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227 results for “lake morphology”
Figure 3 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 3 A–F SEM micrographs of Pseudostaurosira pulchra sp. nov. from the Bolivian Altiplano A, B outer views of valves showing axial area, striae and spines features C inner view of valve still attached to neighboring cell. Black arrow indicates absence of apical pore field. Dotted arrow points to depression into which the stria opens internally D tilted view of frustule. Notice larger valvocopula, lateral growth of spines and blister-like depositions on abvalvar edge of mantle E outer view of valve tip. Black arrow denotes absence of apical pore field. Notice round to elliptical spine base and larger areola on valve mantle. F frustule attached to neighboring valve by means of heavily silicified spines. Notice open girdle elements (white arrow) and depositions along abvalvar mantle edge. Scale bars: 2 µm (E); 4 µm (C, F); 5 µm (A, B, D).
Figure 5 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 5 A–F SEM images of Pseudostaurosira heteropolaris sp. nov. from the Bolivian Altiplano A, B Valve views showing striation pattern and features of the axial area, virgae, vimines, and spine location C side view of complete frustule and neighboring cell showing girdle bands (white arrows denote open copulae). White arrows point to open girdle elements D close up of C showing details of spines with bifurcations with pinnatifid projections, characteristics of the striae on valve mantle and the features of the blisters E broken frustule with girdle bands. Pattern of volae within areolae is also shown F frustule in side, tilted view. Notice open copulae (white arrow) and reduced apical pore field with cavernous poroids (black arrow). Scale bars: 1 µm (D); 3 µm (A–C, E); 4 µm (F).
Figure 2 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 2 A–F SEM images of little known "araphid" diatoms from the Bolivian Altiplano A, BNanofrustulum cataractarumA specimen from the Desaguadero River, showing quasifract girdle elements with prominent ligulae (white arrows) B specimen from the Sajama River showing common internal depression into which the areolae open (dotted arrows) and the blister-like depositions of silica at the abvalvar edge of the mantle C, DN. rarissimum from the Desaguadero River C small, spineless valve D internal view showing apical and foot pole pore fields (black arrows) and internal depressions containing all areolae within a stria (dotted arrow) E, FPseudostaurosira sajamaensis from the Desaguadero River E top view showing gradual transition of valve face to mantle and the reduced apical pore fields (black arrow) F side view of two half cells still attached by heavily silicified spines. Notice open girdle elements (white arrows). Scale bars: 1 µm (B); 3 µm (C, E); 4 µm (A, D); 5 µm (F).
Figure 1 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 1 A–M' LM images of little known and new "araphid" diatoms from the Bolivian Altiplano A–ENanofrustulum cataractarumF–LN. rarissimumM–SPseudostaurosira sajamaensisT–ZP. pulchra sp. nov. (Fig. 1U is the holotype) A'–G' P. aedes sp. nov. (Fig. 1A' is the holotype). H'–M' P. heteropolaris sp. nov. (Fig. 1I' is the holotype). Scale bar: 10 µm.
Figure 8 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 8 A–F SEM images of Pseudostaurosira frankenae sp. nov. A, B titled frustules showing external features; notice open girdle elements in B (white arrows) C, D internal view of valves showing internal elliptic depositions on striae (dashed arrows) and depression of the apical pore field (black arrows) E close-up of frustule apex (B) showing the externally occluded apical pore field, showing only a single row of poroids (black arrow) F close-up of frustule tip (A) showing open girdle bands (white arrow). Scale bars: 2 µm (E, F); 3 µm (C); 5 µm (A, B, D).
Figure 10 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 10 A–F SEM images of Pseudostaurosira oblonga sp. nov. A, B external views showing apical pore fields covered with small flaps (black arrow in A) and other characteristics C, E internal valve features stressing on apical pore fields and striae in a depression (black arrows in C and dashed arrow in C and E respectively) D, F titled views of valves showing girdle bands (white arrow in F) and apical pore field (black arrow in F). Scale bars: 4 µm (B, C, E, F); 5 µm (A, D).
Figure 4 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 4 A–F SEM images of Pseudostaurosira aedes sp. nov. from the Bolivian Altiplano A top, tilted view of valve showing axial area, slightly raised virga, valve face areolae covered with bilobed or disk-like flaps, and slightly larger valve mantle areola covered with two or more flaps B, D, E, F girdle views showing features of the valve mantle, open girdle elements with larger valvocopula (white arrows in D and E). Notice serrate spines with well-developed stipules in F which have varying patterns C inner view showing reduced apical pore field (black arrow) and single depression into which the areolae open internally (dotted arrow). Scale bars: 4 µm (D); 5 µm (A–C, E, F).
Figure 7 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 7 A–F SEM images of Pseudostaurosira vulpina sp. nov. A, B valve views showing striation pattern, features of the axial area, spine position and presence of depressed apical pore fields (black arrows) C, D close-ups with details of apical pore fields areolae and spines E tilted view of a frustule showing open girdle bands with overlapping extremes (white arrows) F internal view showing apical pore fields and the internal disk-like areolar depositions. Scale bars: 2 µm (C, D); 5 µm (A, B, E, F).
Figure 9 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 9 A–F SEM images of Pseudostaurosira occulta sp. nov. A, B external views of valves showing apical pore fields (black arrow in A) and other features C internal view of valve showing depressions containing the striae (dashed arrow) D internal close-up showing apical pore field depression (black arrow) and striae depression (dashed line) E close-up on valve apex showing flaps on apical pore field (black arrow) and open girdle element (white arrow) F close-up on cell-cell connection showing apical pore field covered with flaps (black arrow) and open girdle element (white arrow). Scale bars: 2 µm (D, E); 3 µm (F); 5 µm (A–C).
Figure 6 from: Morales EA, Wetzel CE, Ector L (2021) New and poorly known araphid diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in araphid diatom taxonomy. PhytoKeys 187: 23-70. https://doi.org/10.3897/phytokeys.187.73338
Figure 6 A–V LM images of little known and new "araphid" diatoms from the Bolivian Altiplano A–DPseudostaurosira vulpina stat. nov. E–IP. frankenae sp. nov. (Fig. 6E is the holotype) J–OP. occulta sp. nov. (Fig. 6K corresponds to the holotype) P–VP. oblonga sp. nov. (Fig. 6R corresponds to the holotype). Scale bar: 10 µm.
FIGURE 7 in Molecular and morphological identification of frog species collected at Rara Lake in Rara National Park, Nepal
FIGURE 7. All known records of Paa species from Nepal.
FIGURE 6 in Molecular and morphological identification of frog species collected at Rara Lake in Rara National Park, Nepal
FIGURE 6. The tadpoles of Paa rarica NHM 17A-121. (A) tadpole in life; (B) tadpole in preservative.
Supplementary material 7 from: Karanovic I, Sitnikova TY (2017) Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. ZooKeys 684: 19-56. https://doi.org/10.3897/zookeys.684.13249
p-distances between COI sequences : Explanation note: data were used for the Figure 16.
Supplementary material 6 from: Karanovic I, Sitnikova TY (2017) Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. ZooKeys 684: 19-56. https://doi.org/10.3897/zookeys.684.13249
p-distances between 16S rRNA sequences : Explanation note: data were used for the Figure 16.
Supplementary material 2 from: Karanovic I, Sitnikova TY (2017) Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. ZooKeys 684: 19-56. https://doi.org/10.3897/zookeys.684.13249
p-distances between 18S rRNA sequences : Explanation note: data were used for the Figure 16.
Figure 7 from: Karanovic I, Sitnikova TY (2017) Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. ZooKeys 684: 19-56. https://doi.org/10.3897/zookeys.684.13249
Figure 7 - Line drawings Mazepovacandona navitarum (Mazepova, 1976). Male. A A1 B A2 C, D prehensile palps E L6 F L7 G hemipenis H UR. Scale = 0.1 mm.
Figure 5 from: Karanovic I, Sitnikova TY (2017) Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. ZooKeys 684: 19-56. https://doi.org/10.3897/zookeys.684.13249
Figure 5 - Line drawings of Mazepovacandona godlewski (Mazepova, 1984). Female. A A1 B First three segments of A2 C L6 D UR E L7 F penultimate and terminal segments of A2. Scales = 0.1 mm.
Figure 8 from: Karanovic I, Sitnikova TY (2017) Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. ZooKeys 684: 19-56. https://doi.org/10.3897/zookeys.684.13249
Figure 8 - SEM photographs of Mazepovacandona orbiculata (Mazepova, 1990). Male. A RV, lateral view B LV, lateral view C details of the anterior end RV D detail of the surface sensilla.
Figure 4 from: Karanovic I, Sitnikova TY (2017) Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. ZooKeys 684: 19-56. https://doi.org/10.3897/zookeys.684.13249
Figure 4 - SEM photographs of Mazepovacandona godlewski (Mazepova, 1984). Female. A RV, lateral view B LV, lateral view C details of the fine surface ornamentation D details of the posterior end of the RV.
Figure 2 from: Karanovic I, Sitnikova TY (2017) Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. ZooKeys 684: 19-56. https://doi.org/10.3897/zookeys.684.13249
Figure 2 - Line drawings of Mazepovacandona directa (Bronstein, 1947). Male. A A1 B A2 C Md-palp D Mxl-palp E, F prehensile palps G L6 H UR. Scales = 0.1 mm.
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