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437 results for “morphological variability”
FIGURE 1 in Variability of Echiniscus tristis Gąsiorek & Kristensen, 2018 - is morphology sufficient for taxonomic differentiation of Echiniscidae?
FIGURE 1. Echiniscus tristis Gąsiorek & Kristensen, 2018 (population from Madagascar)—voucher exoskeletons (hologeno- phores) of specimens used in DNA isolation, PCM:—A—voucher No MAD/139/3/S, B—voucher No MAD/139/12/S, C— voucher No MAD/139/2/S, D—voucher No MAD/139/9/S, E—voucher No MAD/139/10/S, F—voucher No MAD/139/8/S. Scale bars in micrometres [μm].
FIGURE 2 in Variability of Echiniscus tristis Gąsiorek & Kristensen, 2018 - is morphology sufficient for taxonomic differentiation of Echiniscidae?
FIGURE 2. Echiniscus tristis Gąsiorek & Kristensen, 2018 (population from Madagascar)—habitus: A—dorso-ventral assembled image (PCM); insert shows close-up on split lateral cirrus C; B–D—specimens with different chaetotaxy (PCM); E–F—specimens with different chaetotaxy (SEM); arrowheads indicate positions of dorsal and lateral cirri. Scale bars in micrometres [μm].
Fig. 4 in Variability on microevolutionary and macroevolutionary scales: a review on patterns of morphological variation in Cnidaria Medusozoa
Fig. 4 Schematic summary of levels of morphological variation found in medusozoans, including the absence of variation (cryptic species). Clades indicate different lineages, colors and shades represent the phenotype in current time, and the circles represent individuals. Note that there is individual variation (arrows) and it can parallel intraspecific variation. The same occurs with interspecific variation, which can parallel intraspecific variation in b
Fig. 1 in Variability on microevolutionary and macroevolutionary scales: a review on patterns of morphological variation in Cnidaria Medusozoa
Fig. 1 Intracolony variation in Orthopyxis sargassicola (Nutting, 1915) based on three polyps randomly sampled from a single colony (MZUSP4079, see Online Resource 1). a Measurements (in μm) of total length of trophosome (Tr), length of pedicel (Pd), hydrothecal length (Hd), and diameter at margin (Diam); b measurements (in μm) of maximum perisarc (Ps) thickness (Thick) of hydrotheca and pedicel at medial portion, as well as maximum number of sinuosities (NS) in pedicel and number of hydrothecal cusps (NC); c, d polyps of O. sargassicola from a single colony (both polyps are at the same position of maximum perisarc thickness). Note the differences in size and shape of the pedicels (Pd) and hydrotheca (Hd), as well as the perisarc thickness (Ps) and sinuosities of the pedicel (S)
Fig. 1 in Hidden diversity in the morphologically variable script lichen (Graphis scripta) complex (Ascomycota, Ostropales, Graphidaceae)
Fig. 1 Morphotypes within Graphis scripta complex. The identification of morphotypes followed Neuwirth and Aptroot (2011). S Graphis scripta morphotype (Bachmann 8.210), S/B G. scripta-betuliga intermediate morphotype (Dornes K_OA 4411), B G. betuliga morphotype (John 8.144), S/P G. scripta-pulverulegta morphotype (John 8.150), S/M G. scripta-macrocarpa morphotype (Lendemer
FIGURES 471–477 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 471–477. SEM micrographs of Achnanthidium lusitanicum Novais & M.Morais, sp. nov. from Boeiro, Sertã Stream (Tejo basin), 09-07-2006 (324/06). 471. Raphe valve in external view. 472. Raphe valve in internal view. 473. Rapheless valve in external view. 474. Rapheless valve in internal view. 475. Detail of the central area of a raphe valve, with the straight, not expanded, proximal raphe pores. 476. Detail of the apex of a raphe valve in external view, with the raphe ending not expanded and slightly deflected. 477. Detail of the apex of a raphe valve in internal view, with the distal raphe ending terminating in a small helictoglossa and the areolae covered by hymenes. Scale bars = 1 μm.
FIGURES 159–162 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 159–162. SEM micrographs of the type material of Achnanthes minutissima var. cryptocephala Grunow in Van Heurck (Van Heurck Types du Synopsis 238). 159. External view of a raphe valve, with the central area as a rectangular fascia. 160. Internal view of a raphe valve, with the central area as a rectangular fascia. 161. External view of a rapheless valve. 162. Internal view of a rapheless valve. Scale bars = 1 μm.
FIGURES 399–402 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 399–402. SEM micrographs of Achnanthidium duriense Novais & Ector, sp. nov. from A-do-Bispo, Torto River, Douro basin, 18-08-2007 (129/07). 399. Raphe valve in girdle view, with the row of slit-like areolae on the mantle clearly visible. 400. Detail of a raphe valve in external view, with the proximal raphe ends drop-shaped and slightly deflected unilaterally. 401. Detail of a raphe valve in external view. 402. Detail of a rapheless valve in external view, with the rounded areolae on the valve and the slit-like areolae on the mantle, including the apex. Scale bars = 1 μm.
FIGURES 259–262 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 259–262. SEM micrographs of Achnanthidium nanum (F.Meister) Novais & Jüttner, comb. nov. from Côja, Alva River (Mondego basin), 11–06–2007 (325/07). 259. Raphe valve in external view. 260. Raphe valve in internal view. 261. Rapheless valve in external view. 262. Rapheless valve in internal view. Scale bars = 1 μm.
FIGURES 386–389 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 386–389. SEM micrographs of Achnanthidium pseudolineare Van de Vijver, Novais & Ector from Covas, Coura River, Minho basin, 21–09–2007 (224/07). 386. Raphe valve in external view. 387. Raphe valve in internal view. 388. Rapheless valve in external view. 389. Rapheless valve in internal view, showing raphe vestiges. Scale bars = 1 μm.
FIGURES 140–144 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 140–144. SEM micrographs of the type material of Achnanthes minutissima Kütz. (isotype material, Kützing's Algarum Aquae Dulcis Germanicarum, Decade VIII, no. 75, Kützing 301). 140. External view of a raphe valve. 141. Internal view tilted of a raphe valve. 142. External view of a rapheless valve. 143. Internal view of a rapheless valve. 144. External view of a rapheless valve in girdle view showing the elongated, almost always slit-like, areolae of the single row along the mantle. Scale bars = 1 μm.
FIGURES 2–139 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 2–139. LM micrographs of the type material. 2–55. Achnanthes minutissima Kütz. (isotype material, Kützing's Algarum Aquae Dulcis Germanicarum, Decade VIII, no. 75, Kützing 301). 56–79. Achnanthidium microcephalum Kütz. (isotype material, Herb. Kützing n° 287). 80–125. Achnanthes minutissima var. cryptocephala Grunow in Van Heurck (Van Heurck Types du Synopsis 238). 126–139. Achnanthes minutissima var. inconspicua Østrup (Østrup collection, 753-2).
FIGURES 467–470 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 467–470. SEM micrographs of Achnanthidium lusitanicum Novais & M.Morais, sp. nov., from Janeiro de Baixo, Zêzere River (Tejo basin), 08-07-2006 (394/06). 467. Raphe valve in external view. 468. Raphe valve in internal view. 469. Rapheless valve in external view. 470. Rapheless valve in internal view. Scale bars = 1 μm.
FIGURE 1 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURE 1. Location of Portuguese Achnanthidium species. White star: A. nanum; white diamond: A. pseudolineare; white square: A. lusitanicum; white circle: A. duriense.
FIGURES 270–379 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 270–379. LM micrographs of Achnanthidium pseudolineare and A. duriense Novais & Ector, sp. nov. (holotype population). 270–290. Achnanthidium pseudolineare from Portela do Homem, Homem River, Cávado basin, 26-09-2007 (34/07). 291–333. Achnanthidium pseudolineare from Covas, Coura River, Minho basin, 21-09-2007 (224/07). 334–379. Achnanthidium duriense from Ado-Bispo, Torto River, Douro basin, type locality, 18-08-2007 (129/07). 343 is of the holotype. Scale bar = 10 μm.
FIGURES 263–269 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 263–269. SEM micrographs of Achnanthidium nanum (F.Meister) Novais & Jüttner, comb. nov. from Himalayan streams, M62, K52, Helan 16 (NMW.C.2007.006.M62, NMW.C.2007.006.K52, NMW.C.2007.006.He16). 263, 265. Raphe valves in external view. 264, 267. Rapheless valves in external view. 266. Rapheless valve in internal view. 268. Raphe valve in internal view. 269. Complete frustule in girdle view. Scale bars = 1 μm.
FIGURES 153–158 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 153–158. SEM micrographs of the type material of Achnanthidium microcephalum Kütz. (isotype material, Herb. Kützing n° 287). 153. External view of a raphe valve. 154. Internal view of a raphe valve. 155, 157. External view of a rapheless valve. 156. Internal view of a rapheless valve. 158. External view of a raphe valve in girdle view, with the slit-like areolae in the mantle clearly visible. Scale bars = 1 μm.
FIGURES 171–174 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 171–174. SEM micrographs of the type material of Achnanthes minutissima var. inconspicua Østrup (Østrup collection, 753–2). 171. External view of a raphe valve, with central area as a rectangular fascia. 172. Internal view of a raphe valve. 173. External view of raphe valve with a single row of slit-like areolae, clearly visible on the mantle. 174. External view of a rapheless valve. Scale bars = 1 μm.
FIGURES 403–466 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 403–466. LM micrographs of Achnanthidium lusitanicum Novais & M.Morais, sp. nov. 403–445. Janeiro de Baixo, Zêzere River (Tejo basin), 08–07–2006 (394/06), type locality; 443 is of the holotype. 446–466. Boeiro, Sertã Stream (Tejo basin), 09-07-2006 (324/06). Scale bar = 10 μm.
FIGURES 380–385 in Morphological variability within the Achnanthidium minutissimum species complex (Bacillariophyta): comparison between the type material of Achnanthes minutissima and related taxa, and new freshwater Achnanthidium species from Portugal
FIGURES 380–385. SEM micrographs of Achnanthidium pseudolineare Van de Vijver, Novais & Ector from Portela do Homem, Homem River, Cávado basin, 26-09-2007 (34/07). 380. Raphe valve in external view. 381. Raphe valve in internal view. 382. Rapheless valve in external view. 383. Rapheless valve in internal view. 384. Detail of a raphe valve in external view, with the straight, not expanded, proximal pores and distal ending. The elongated, mostly slit-like areolae on the mantle are clearly visible. 385. Detail of a raphe valve in internal view, with the straight raphe ending, terminating in a small helictoglossa. Scale bars = 1 μm.
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