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22 results for “Phractocephalus”
Fig. 3 in Population and reproductive parameters of the red-tailed catfish, Phractocephalus hemioliopterus (Pimelodidae: Siluriformes), from the Xingu River, Brazil
Fig. 3. Size at first sexual maturity in the red-tailed catfish Phractocephalus hemioliopterus specimens collected from the Xingu River in Pará, Brazil.
Fig. 5 in Population and reproductive parameters of the red-tailed catfish, Phractocephalus hemioliopterus (Pimelodidae: Siluriformes), from the Xingu River, Brazil
Fig. 5. Relative frequency (%) of the different gonadal maturation stages of the red-tailed catfish Phractocephalus hemioliopterus specimens collected from the Xingu River in Pará, Brazil. a. males; and b. females.
Fig. 1 in The late Miocene Phractocephalus catfish (Siluriformes: Pimelodidae) from Urumaco, Venezuela: additional specimens and reinterpretation as a distinct species
Fig. 1. The living "cajaro" or "pirarara" Phractocephalus hemioliopterus, a specimen about 130 cm captured in the Orinoco river basin by an artisanal fisherman. Photo courtesy of K. Arnal (www.kikearnal.com).
Fig. 5 in The late Miocene Phractocephalus catfish (Siluriformes: Pimelodidae) from Urumaco, Venezuela: additional specimens and reinterpretation as a distinct species
Fig. 5. Osteological features of †Phractocephalus nassi new species and the living Phractocephalus hemioliopterus ANSP 179559; a, b, left opercle of †P. nassi, paratype, UNEFM-PF-0158, Urumaco Formation (middle member), El Hatillo; c, d, left opercle of P. hemioliopterus ANSP 179559 from the Amazon river; e, f, right pectoral girdle of †P. nassi, paratype, UNEFM-PF-0363, Urumaco Formation (middle member), El Mamón; g, left broken cleithrum of †P. nassi, paratype, UNEFM-PF-0158, Urumaco Formation (upper member), Tío Gregorio; h, left pectoral spine of †P. nassi, paratype, UNEFM-PF-0311, Urumaco Formation (middle member), El Mamón; i, j, pectoral left girdle and spine of P. hemioliopterus ANSP 179559 from the Amazon river; k, l, right suspensorium of †P. nassi, UNEFM-PF-0158, Urumaco Formation (middle member), El Hatillo; m, n, left suspensorium of P. hemioliopterus ANSP 179559 from the Amazon river. Scale equal to 20 mm.
Fig. 64. Phractocephalus hemioliopterus, 700 in The non-native freshwater fishes of Singapore: an annotated compilation
Fig. 64. Phractocephalus hemioliopterus, 700 mm SL, Pandan Reservoir.
Fig. 2 in The late Miocene Phractocephalus catfish (Siluriformes: Pimelodidae) from Urumaco, Venezuela: additional specimens and reinterpretation as a distinct species
Fig. 2. Locality map of the Urumaco area and fossiliferous sites.
FIGS 7-10 in Pseudocrepidobothrium ludovici sp. n. (Eucestoda: Proteocephalidea), a parasite of Phractocephalus hemioliopterus (Pisces: Pimelodidae) from Brazilian Amazon
FIGS 7-10. Pseudocrepidobothrium ludovici sp. n. from Phractocephalus hemioliopterus. (7) MHNG INVE 79281, paratype. Scolex, dorsoventral view. (8) MHNG INVE 22003, holotype. Mature proglottis, ventral view. (9) Mature proglottis, dorsal view; note secondary canals of the ventral osmoregulatory canals. (10) Gravid proglottis, ventral view. Abbreviations: do = dorsal osmoregulatory canal; mg = Mehlis gland; ov = ovary; sc = secondary canal; te = testes; ut = uterus; va = vas deferens; vd = vitelloduct; vi = vitellaria; vo = ventral osmoregulatory canal. Scale-bars: 7 = 250 µm; 8-10 = 500 µm.
FIGS 1-6 in Pseudocrepidobothrium ludovici sp. n. (Eucestoda: Proteocephalidea), a parasite of Phractocephalus hemioliopterus (Pisces: Pimelodidae) from Brazilian Amazon
FIGS 1-6. Pseudocrepidobothrium ludovici sp. n. from Phractocephalus hemioliopterus. Scanning electron photomicrographs. MHNG INVE 79302, paratype. (1) Scolex, dorsoventral view, with a anterior part of strobila. (2) Scolex, apical view. (3) Scolex, lateral view. (4) Scolex, dorsoventral view. (5) Detail of a sucker. (6) Capilliform filitriches near the center of the apical region. Scale-bars: 1 = 300 µm; 2 = 130 µm; 3 = 95 µm; 4 = 110 µm; 5 = 60 µm; 6 = 3 µm.
FIGS 11-16 in Pseudocrepidobothrium ludovici sp. n. (Eucestoda: Proteocephalidea), a parasite of Phractocephalus hemioliopterus (Pisces: Pimelodidae) from Brazilian Amazon
FIGS 11-16. Pseudocrepidobothrium ludovici sp. n. from Phractocephalus hemioliopterus. (11) MHNG INVE 79283, paratype. Cirrus-sac and vagina, dorsal view; note the presence of a vaginal sphincter. (12) Schematic view of the uterus in gravid proglottis. (13) MHNG INVE 79341, paratype. Pregravid proglottis, transverse section at testes level. (14) MHNG INVE 79341, paratype. Pregravid proglottis, transverse section at ovarian level. (15, 16) Eggs in distilled water, captured with Leica DMLB, showing the bi-layered embryophore. (15) IPCAS C-610, (Field number Br 649 3/5w). (16) MHNG INVE 22103, (field number Br 445). Abbreviations: ci = cirrus; cs = cirrus-sac; do = dorsal osmoregulatory canal; em = embryophore; lm = internal longitudinal musculature; ln = longitudinal lateral nerves; oe = outer envelope; om = oncospheric membrane; on = oncosphere; ov = ovary; te = testes; ut = uterus; va = vas deferens; vc = vaginal canal; vi = vitellaria; vo = ventral osmoregulatory canal; vs = vaginal sphincter. Scale-bars: 12 = 500 µm; 11, 13, 14 = 250 µm; 15, 16 = 20 µm.
FIGURES 30–33 in Towards a robust systematic baseline of Neotropical fish tapeworms (Cestoda: Proteocephalidae): amended diagnoses of two genera from the redtail catfish, Phractocephalus hemioliopterus
FIGURES 30–33. LINe DRAWINgS Of Zygobothrium megacephalum DIeSINg, 1850 fROM Phractocephalus hemioliopterus. 30. PRegRAVID PROgLOTTID, VeNTRAL VIeW (MHNG-PLAT-21854). NOTe: THe UTeRUS IS OMITTeD. 31. GRAVID PROgLOTTID, VeNTRAL VIeW (MHNG-PLAT-85239). 32, 33. CROSS-SeCTIONS AT THe LeVeL Of THe ANTeRIOR AND POSTeRIOR PARTS Of PROgLOTTID, ReSPeCTIVeLY (MHNG-PLAT-18316). Abbreviations: CC—CHROMOPHILIC CeLLS; DO—DORSAL OSMORegULATORY CANAL; DU—DIVeRTICULA Of UTeRUS; LM—INTeRNAL LONgITUDINAL MUSCULATURe; OO—OVARIAN OUTgROWTHS; OV—OVARY; ST—SUbTegUMeNTAL MUSCLe fIbeRS; SU— SUbTegUMeNTAL CeLLS; Te—TeSTeS; Tg—TegUMeNT; UT—UTeRUS; VI—VITeLLINe fOLLICLeS; VO—VeNTRAL OSMORegULATORY CANAL.
FIGURES 10–12 in Towards a robust systematic baseline of Neotropical fish tapeworms (Cestoda: Proteocephalidae): amended diagnoses of two genera from the redtail catfish, Phractocephalus hemioliopterus
FIGURES 10–12. LINe DRAWINgS Of Ephedrocephalus microcephalus DIeSINg, 1850 fROM Phractocephalus hemioliopterus. 10. SCOLeX, DORSOVeNTRAL VIeW (MHNG-PLAT-22371) 11. SCOLeX, SAgITTAL SeCTION (MHNG-PLAT-28296). 12. GRAVID PROgLOTTID, VeNTRAL VIeW (MHNG-PLAT-22009). NOTe: THe TeSTeS ARe OMITTeD. Abbreviations: CC—CHROMOPHILIC CeLLS; DO—DORSAL OSMORegULATORY CANALS; gC—gLANDULAR CeLLS; LM—INTeRNAL LONgITUDINAL MUSCULATURe; Me—MeTASCOLeX; OC—OSMORegULATORY CANALS; VO—VeNTRAL OSMORegULATORY CANALS.
FIGURES 13–18 in Towards a robust systematic baseline of Neotropical fish tapeworms (Cestoda: Proteocephalidae): amended diagnoses of two genera from the redtail catfish, Phractocephalus hemioliopterus
FIGURES 13–18. LINe DRAWINgS Of Ephedrocephalus microcephalus DIeSINg, 1850 fROM Phractocephalus hemioliopterus. 13. PRegRAVID PROgLOTTID, DORSAL VIeW (MHNG-PLAT-22009). NOTe: ONLY THe LATeRALMOST VITeLLINe fOLLICLeS IN THe ANTIPORAL AND POSTPORAL SIDeS ARe RePReSeNTeD, bUT THeY OCCUPY THe eNTIRe VeNTRAL SURfACe. 14–16. CROSS-SeCTIONS AT LeVeL Of MIDDLe PART Of PROgLOTTID, CIRRUS-SAC AND OVARY, ReSPeCTIVeLY (MHNG-PLAT-21910). 17. TeRMINAL geNITALIA, DORSAL VIeW (MHNG-PLAT- 22009). 18. EggS IN DISTILLeD WATeR (MHNG-PLAT-21851). Abbreviations: CC—CHROMOPHILIC CeLLS; CI—CIRRUS; CS—CIRRUS-SAC; DO—DORSAL OSMORegULATORY CANAL; eD—ejACULATORY DUCT; eM—eMbRYOPHORe; gA—geNITAL ATRIUM; LM—INTeRNAL LONgITUDINAL MUSCULATURe; LN—LONgITUDINAL NeRVe; Mg—MeHLIS' gLAND; OD—OVIDUCT; ON—ONCOSPHeRe; OV—OVARY; ST—SUbTegUMeNTAL MUSCLe fIbeRS; SU—SUbTegUMeNTAL CeLLS; Te—TeSTeS; Tg—TegUMeNT; UT—UTeRUS; V—VACUOLe; VA—VAS DefeReNS; VC—VAgINAL CANAL; VI—VITeLLINe fOLLICLeS; VO—VeNTRAL OSMORegULATORY CANAL; VS—VAgINAL SPHINCTeR.
FIGURE 29 in Towards a robust systematic baseline of Neotropical fish tapeworms (Cestoda: Proteocephalidae): amended diagnoses of two genera from the redtail catfish, Phractocephalus hemioliopterus
FIGURE 29. LINe DRAWINg Of Zygobothrium megacephalum DIeSINg, 1850 fROM Phractocephalus hemioliopterus. SAgITTAL SeCTION Of THe SCOLeX, SHOWINg THe POWeRfUL CIRCULAR MUSCULATURe IN THe ANTeRIOR PART Of SUCKeRS, USeD AS A SPHINCTeR fOR THe HOLDfAST SYSTeM (MHNG-PLAT-21847). Abbreviations: CM—CIRCULAR MUSCULATURe; LM—INTeRNAL LONgITUDINAL MUSCULATURe; OC—OSMORegULATORY CANAL.
FIGURES 19–28 in Towards a robust systematic baseline of Neotropical fish tapeworms (Cestoda: Proteocephalidae): amended diagnoses of two genera from the redtail catfish, Phractocephalus hemioliopterus
FIGURES 19–28. SCANNINg eLeCTRON MICROgRAPHS Of Zygobothrium megacephalum DIeSINg, 1850 (MHNG-PLAT-85239) fROM Phractocephalus hemioliopterus. 19. SCOLeX, ANTeRO-DORSOVeNTRAL VIeW. 20. SCOLeX, APICAL VIeW. 21. SCOLeX, LATeRAL VIeW. 22. DeTAIL Of THe SURfACe Of A MATURe PROgLOTTID. NOTe: THe LACINIATION PATTeRN ON THe PROgLOTTID SURfACeS. 23–28. MICROTRICHeS ON THe APeX Of THe SCOLeX, bRIDge-LIKe TISSUe, eXTeRNAL RIM Of SUCKeRS, beTWeeN SUCKeRS, STRObILA AND SURfACe Of LACINIATION, ReSPeCTIVeLY. NOTe: SMALL bLACK NUMbeRS CORReSPOND TO THe fIgUReS SHOWINg HIgHeR MAgNIfICATION IMAgeS Of THeSe SURfACeS.
FIGURES 1–9 in Towards a robust systematic baseline of Neotropical fish tapeworms (Cestoda: Proteocephalidae): amended diagnoses of two genera from the redtail catfish, Phractocephalus hemioliopterus
FIGURES 1–9. SCANNINg eLeCTRON MICROgRAPHS Of Ephedrocephalus microcephalus DIeSINg, 1850 (MHNG-PLAT-28296) fROM Phractocephalus hemioliopterus. 1. SCOLeX, LATeRAL VIeW, SHOWINg THe DeePLY WRINKLeD MeTASCOLeX. 2. DeTAIL Of THe SUCKeRS, APICAL VIeW. 3. SCOLeX, APICAL VIeW. 4–9. MICROTRICHeS ON THe APeX Of SCOLeX, eXTeRNAL AND INTeRNAL RIM Of SUCKeRS, SURfACe beTWeeN SUCKeRS, MeTASCOLeX AND STRObILA, ReSPeCTIVeLY. NOTe: SMALL bLACK NUMbeRS CORReSPOND TO THe fIgUReS SHOWINg HIgHeR MAgNIfICATION IMAgeS Of THeSe SURfACeS.
FIGURES 38, 39 in Towards a robust systematic baseline of Neotropical fish tapeworms (Cestoda: Proteocephalidae): amended diagnoses of two genera from the redtail catfish, Phractocephalus hemioliopterus
FIGURES 38, 39. LINe DRAWINgS Of eggS Of Cangatiella PAVANeLLI & DOS SANTOS, 1991 IN DISTILLeD WATeR. 38. Cangatiella arandasi PAVANeLLI & DOS SANTOS, 1991 (MHNG-PLAT-34751) fROM Trachelyopterus galeatus. 39. Cangatiella macdonaghi (SZIDAT & SORIA, 1951) (MHNG-PLAT-30269) fROM Odontesthes hatcheri. Abbreviations: eM—eMbRYOPHORe; Oe—OUTeR eNVeLOPe; ON—ONCOSPHeRe; PP—POLAR PROjeCTIONS; V—VACUOLe.
FIGURES 34–37 in Towards a robust systematic baseline of Neotropical fish tapeworms (Cestoda: Proteocephalidae): amended diagnoses of two genera from the redtail catfish, Phractocephalus hemioliopterus
FIGURES 34–37. LINe DRAWINgS Of Zygobothrium megacephalum DIeSINg, 1850 fROM Phractocephalus hemioliopterus. 34, 35. CROSS-SeCTIONS AT THe LeVeL Of THe ANTeRIOR AND POSTeRIOR PART Of THe TeRMINAL geNITALIA, ReSPeCTIVeLY. 36. TeRMINAL geNITALIA, VeNTRAL VIeW (MHNG-PLAT-18317). NOTe THe SMALL SPINeS (SPINITRICHeS) ON THe CIRRUS. 37. EggS IN DISTILLeD WATeR (MHNG- PLAT-85239). Abbreviations: AC—ARMeD CIRRUS; CC—CHROMOPHILIC CeLLS; DP—DIgITATe PROjeCTIONS; DO—DORSAL OSMORegULATORY CANAL; eD—ejACULATORY DUCT; eM—eMbRYOPHORe; LA—LACINIATIONS; LM—INTeRNAL LONgITUDINAL MUSCULATURe; Oe—OUTeR eNVeLOPe; ON—ONCOSPHeRe; V—VACUOLe; VA—VAS DefeReNS; VI—VITeLLINe fOLLICLeS; VO—VeNTRAL OSMORegULATORY CANAL; VS—VAgINAL SPHINCTeR.
Fig. 4 in Population and reproductive parameters of the red-tailed catfish, Phractocephalus hemioliopterus (Pimelodidae: Siluriformes), from the Xingu River, Brazil
Fig. 4. Variation of the gonadosomatic index (GSI) of adult (reproductive) red-tailed catfish Phractocephalus hemioliopterus specimens collected from the Xingu River, in Pará, Brazil.
Fig. 1 in Population and reproductive parameters of the red-tailed catfish, Phractocephalus hemioliopterus (Pimelodidae: Siluriformes), from the Xingu River, Brazil
Fig. 1. Study area on the middle Xingu River in Pará, Brazil. The black dots represent the sampling sites, and the arrows indicate the direction of the water flow.
Fig. 2 in Population and reproductive parameters of the red-tailed catfish, Phractocephalus hemioliopterus (Pimelodidae: Siluriformes), from the Xingu River, Brazil
Fig. 2. Length-weight relationship of the red-tailed catfish Phractocephalus hemioliopterus specimens collected from the Xingu River in Pará, Brazil. a. males; and b. females.
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