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609 results for “morphometric analysis”
FIGURE 9. Tetraglochin inermis—a in Taxonomic revision of the genus Tetraglochin (Rosaceae, Rosoideae) and morphometric analysis of its species
FIGURE 9. Tetraglochin inermis—a general aspect of the plant; b detail of a leaf of a macroblast, showing the sheating base and the leaflets (petiole-rachis axis absent); c detail of a flower and leaves; d globose hypanthium with narrow wings, covering the fruit; e trasversal section of the hypanthium and fruit. a–e from Zuloaga et al. 13169.
Data from: Morphometric analysis of the rattan Calamus javensis complex (Arecaceae: Calamoideae)
Calamus javensis (Calamoideae) is a slender rattan common in tropical rainforests. The species is very polymorphic and forms a species complex together with some undetermined forms and the species C. acuminatus, C. amplijugus, C. congestiflorus, C. corrugatus, C. elopurensis, C. hypertrichosus, C. impar, and C. tenompokensis.Within the complex, themorphological variation and similarities among the entities are too difficult to solve with traditional morphological observation. Therefore, two multivariate analyses, MDS (multidimensional scaling) and hierarchical cluster analysis (HCA) with UPGMA (unweighted pair group method with arithmetic mean) were used for two datasets, quantitative data only and in combination with qualitative data. The inclusion of qualitative characters did not make significant differences in the cluster results. Of all nine taxa included in the complex, only two clusters resulted from the analysis next to two forms based on few specimens. Only C. tenompokensis was recognized as a separate cluster, while all other taxa were combined into one typical C. javensis cluster. Morematerial may result in the recognition of the two forms as distinct species.
FIGURE 4 in Morphometric analysis to differentiate taxonomically seven species of Eleutherodactylus (Amphibia: Anura: Leptodactylidae) from an Andean cloud forest of Colombia
FIGURE 4. Side of Eleutherodactylus head showing how tympanumeye distance and tympanum diameter were measured.
FIGURE 2. A in Morphometric analysis to differentiate taxonomically seven species of Eleutherodactylus (Amphibia: Anura: Leptodactylidae) from an Andean cloud forest of Colombia
FIGURE 2. A. Cluster analysis CA2. Data set included 58 cases (only adult individuals) and 40 qualitative variables. B. Cluster analysis CA3. Data set included 58 cases (only adult individuals) and the diagnostic variables for the Eleutherodactylus species. In parenthesis, number of individuals of each species.
FIGURE 3. Discriminant analysis. Data set included 140 in Morphometric analysis to differentiate taxonomically seven species of Eleutherodactylus (Amphibia: Anura: Leptodactylidae) from an Andean cloud forest of Colombia
FIGURE 3. Discriminant analysis. Data set included 140 of four species (Eleutherodactylus douglasi, E. merostictus, E. miyatai and E. prolixodiscus) and 11 quantitative variables. The model utilized stepwise discrimination in which all variables were included in the model and then, at each step, the variable that contributed least to the prediction of group memberships was eliminated.
FIGURE 1 in Morphometric analysis to differentiate taxonomically seven species of Eleutherodactylus (Amphibia: Anura: Leptodactylidae) from an Andean cloud forest of Colombia
FIGURE 1. Cluster analysis CA1. Data set included 159 cases (all individuals) and 40 qualitative variables. It was analyzed with Manhattan distances and the UPGMA algorithm; missing data were not substituted. In parenthesis, number of individuals of each species.
FIGURE 1 in Morphometrical analysis, histology, and taxonomy of Thyroscyphus ramosus (Cnidaria, Hydrozoa) from the coast of Brazil
FIGURE 1: Map of Brazil, showing collecting sites (AóCeará state; BóRio Grande do Norte state; CóPernambuco state; DóSergipe state; EóBahia state; FóSão Paulo state, collection at São Sebastião, Caraguatatuba and Ubatuba)
FIGURES 9–20 in Morphometrical analysis, histology, and taxonomy of Thyroscyphus ramosus (Cnidaria, Hydrozoa) from the coast of Brazil
FIGURES 9–20: Scanning electron micrographs of Thyroscyphus ramosus Allman, 1877. 9—Hydrotheca with elongated pedicel and prominent node (scale 500µm); 10—Overall view of the hydrotheca and protruded hydranth (scale 500µm); 11—Detail of the hypostome and surrounding tentacles (scale 100µm); 12—Detail of tentacles and batteries of nematocysts forming rings along each tentacle (scale 200µm); 13—Detail of the tentacular tip with concentrated nematocysts (scale 150µm); 14—Hydrothecal opening with a fourvalve operculum (scale 200µm); 15—Pedicel, apophysis and node (scale 200µm); 16—Section of the hydrocaulus showing the perisarc and internal coenosarc (scale 100µm); 17—Detail of the gonotheca base (scale 200µm); 18—Gonotheca next to hydrotheca (scale 1000µm); 19—Detail of gonotheca (scale 1000µm); 20—Detail of the distal region of the gonotheca (scale 150µm). (Apo—apophysis; C—coenosarc; Gt—gonotheca; Ht— hydrotheca; Hyp—hypostome; N—node; P—perisarc; Ped—pedicel)
FIGURES 21–28 in Morphometrical analysis, histology, and taxonomy of Thyroscyphus ramosus (Cnidaria, Hydrozoa) from the coast of Brazil
FIGURES 21–28: Histology of Thyroscyphus ramosus Allman, 1877. 21—Transverse section of the gonophore showing two layered epidermis, gonadogenic cells and gonotheca (scale 500µm); 22—Transverse section of the hydranth and hydrotheca with epidermal lining (scale 100µm); 23—Transverse section of the hydranth with epidermis, gastrodermis, and mesoglea (scale 60µm); 24—Transverse section of the distal region of the hypostome with gland cells and surrounded by tentacles (scale 100µm); 25—Longitudinal section of the oral region with tentacles and hypostome (scale 100µm); 26óDetail of the operculum (scale 50µm) 27—Longitudinal section of the hydranth and hydrotheca, the epidermal lining, gastrovascular cavity, gland cells of hypostome, tentacles, and operculum (scale 300µm); 28—Longitudinal section of the pedicel, base of the hydrotheca (scale 300µm). (Cav—gastrovascular cavity; Epi—epidermis; EpiL—epidermal lining; Gas—gastrodermis; Gc—gonadogenic cells; Glc—gland cells; Gt—gonotheca; Ht—hydrotheca; Hyd—hydranth; Hyp—hypostome; Mes—mesoglea; Op—operculum; Tent—tentacles.)
FIGURES 5–8 in Morphometrical analysis, histology, and taxonomy of Thyroscyphus ramosus (Cnidaria, Hydrozoa) from the coast of Brazil
FIGURES 5–8: Representations of Thyroscyphus ramosus Allman, 1877. 5—Stem with hydrothecae (scale 1mm); 6—Hydrotheca (scale 1mm); 7óHydrotheca and hydranth (scale 1mm); 8—Gonophore and hydrotheca (scale 1mm).
FIGURE 29 in Morphometrical analysis, histology, and taxonomy of Thyroscyphus ramosus (Cnidaria, Hydrozoa) from the coast of Brazil
FIGURE 29. Correspondence analysis graph for morphometrical parameters of specimens of Thyroscyphus ramosus from different localities along the Brazilian coast.
FIGURES 2–4 in Morphometrical analysis, histology, and taxonomy of Thyroscyphus ramosus (Cnidaria, Hydrozoa) from the coast of Brazil
FIGURES 2–4: General aspects of Thyroscyphus ramosus Allman, 1877. 2—Hydrotheca distribution along colony (scale 2000µm); 3—Detail of the hydranth protruded from hydrotheca (scale 1000µm); 4—Detail of pedicel, base of the hydrotheca (scale 500µm).
FIGURE 4. A in Pinellia hunanensis (Araceae), a new species supported by morphometric analysis and DNA barcoding
FIGURE 4. A classification tree of combined rbcL and matK data using neighbor-joining (NJ) and Bayesian of phylogenetic methods.
FIGURE 5 in Pinellia hunanensis (Araceae), a new species supported by morphometric analysis and DNA barcoding
FIGURE 5. Scatter plot of the first two axes from a detrended correspondence analysis (DCA) for 38 quantitative morphological variables (taxonomic characters) of 24 specimens (classification of 6 Pinellia species). The new species Pinellia hunanensis is circled, including its respective intraspecific variation.
FIGURE 2. Pinellia hunanensis—A in Pinellia hunanensis (Araceae), a new species supported by morphometric analysis and DNA barcoding
FIGURE 2. Pinellia hunanensis—A: habit; B: juvenile plant; C: leaf; D: inflorescence; E: spadix; F: infructescence; G: pistil; H: fruit; I: seed (Drawn after the holotype by Yitao Liu).
Data for morphometric analysis and DNA barcode sequence for the new fish species Polymixia hollisterae
<p>Two datasets are provided to support the journal article (https://doi.org/10.1643/i2020112) by T. C. Grande and M. V. H. Wilson naming the new Bermuda fish species <em>Polymixia hollisterae</em>. The first dataset is for 2-D multivariate morphometric comparisons of selected specimens and species of the fish genus <em>Polymixia</em>. The file is in TPS format, as a plain text file, for use in the application MorphoJ. The data are for 27 specimens with pixel coordinates for 34 landmarks digitized in ImageJ and used to generate Fig. 13 in the referenced publication. The second dataset, published here courtesy of Dr. R. Eytan, is a mitochondrial DNA barcode sequence in fasta format for the second paratype specimen, a small juvenile of the new species. The specimen is only the third one known of the new species and the only one not from Bermuda. It was collected in the north-central Gulf of Mexico and is now deposited in the Harvard University MCZ fish collection as catalog number MCZ 174218. The fasta file can be used as input to the barcode identification function at boldsystems.org, although its original identification in BOLD was incorrect.</p>
Figure 1. Sheared principal component analysis plot depicting morphometric variation among Cambarus aff. dubius, C. pauleyi, C in Cambarus loughmani, a new species of crayfish (Decapoda: Cambaridae) endemic to the pre-glacial Teays River Valley in West Virginia, USA
Figure 1. Sheared principal component analysis plot depicting morphometric variation among Cambarus aff. dubius, C. pauleyi, C. loughmani, and nominate C. dubius.
Figure 3 in Taxonomic revision of the Hydroporus bodemeyeri species complex (Coleoptera: Dytiscidae) with a geometric morphometric analysis of body shape within the group
Figure 3. Average landmark configuration and body shape of (A) Hydroporus anatolicus anatolicus; (B) H. anatolicus koksali ssp. nov.; (C) H. kurdistanicus sp. nov.; (D) H. bodemeyeri guignoti; (E) H. bodemeyeri bodemeyeri; (F) H. bodemeyeri cariaensis ssp. nov.; (G) H. cuprescens.
Figure 2 in Taxonomic revision of the Hydroporus bodemeyeri species complex (Coleoptera: Dytiscidae) with a geometric morphometric analysis of body shape within the group
Figure 2(A–L). Median lobe in lateral and ventral view of (A) Hydroporus anatolicus anatolicus; (C) H. anatolicus koksali ssp. nov.; (E) H. bodemeyeri bodemeyeri; (G) H. bodemeyeri cariaensis ssp. nov.; (H) H. bodemeyeri guignoti; (I) H. cuprescens; (K) H. kurdistanicus sp. nov. Paramere of (B) Hydroporus anatolicus anatolicus; (D) H. anatolicus koksali ssp. nov.; (F) H. bodemeyeri bodemeyeri; (J) H. cuprescens; (L) H. kurdistanicus sp. nov.
Figure 4 in Taxonomic revision of the Hydroporus bodemeyeri species complex (Coleoptera: Dytiscidae) with a geometric morphometric analysis of body shape within the group
Figure 4(A–C). Canonical variate analysis (CVA) on the specimen coordinates for body shape. Body shape variation along the first (x) and second (y) axis is depicted by superimposed extreme body shapes (black lines: negative sides of the axes; grey lines: positive sides of the axes). (A) all taxa examined; (B) group A: "anatolicus-kurdistanicus group"; (C) group B: the "bodemeyeri-cuprescens group".
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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