Find research datasets worth reusing

Figure 8 in The Victoria Falls, a species boundary for the Zambezi Parrotfish, Cyphomyrus discorhynchus (Peters, 1852), and the resurrection of Cyphomyrus cubangoensis (Pellegrin, 1936) (Mormyridae: Teleostei)

Figure 8. Canonical three-dimensional plot of discriminant function analysis on correlations for morphological characters in the Cyphomyrus discorhynchus species complex. Spheres show the 95% confidence region to contain true mean of group. Note spheres for the three populations of Okavango/Upper Zambezi system origin all together in the lower left; Lower/Middle Zambezi specimens shown as two separate spheres, suggestive of geographic differentiation (the sphere on the far right, and the uppermost sphere). Blue -green Z symbols, from Lower Zambezi at Marromeu (n = 19); orange triangles, from Middle Zambezi (n = 35); red X symbols, specimens from Okavango River (n = 21); blue Y symbols, from upper Zambezi (n = 33); green diamonds, from Kwando River (n = 10). Data set included all 19 characters of Table B2. [This figure can be viewed in colour online.]

Figure 6 in The Victoria Falls, a species boundary for the Zambezi Parrotfish, Cyphomyrus discorhynchus (Peters, 1852), and the resurrection of Cyphomyrus cubangoensis (Pellegrin, 1936) (Mormyridae: Teleostei)

Figure 6. Electric Organ Discharge (EOD) pulse waveforms (Volts over time) for members of Cyphomyrus discorhynchus species complex. (A) EOD recorded from the single Lower Zambezi specimen (Tete) and from four Middle Zambezi specimens (Batoka Gorge). (B) Three specimens from the Upper Zambezi, Katima Mulilo. (C) Three specimens from the Kwando River, Kongola Bridge. Time-scale of 1 ms identical for all.

Figure 3 in The Victoria Falls, a species boundary for the Zambezi Parrotfish, Cyphomyrus discorhynchus (Peters, 1852), and the resurrection of Cyphomyrus cubangoensis (Pellegrin, 1936) (Mormyridae: Teleostei)

Figure 3. Morphological characters and how they were measured (for abbreviations, see Material and Methods).

Figure 4 in The Victoria Falls, a species boundary for the Zambezi Parrotfish, Cyphomyrus discorhynchus (Peters, 1852), and the resurrection of Cyphomyrus cubangoensis (Pellegrin, 1936) (Mormyridae: Teleostei)

Figure 4. Characters of an Electric Organ Discharge (EOD) pulse of a Cyphomyrus cf. discorhynchus and how they were defined. P1amp was normalized to 1 Volt by definition.

Figure 1 in The Victoria Falls, a species boundary for the Zambezi Parrotfish, Cyphomyrus discorhynchus (Peters, 1852), and the resurrection of Cyphomyrus cubangoensis (Pellegrin, 1936) (Mormyridae: Teleostei)

Figure 1. Members of the Cyphomyrus discorhynchus species complex. (A) Marcusenius cubangoensis Pellegrin 1936, Upper Okavango River, Angola (NMB 5216, syntype); (B) Cyphomyrus cubangoensis (Pellegrin, 1936), Namibia: province Kavango: Okavango River (SAIAB 20384 specimen R1); (C) C. cubangoensis (Pellegrin, 1936), Namibia: Caprivi Strip: Kwando River:

FIGS 46 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 46±48. Silver-carbonate impregnation. (46±47) Uronema nigricans; (48) Pseudocohnilembus pusillus. The structure of the oral infraciliature of P. pusillus is like that described by Niessen (1984, in Foissner et al., 1994). Cc, caudal cilium complex; Ma, macronucleus; OD, oral dikinetid; PK1, PK2, PK3, oral polykinetid 1, 2, and 3, respectively. Scale bars: 10 mm.

FIGS 49 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 49±54. Nomarski interference contrast; (49±50) Cristigera setosa. Cc, caudal cilia; Um, undulating membrane; Sc, somatic cilia. Arrowhead in (50) to the groove along the ventral surface, typical of the genus Cristigera; (51) Aspidisca marsupialis. Arrowhead to the characteristic ventral`thorn' of this species, a feature also observed by Penard (1922); (52±53) Mylestoma pusillum. Cc, caudal cilia; arrowhead to the longitudinal groove characteristic of this species; (54) Epalxella striata, a common ciliate in anaerobic environments, found in the brackish water of the crater-lake. Scale bars: 20 mm.

FIGS 39 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 39±44. Pleuroplites australis; (39) cultured organisms in an oxygen gradient (the air bubble is at the top margin of the photograph). The organisms accumulate at some distance from oxygen-saturated water, i.e. at the oxic-anoxic boundary. Arrows to some conjugating individuals; (40, 44) two di€erent cell shapes, each with two macronuclei. Arrows in (44) to the clavate cilia; (41±43) silver-impregnated specimens: (41, 43) silver-carbonate impregnation; (42) protargol. CV, contractile vacuole; E, extrusomes; FV, food vacuole; K, circumoral kinety; Ma, macronucleus; arrowheads in (43) at the somatic kineties that bear clavate cilia.

FIG. 38 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIG. 38. Pleuroplites australis. Morphological variants, and arrangement of the infraciliature. Note the disposition of the mitochondria (Mt) in longitudinal rows, and the variation in the number of macronuclei. C, clavate cilia; CV, contractile vacuole; E, extrusomes; K, circumoral kinety; Ma, macronucleus; mi, micronucleus; Mt, mitochondria.

FIGS 31 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 31±33. Protargol silver impregnation; (31) Oxytricha multigranulosa. AZM, adoral zone of membranelles in the oral region; (32, 33) Oxytricha salmastra; (32) ventral surface. Arrowheads to the cirri, and to the right and the left marginal row of cirri. Ma, macronucleus; (33) dorsal surface of the same specimen. Arrowheads to the dorsal kineties, of which the one at the far right of the photograph is shorter. Cc, caudal cilia. Scale bar: 20 mm.

FIGS 26 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 26±30. Metopus minor. Living organisms as seen with Nomarski interference contrast. AZM, adoral zone of membranelles. Arrowheads to the di€erent types of long cilia, which the ciliate uses for attachment to sediment particles (see text for further explanations). Scale bar: 20 mm.

FIGS 23 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 23±24. L embadion curvatum n. sp. Silver-carbonate impregnation. Infraciliature of the caudal cilia (arrowheads) in the ventral (23) and dorsal (24) side of the cell, respectively.

FIG. 25. L embadion curvatum n in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIG. 25. L embadion curvatum n. sp. Diagrams of the living form. Note that the maximum size range of individuals is 75±125 mm and they are not drawn to scale here.

FIGS 14 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 14±17. L embadion curvatum n. sp., living organisms as seen with Nomarski interference contrast. A cell of the ciliate Cristigera can be seen inside L. curvatum in (16) (arrowhead). Arrowheads in (15) to the two types of caudal cilia. Scale bars: 25 mm.

FIG. 18. L embadion curvatum n in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIG. 18. L embadion curvatum n. sp. Schematic representation of the infraciliature of (A) the ventrum, and (B) the dorsum of the cell, as seen after silver-carbonate impregnation. Note that the ventral surface has been drawn to show clearly the di€erent parts of the infraciliatureÐfor this purpose the caudal pole of the cell is slightly shifted towards the reader in order to show the arrangement of the caudal cilia around the pole. PO1, PO2, paroral kineties. PK, oral polykinetid. L1, L2, L3, argentiferous longitudinal lines that separate the silver-impregnated ribs supporting the cytostome. CC, caudal cilia.

FIGS 9 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 9±11. Silver-carbonate impregnation; (9) Cyclidium glaucom a. Scale bar: 10 mm. Ventral surface with the oral structures, and with part of the somatic kineties; (10, 11) Cyclidium citrullus seen from the anterior pole (10) and posterior pole (11) of the cell, respectively. Cc, caudal cilium complex; K 1, somatic kinety nÕ 1 (the one nÕ next to the last kinety, see text); Ma, macronucleus; mi, micronucleus; OP, oral polykinetids; SK, somatic kineties. Figs 12± 13. Prorodon discolor, silver-impregnated specimens. (12) B, brosse; Ma, macronucleus; SK, somatic kineties; (13) ingested diatoms (arrowheads) in the cytoplasm. Scale bar: 20 mm.

FIG. 8 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIG. 8. Diagram of Cyclidium citrullus and Cyclidium glaucoma as seen after impregnation with silver carbonate. Cc, caudal cilium complex; Cy, cytostome; CVP, contractile vacuole pore; OD, oral dikinetid; PK1, oral polykinetid 1; PK2, oral polykinetid 2; PK3, oral polykinetid 3; Sc, scuticovestige; SK, somatic kineties. Arrowhead to somatic kinety nÕ 1. Scale bar: 10 mm.

FIGS 19 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 19±22. L embadion curvatum n. sp. Silver-carbonate impregnation; (19, 21) ventral side of the cell. PO1, PO2, paroral kineties. PO1 is formed by paired kinetosomes (not zig-zagged). PO2 is formed by paired kinetosomes in zig-zag. Sometimes it seems to be formed by three kinetosomes arranged in zig-zag (see text). PK, oral polykinetid. CC, caudal cilia. L1, L2, L3, argentiferous longitudinal lines (L3 can be seen in (21 )). Ma, macronucleus. (20, 22) Dorsal side of the cell. Arrowheads in (20) and (21) to the`steps' marked by the end of the kineties in the middle course of PK.

FIG. 1 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIG. 1. Map showing the location of the volcano crater-lakes of Tower Hill near Warrnambool (1), and of Lake Bantic (2) in Tasmania.

FIGS 4 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia

FIGS 4±7. Chlamydodon mnemosyne, a ciliate with ciliature on the ventral surface only, as seen after silver-carbonate impregnation; (4, 5, 7) ventral surface; (6) dorsal surface; (7) specimen during cell division. Arrowheads to the contractile vacuole pores. DK, dorsal kinety; OA, oral aperture; Pe, peri-oral kineties; Pr, pre-oral kinety; R, striated band surrounding the perimeter of the cell, and known as the`rail road track' (see text). Scale bars: 10 mm.