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202 results for “Lake Tanganyika”
FIGURES 506–511 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 506–511. Diploneis serrulata sp. nov., SEM external valve views, Lake Tanganyika. 506, 509, 510. Specimen from Isanga Bay. 507, 508, 511. Specimen from Chituta Bay. 506. View of a whole valve. 507. View of the whole frustule, white arrowed serrated valvocopula. 508. Close view of fin-like silica ridges. 509. Central area showing teardrop shaped depressions with proximal raphe ends; white arrowed inter-areolar semi-circular shaped fin ornamentations on the canal. 510. Raphe branch with proximal and distal ends bent to the same side of the valve. 511. Close view of uniseriate becoming biseriate striae; white arrowed the inter-areolar fin-like silica ridges serrated into ca. 8–12 notched edges. Scale bars = 5 μm (Figs 506, 507, 510), 2 μm (Figs 508, 509), 1 μm (Fig. 511).
FIGURES 288–293 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 288–293. Diploneis duplex sp. nov., SEM external valve views, Lake Tanganyika. 288, 291, 293. Specimens from Kiganza Bay. 289, 290. Specimen from Chituta Bay. 292. Specimen from Isanga Bay. 288, 293. View of a whole valve, showing canal structure, striae structure (white arrow), and inter-areolar fin-like shaped ornamentations. 289. Central area showing extended teardrop shaped depression with proximal raphe ends. 290, 291. Distal raphe ends with deflected terminal fissures. 292. White arrowed the biseriate striae in a broken specimen. Scale bars = 5 μm (Figs 288, 293), 2 μm (Figs 289–292).
FIGURES 442–456 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 442–456. Diploneis elongata sp. nov., LM valve views, Lake Tanganyika. 442. Specimen from Kasaba Bay. 443–446, 449– 452, 454–456. Specimens from Kalambo Falls Lodge. 447, 448, 453. Specimens from Kiganza Bay. Fig. 456. Holotype specimen. Scale bar = 10 μm.
FIGURES 419–433 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 419–433. Diploneis cocquytiana sp. nov., LM valve views, Lake Tanganyika. 419, 420, 422, 423–426, 428, 429, 431, 432. Specimens from Kalambo Falls Lodge. 421, 427, 430. Specimens from Kiganza Bay. 433. Specimen from Rukoma area. Fig. 429. Holotype specimen. Scale bar = 10 μm.
FIGURES 384–408 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 384–408. Diploneis clara sp. nov., LM valve views, Lake Tanganyika. 384, 385. Specimens from Jakobsen Beach. 386, 387, 396, 407, 408. Specimens from Kalambo Falls Lodge. 388, 389, 397, 398, 400, 404. Specimens from Isanga Bay. 390, 391, 392, 393. Specimens from Mutondwe Island. 394, 395, 402, 403, 406. Specimens from Kiganza Bay. 399. Specimen from Chituta Bay. 401, 405. Specimens from Ndole Bay. Fig. 399. Holotype specimen. Scale bar = 10 μm.
FIGURES 249–253 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 249–253. Diploneis disjuncta sp. nov., SEM external valve views, Lake Tanganyika. 249. Specimen from Kalambo Falls Lodge. 250–253. Specimen from Chituta Bay. 249. External and internal view of the whole frustule. 250. View of a whole valve, showing uniseriate striae at mid-valve (white arrow) and biseriate striae pattern at valve apices (black arrow). 251. Distal raphe ends with deflected terminal fissures. 252. Close view of cribra and areolae structure in a broken specimen. 253. Central area showing teardrop shaped depression with proximal raphe ends. Scale bars = 10 μm (Fig. 249), 5 μm (Figs 250, 253), 2 μm (Figs 251, 252).
FIGURES 258–287 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 258–287. Diploneis duplex sp. nov., LM valve views, Lake Tanganyika. 258, 259, 263–266, 269, 270, 273, 284. Specimens from Kalambo Falls Lodge. 260, 261, 271, 272, 274–281, 285–287. Specimens from Mahale National Park. 262, 282, 283. Specimens from Isanga Bay. 267, 268. Specimens from Ndole Bay. Fig. 269. Holotype specimen. Scale bar = 10 μm.
FIGURES 214–248 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 214–248. Diploneis disjuncta sp. nov., LM valve views, Lake Tanganyika. 214, 216–221, 223. Specimens from Isanga Bay. 215, 225, 228–235, 239–248. Specimens from Mahale National Park. 222. Specimen from Mutondwe Island. 224, 226, 227. Specimens from Kasaba Bay. 236–238. Specimens from Kalambo Falls Lodge. Fig. 224. Holotype specimen. Scale bar = 10 μm.
FIGURES 206–213 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 206–213. Diploneis lunata sp. nov., SEM external (Figs 206–209) and internal (Figs 210–213) valve views, Lake Tanganyika, Kiganza Bay. 206. View of a whole valve. 207. Central area with teardrop shaped proximal raphe ends. 208. Distal raphe ends with deflected terminal fissures. 209. Broken valve, showing the chambered wall structure. 210. View of a whole valve. 211. Central area with simple and slightly elevated proximal raphe ends. 212. Distal raphe endings slightly elevated and distant from the valve apices. 213. Detail alveoli openings covered by thin silica layers. Scale bars = 5 μm (Figs 206, 210), 2 μm (Figs 209, 211), 1 μm (Figs 207, 208, 212, 213).
FIGURES 186–192 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 186–192. Diploneis fossa sp. nov., SEM external valve views, Lake Tanganyika. 186, 187, 191, 192. Specimens from Mutondwe Island. 188–190. Specimen from Kiganza Bay. 186–188. View of a whole valve. 189. Detail valve apices, showing distal raphe ends with deflected terminal fissures and large round to rectangular areolae opened in deep pits. 190. Central area with teardrop depression with proximal raphe ends. 191. Close view of the areolae separated from each other with inter-areolar thickenings bearing fin-like silica ridges. 192. Distal raphe ends with deflected terminal fissures. Scale bars = 10 μm (Figs 186–188), 5 μm (Fig. 192), 2 μm (Figs 189, 191), 1 μm (Fig. 190).
FIGURES 193–205 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 193–205. Diploneis lunata sp. nov., LM valve views, Lake Tanganyika. 193. Specimen from Kalya Bay. 194, 196. Specimens from Mahale National Park. 195, 197, 199–205. Specimens from Kiganza Bay. 198. Specimen from Jakobsen Beach. Fig. 197. Holotype specimen. Scale bar = 10 μm.
FIGURES 152–171 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 152–171. Diploneis tenera sp. nov., LM valve views, Lake Tanganyika. 152, 154. Specimens from Isanga Bay. 153, 171. Specimens from Mahale National Park. 155–165, 167–169. Specimens from Kalambo Falls Lodge. 166, 170. Specimens from Kasaba Bay. Fig. 157. Holotype specimen. Scale bar = 10 μm.
FIGURES 344–348 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 344–348. Diploneis angusta sp. nov., SEM external (Figs 344, 345, 347, 348) and internal (Fig. 346) valve views, Lake Tanganyika. 344, 345, 347, 348. Specimens from Isanga Bay. 346. Specimen from Kalambo Falls Lodge. 344, 345. View of a whole valve. 346. Valve view, showing simple and slightly elevated proximal and distal raphe ends, alveolate openings, and valvocopula with serrated advalvar edges. 347. Close view of uniseriate striae (white arrow) and inter-areolar thickenings with fin-like shaped ornamentations. 348. Central area with extended linear teardrop shaped depression with proximal raphe ends. Scale bars = 10 μm (Fig. 346), 5 μm (Figs 344, 345), 2 μm (Figs 347, 348).
FIGURE 619. Scatter plot showing morphological differences between Diploneis species using 33 landmarks defining 21 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURE 619. Scatter plot showing morphological differences between Diploneis species using 33 landmarks defining 21 valve features corresponding to the points in Figure S1 and measured on about 30 valves of each species. Biplot of the first two principal components of the landmark analyses (75 % of variance explained) of all specimens analyzed, keyed by species in the legend.
FIGURES 577–581 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 577–581. Diploneis latissima sp. nov., SEM external (Figs 577–579) and internal (Figs 580, 581) valve views, Mulungushi River. 577. View of a whole frustule; white arrowed irregularly spaced and shaped round ornamentations along the raphe branch. 578. Detail view of the biseriate striae. 579. Close view of cribrate areolae becoming larger towards the valve mantle. 580. Valve view and valvocopula with serrated advalvar edges. 581. Close view of alveoli openings; note the striae pattern visible through the thin layers of silica occluding the alveoli. Scale bars = 5 μm (Figs 577, 580), 2 μm (Figs 579, 581), 1 μm (Fig. 578).
FIGURES 475–505 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 475–505. Diploneis serrulata sp. nov., LM valve views, Lake Tanganyika. 475, 479, 480, 485, 488, 490, 491–495, 498, 499, 501. Specimens from Kalambo Falls Lodge. 476–478, 481, 482. Specimens from Mutondwe Island. 483, 484, 486. Specimens from Mahale National Park. 487, 489, 497, 504. Specimens from Kasaba Bay. 496. Specimen from Jakobsen Beach. 500, 502, 503. Specimens from Isanga Bay. 505. Specimen from Chituta Bay. Fig. 478. Holotype specimen. Scale bar = 10 μm.
FIGURES 518–543 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 518–543. Diploneis dissipata sp. nov., LM valve views. 518–520. Lake Tanganyika, Rukoma area. 521–543. Specimens from the type material, Mulungushi River. Fig. 526. Holotype specimen. Scale bar = 10 μm.
FIGURES 462–474 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 462–474. Diploneis decora sp. nov., LM (Figs 462–471) and SEM external (Figs 472–474) valve views, Lake Tanganyika. 462, 463, 467. Specimens from Cape Nangu at Kasaba Bay. 464–466, 468–474. Specimens from Mahale National Park. Fig. 466. Holotype specimen. 472. View of a whole valve. 473. Half valve, showing canal areolae arranged in oblong circles (white arrow). 474. Distal raphe end with deflected terminal fissure. Scale bars = 10 μm (Figs 462–472), 5 μm (Fig. 473), 3 μm (Fig. 474).
FIGURES 614–618 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 614–618. Diploneis limosa sp. nov., SEM internal valve views, Lake Mweru Wantipa. 614. View of a whole valve. 615. Close view of the alveoli occluded by thin silica layers. 616. Half-valve, showing the slightly elevated proximal and distal raphe ends. 617. Central area with proximal raphe ends. 618. Close view of the simple and slightly elevated proximal raphe ends. Scale bars = 5 μm (Fig. 614), 2 μm (Figs 616, 617), 1 μm (Figs 615, 618).
FIGURES 512–517 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 512–517. Diploneis serrulata sp. nov., SEM internal valve views, Lake Tanganyika. 512, 515–517. Specimen from Mutondwe Island. 513, 514. Specimen from Kiganza Bay. 512, 513. View of a whole valve. 514. Mid-valve, showing alveoli structure and simple proximal raphe ends. 515. Distal raphe endings slightly elevated and distant from the valve apices. 516. Detail opening of the alveoli covered by thin silica layers. 517. Close view of the central area and the proximal raphe ends. Scale bars = 5 μm (Figs 512, 513), 2 μm (Figs 514–517).
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