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202 results for “Lake Tanganyika”
FIGURES 544–548 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 544–548. Diploneis dissipata sp. nov., SEM external (Figs 544–545) and internal (Figs 546–548) valve views, Mulungushi River. 544. View of a whole frustule, showing canal structure and striae ornamentation. 545. Close view of biseriate striae with interareolar fin-like silica ridges. 546. View of a broken valve, showing the internal structure of the valve; note the simple and slightly elevated proximal and distal raphe ends. 547. Close view of internal and external striae structure. 548. Detail view of the simple and slightly elevated proximal raphe end. Scale bars = 10 μm (Fig. 546), 5 μm (Fig. 544), 2 μm (Figs 545, 547, 548).
FIGURES 439–441 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 439–441. Diploneis cocquytiana sp. nov., SEM internal valve views, Lake Tanganyika, Mutondwe Island. 439. A whole valve. 440. Detail valve apices, showing simple and slightly elevated distal raphe ends and openings of the alveoli covered by thin silica layer. 441. Central area with simple and slightly elevated proximal raphe ends. Scale bars = 10 μm (Fig. 439), 5 μm (Figs 440, 441).
FIGURES 254–257 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 254–257. Diploneis disjuncta sp. nov., SEM internal valve views, Lake Tanganyika. 254, 256, 257. Specimen from Kalambo Falls Lodge. 255. Specimen from Mutondwe Island. 254, 255. View of a whole valve, showing raphe structure, alveoli structure, and valvocopula with serrated advalvar edge. 256. Detail mid-valve, showing simple and slightly elevated proximal raphe ends and alveoli occluded by thin silica layers. 257. Half-valve, showing raphe branch and uniseriate becoming biseriate striae. Scale bars = 10 μm (Fig. 254), 5 μm (Figs 255, 257), 2 μm (Fig. 256).
FIGURES 178–185 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 178–185. Diploneis fossa sp. nov., LM valve views, Lake Tanganyika. 178, 179, 181, 182. Specimens from Mutondwe Island. 180, 183–185. Specimens from Isanga Bay. Fig. 184. Holotype specimen. Scale bar = 10 μm.
FIGURES 567–576 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 567–576. Diploneis latissima sp. nov., LM valve views. All individuals displayed from the type material, Mulungushi River. Fig. 575. Holotype specimen. Scale bar = 10 μm.
FIGURES 582–608 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 582–608. Diploneis limosa sp. nov., LM valve views. All individuals displayed from the type material, Lake Mweru Wantipa. Fig. 583. Holotype specimen. Scale bar = 10 μm.
FIGURES 609–613 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 609–613. Diploneis limosa sp. nov., SEM external valve views, Lake Mweru Wantipa. 609, 611. View of a whole frustule. 610. Detail mid-valve, showing teardrop shaped depression with proximal raphe ends bent to the same side of the valve. 612. Close view of uniseriate becoming biseriate striae pattern. 613. Detail valve apices, showing the distal raphe ends with deflected terminal fissures. Scale bars = 5 μm (Figs 609, 611), 2 μm (Figs 610, 612, 613).
FIGURES 172–177 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 172–177. Diploneis tenera sp. nov., SEM external (Figs 172, 173) and internal (Figs 174–177) valve views, Lake Tanganyika. 172, 173. Specimen from Isanga Bay. 174–177. Specimen from Kalambo Falls Lodge. 172. A whole valve, showing raphe structure and inter-areolar thickenings with serrated fin-like silica ridges. 173. Close view of areolae structure and distal raphe ends with deflected terminal fissures. 174. View of a corroded valve, showing raphe structure, alveoli structure, and valvocopula with serrated advalvar edges. 175. Detail mid-valve, showing simple and slightly elevated proximal raphe ends. 176. Alveoli with corroded thin silica layers showing uniseriate becoming biseriate striae; valvocopula with serrated edge. 177. Distal raphe ends simple and slightly elevated. Scale bars = 10 μm (Fig. 172), 5 μm (Fig. 174), 2 μm (Figs 173, 175), 1 μm (Figs 176, 177).
FIGURES 142–147 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 142–147. Diploneis tessellata sp. nov., SEM external valve views, Lake Tanganyika. 142, 144, 145. Specimen from Kiganza Bay. 143, 146, 147. Specimens from Isanga Bay. 142, 143. View of a whole valve; white arrowed uniseriate striae pattern. 144. Distal raphe ends with deflected terminal fissures. 145. Detail semi-circular shaped interalveolar fin ornamentations on the canal. 146. Central area with bent teardrop depression with proximal raphe ends. 147. Half-valve showing the raphe branch. Scale bars = 10 μm (Fig. 143), 5 μm (Figs 142, 147), 2 μm (Figs 144–146).
FIGURES 148–151 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 148–151. Diploneis tessellata sp. nov., SEM internal valve views, Lake Tanganyika. 148. Specimen from Mutondwe Island. 149. Specimen from Kalambo Falls Lodge. 150. Specimen from Isanga Bay. 151. Specimen from Rukoma area. 148–151. View of a whole valve, showing simple and slightly elevated raphe, alveoli covered by a thin silica layer, and closed longitudinal canal. Scale bar = 10 μm.
FIGURES 97–101 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 97–101. Diploneis latiuscula sp. nov., SEM external valve views, Lake Tanganyika, Jakobsen Beach. 97. Whole valve. 98. Distal raphe ends with deflected terminal fissures. 99. White arrowed uniseriate becoming biseriate striae pattern. 100. Detail areolae structure and inter-areolar thickenings with serrated fin-like silica ridges. 101. Central area with recessed proximal raphe ends. Scale bars = 10 μm (Fig. 97), 2 μm (Figs 98, 100, 101), 1 μm (Fig. 99).
FIGURES 126–131 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 126–131. Diploneis tumida sp. nov., SEM external (Figs 126–128) and internal (Figs 129–131) valve views, Lake Tanganyika. 126. Specimen from Mutondwe Island. 127, 128. Specimen from Kiganza Bay. 129–131. Specimen from Isanga Bay. 126. Whole valve. 127. Distal raphe ends with deflected terminal fissures and areolae opened in deep pits; note the inter-areolar fin-like silica ornamentations (white arrow). 128. Central area with extended teardrop shaped depression with proximal raphe ends. 129. Central area with slightly elevated proximal raphe ends and alveolate openings occluded by a thin silica layer. 130. View of a whole valve. 131. Distal raphe ends slightly elevated and distant from the valve apices. Scale bars = 10 μm (Fig. 130), 5 μm (Figs 126, 129, 131), 1 μm (Figs 127, 128).
FIGURES 57–60 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 57–60. Diploneis cristata sp. nov., SEM internal valve views, Lake Tanganyika, Isanga Bay. 57. Whole valve. 58. Central area with simple and slightly elevated proximal raphe ends. 59. Mid-valve, showing proximal raphe ends and alveolate openings covered by a thin silica layer. 60. Close view of alveoli and valvocopula with serrated advalvar edges. Scale bars = 10 μm (Fig. 57), 5 μm (Figs 58–60).
FIGURES 67–72 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72).
FIGURES 36–40 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 36–40. Diploneis tanganyikae sp. nov., SEM external valve views, Lake Tanganyika. 36, 38–40. Specimen from Kiganza Bay. 37. Specimen from Mutondwe Island. 36, 37. View of a whole valve. 38. Central area with extended teardrop shaped depression with proximal raphe ends. 39. Detail valve apices, showing distal raphe ends with deflected terminal fissures and inter-areolar thickenings bearing fin-like silica ridge ornamentations; note white arrowed areolae divided by thick thickenings also bearing silica ornamentations. 40. White arrowed large round to rectangular areolae covered by cribra. Scale bars = 10 μm (Figs 36, 37), 2 μm (Figs 38–40).
FIGURES 79–84 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 79–84. Diploneis gigantea sp. nov., SEM external (Figs 79–81) and internal (Figs 82–84) valve views, Lake Tanganyika. 79–81. Specimen from Isanga Bay. 82–84. Specimen from Mutondwe Island. 79. Whole valve. 80. Central area with teardrop shaped depression with proximal raphe ends. 81. Distal raphe ends with deflected terminal fissures; white arrowed areola divided by thickened bars. 82. Half-valve view, showing the curved raphe placed in a depression formed by the canal. 83. Whole valve view. 84. Central area with simple slightly elevated proximal raphe ends. Scale bars = 20 μm (Fig. 79), 10 μm (Figs 82, 83), 5 μm (Figs 80, 81, 84).
FIGURES 47–52 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 47–52. Diploneis cristata sp. nov., LM valve views, Lake Tanganyika. 47, 49–52. Specimens from Kalambo Falls Lodge. 48. Specimen from Chituta Bay. Fig. 48. Holotype specimen. Scale bar = 10 μm.
FIGURES 2–11 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 2–11. Diploneis salzburgeri sp. nov., LM valve views, Lake Tanganyika. 2, 3, 5, 6, 9. Specimens from southern parts of Lake Tanganyika, Kalambo Falls Lodge. 4. Specimen from Kalya Bay. 7. Specimen from Ndole Bay. 8. Specimen from Jakobsen Beach, near Kigoma. 10, 11. Specimens from Buhingu Island. Fig. 7. Holotype specimen. Scale bar = 10 μm.
FIGURES 53–56 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 53–56. Diploneis cristata sp. nov., SEM external valve views, Lake Tanganyika. 53, 55. Specimen from Isanga Bay. 54, 56. Specimen from Ndole Bay. 53. Whole valve. 54. Close view of striae structure; arrowed areola divided by thick thickenings bearing fin-like silica ridges. 55. Central area with extended teardrop shaped depressions with proximal raphe ends. 56. Distal raphe ends with deflected terminal fissures. Scale bars = 10 μm (Fig. 53), 5 μm (Figs 55, 56), 2 μm (Fig. 54).
FIGURES 108–125 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 108–125. Diploneis tumida sp. nov., LM valve views, Lake Tanganyika. 108, 116–125. Specimens from Ndole Bay. 109, 112–115. Specimens from Mahale National Park. 110. Specimen from Kalambo Falls Lodge. 111. Specimen from Mutondwe Island. Fig. 109. Holotype specimen. Scale bar = 10 μm.
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