproductive organs (modified according to Gussev (1985)). (Aa) Anchor (Dactylogyrus), (Ab) anchor (Dogielius): 1 = inner length, 2 = outer length, 3 = inner root length, 4 = outer root length, 5 = point length; (B) bar: 6 = total length, 7 = median width; (C) hook: 8 = total length; (D) vagina: 9 = total length; (E) copulatory organ: 10 = total length, 11 = tube trace-length.
FIGURE 3. Thysanozoon brocchii. A in First records of Pseudocerotidae (Platyhelminthes: Polycladida: Cotylea) from Patagonia, Argentina
FIGURE 3. Thysanozoon brocchii. A, dorsal view of live specimen. B, ventral view of live specimen. Arrow heads show male gonopores.
FIGURE 2. Phrikoceros mopsus. A in First records of Pseudocerotidae (Platyhelminthes: Polycladida: Cotylea) from Patagonia, Argentina
FIGURE 2. Phrikoceros mopsus. A, diagram of dorsal view. B, ventral morphology. C, dorsal view of pseudotentacles. D, ventral view of pseudotentacles. E, sagittal reconstruction of genital system portion. bl: black line; ce: cerebral eye; de: dorsal eyes of the pseudotentacle; fg: female gonopore; g: cement glands; m: mouth; mg: male gonopore; p: pharynx; su: sucker; s: stylet; sv: seminal vesicle; v: vagina; ve: ventral eyes of the pseudotentacles.
FIGURE 1. Phrikoceros mopsus. A in First records of Pseudocerotidae (Platyhelminthes: Polycladida: Cotylea) from Patagonia, Argentina
FIGURE 1. Phrikoceros mopsus. A, dorsal view of live specimen. B, detail of the anterior end. Arrow-heads show the interruption of the marginal black line at the apical region of the pseudotentacles. C, dorsal view of the anterior end with cerebral eyes (arrow-head). D, dorsal view of the anterior end; arrow head shows some of the ventral pseudotentacular eyes. E, ventral view of the anterior end with ventral pseudotentacular eyes (arrow heads). Scale bars: A: 5 mm; B–E: 1 mm.
FIGURES 32–38 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURES 32–38. Gyrodactylus jarocho sp. nov. from Xiphophorus hellerii Heckel. 32. Light micrograph of the haptoral central hook complex showing the hamuli, the dorsal and the ventral bar (ventral view); 33. Light micrograph of the marginal hook; 34–35. Light micrographs of the marginal hook sickles; 36. Drawing of the central hook complex; 37. Drawing of the marginal hook sickle; 38. Drawing of the male copulatory organ (MCO). Scale bars: Figures 32, 33 and 36 = 5 µm; Figures 34, 35, 37 and 38 = 3 µm.
FIGURES 39–46 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURES 39–46. Gyrodactylus xalapensis sp. nov. from Heterandria bimaculata Heckel. 39. Light micrograph of the haptoral central hook complex showing the hamuli, the dorsal and the ventral bar (ventral view); 40–41. Light micrographs of the marginal hooks; 42. Light micrograph of the marginal hook sickle; 43. Light micrographs of the male copulatory organ (MCO); 44. Drawing of the central hook complex; 45. Drawing of the marginal hook sickle; 46. Drawing of the MCO. Scale bars: Figures 39–41 and 44 = 5 µm; Figures 42, 43, 45 and 46 = 3 µm.
FIGURE 31 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURE 31. Principal components analysis plot (Factor1 vs Factor2) of Gyrodactylus bullatarudis Turnbull, 1956, Gyrodactylus cytophagus Paperna, 1968, Gyrodactylus poeciliae Harris & Cable, 2000, Gyrodactylys rasini Lucký, 1973 and Gyrodactylus xalapensis sp. nov. (13 ln-transformed variables; n = 29 specimens). The specimens of G. xalapensis sp. nov. (ellipse 1) are clearly separated from G. rasini (ellipse 2). Separation of the specimens is effected by the several hamulus variables acting along Factor1 (total length (HTL), shaft length (HSL), point length (HPL), aperture distance (HA), distal shaft width (HDSW) and the proximal shaft width (HPSW)) and by point curve angle of the hamulus (CosHPCA), the total length (MHTL) and shaft length (MHSL) of the marginal hook acting through Factor2. Plot codes: a. G. bullatarudis from Poecilia mexicana Steindachner; b. G. bullatarudis from Xiphophorus hellerii Heckel; d. G. xalapensis sp. nov. from Heterandria bimaculata Heckel; e. G. bullatarudis paratype from Poecilia sphenops Valenciennes; j. G. poeciliae from Poecilia caucana (Steindachner); l. G. cytophagus from Aplocheilichthys pumilus (Boulenger); m. G. rasini from X. hellerii.
FIGURE 30 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURE 30. Principal Components Analysis plot (Factor1 vs Factor2) of the 13 point-to-point measurements made on 45 gyrodactylids collected from a range of poeciliid hosts. Separation of the specimens is principally influenced by the hamulus total length (HTL), shaft length (HSL), point length (HPL) and aperture distance (HA) acting along Factor1 in a negative direction, and the inner (CosIHAA) and outer (CosHAA) hamulus angles acting along Factor1 in a positive direction. The total length (MHTL) and the shaft length (MHSL) of the marginal hook are key variables in the separation of specimens along Factor2. The raw ellipses highlight the specimens of Gyrodactylus xalapensis sp. nov. from Heterandria bimaculata Heckel (1), and Gyrodactylus jarocho sp. nov. from Xiphophorus hellerii Heckel (2). Plot codes: a. Gyrodactylus bullatarudis Turnbull, 1956 from Poecilia mexicana Steindachner; b. G. bullatarudis from X. hellerii; c. G. j a ro c h o sp. nov. from X. hellerii; d. G. xalapensis from H. bimaculata; e. G. bullatarudis paratype from Poecilia sphenops Valenciennes; f. Gyrodactylus costaricensis Kritsky & Fritts, 1970 from P. sphenops; g. Gyrodactylus gambusiae Rogers & Wellborn, 1965 from Gambusia affinis Baird & Girard; h. Gyrodactylus pictae Cable, van Oosterhout, Barson & Harris, 2005 from Micropoecilia (=Poecilia) picta Regan; i. Gyrodactylus turnbulli Harris, 1986 from Poecilia reticulata Peters; j. Gyrodactylus poeciliae Harris & Cable, 2000 from Poecilia caucana Steindachner; k. Gyrodactylus milleri Harris & Cable, 2000 from P. caucana; l. Gyrodactylus cytophagus Paperna, 1968 from Aplocheilichthys pumilus Boulenger; m. Gyrodactylus rasini Lucký, 1973 from X. hellerii.
FIGURES 1–14. A in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURES 1–14. A size invariant comparison of the marginal hook sickles of two new species of Gyrodactylus with the nine species previously recorded infecting poeciliids. 1. Gyrodactylus jarocho sp. nov.; 2. Gyrodactylus xalapensis sp. nov.; 3. Gyrodactylus bullatarudis Turnbull, 1956 (re-examination); 4. Overlay of G. bullatarudis with G. j a ro c h o sp. nov. (broken line); 5. Overlay of G. bullatarudis with G. xalapensis sp. nov. (broken line); 6. Gyrodactylus costaricensis Kritsky & Fritts, 1970 (re–examination); 7. Overlay of G. costaricensis with G. j a ro c h o sp. nov. (broken line); 8. Overlay of G. costaricensis with G. xalapensis sp. nov. (broken line); 9. Gyrodactylus cytophagus Paperna, 1968 (reexamination); 10. Overlay of G. cytophagus with G. ja ro c ho sp. nov. (broken line); 11. Overlay of G. cytophagus with G. xalapensis sp. nov. (broken line); 12. Gyrodactylus gambusiae Rogers & Wellborn, 1965 (re-examination); 13. Overlay of G. gambusiae with G. j a ro c h o sp. nov. (broken line); 14. Overlay of G. gambusiae with G. xalapensis sp. nov. (broken line). Scale bars = 3 µm.
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