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1,104 results for “morphological variation”
FIGURE 10 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 10. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the holotype of Atractus latifrons (BM 1946.1.6.52). Scale = 10 mm.
FIGURE 3 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 3. Variation of "tricolor in dyads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MPEG 17460) from Balbina Plant Hydroelectric, municipality of Presidente Figueiredo, state of Amazonas, Brazil. Scale = 10 mm.
FIGURE 9. Bivariate plots with 95 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 9. Bivariate plots with 95% confidence regions for the first two axes derived from scores of discriminant analyses for males (A) and females (B) of Atractus latifrons.
FIGURE 6 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 6. Dorsal and ventral views of the specimens with undefined patterns. Red body, no black spots (MZUSP 8462) (A), red body with two black bands in posterior region (FMT 1249) (B), and red body with three triads arrangements (FMT 2162) (C).
FIGURE 5 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 5. "Tricolor in tetrads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MPEG 17548) from Balbina Power Plant Hydroelectric, municipality of Presidente Figueiredo, state of Amazonas, Brazil. Scale = 10 mm.
FIGURE 7 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 7. Geographical frequency distribution of color patterns in Atractus latifrons. TRD = tricolor in dyads; TRT = tricolor in tetrads; and BIM = bicolor in monads.
FIGURE 1 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 1. "Bicolor in monads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MPEG 20363) from Parque Estadual Guarajá Mirim, municipality of Espigão d' Oeste, state of Rondônia, Brazil. Scale = 10 mm.
FIGURE 2 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 2. "Tricolor in dyads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MZUSP 6594) from Jurupá River, state of Amazonas, Brazil. Scale = 10 mm.
FIGURE 4 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 4. Variation of "tricolor in dyads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MPEG 19261) from municipality of Porto Urucu, state of Amazonas, Brazil. Scale = 10 mm.
FIGURE 8 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 8. Sulcate (left) and asulcate (right) views of the hemipenis for all recognized color patterns in Atractus latifrons. (A) MPEG 17548, from Balbina Power Plant Hydroelectric, municipality of Presidente Figueiredo, state of Amazonas, Brazil; (B) UFMT 3698, from municipality of Cláudia, state of Mato Grosso, Brazil; (C) MPEG 17564, Balbina Power Plant Hydroelectric, municipality of Presidente Figueiredo, state of Amazonas, Brazil; and (D) MPEG 17837, Samuel Power Plant Hydroelectric, municipality of Porto Velho, Rondônia, Brazil. Scale = 7 mm.
FIGURE 13 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 13. Maximum parsimony consensus tree of Acesta taxa inferred from 66 most parsimonious trees. Branches corresponding to partitions reproduced in less than 50% trees are collapsed. The percentage of parsimonious trees in which the associated taxa clustered together is shown next to the branches. The root was placed on the branch leading to Lima lima (Linnaeus, 1758) and the Limaria Link, 1807, species.
FIGURE 16 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 16. Close-up internal view of the hinge of Acesta cryptadelphe sp. nov. from The Gully (offshore Nova Scotia), Bay d'Espoir (Newfoundland), and Beothuk Knoll (southwest Flemish Cap). (A) Paratype CMNML 097157.2, left valve; The Gully. (B) Paratype CMNML 092958, left valve; Bay d'Espoir. (C) Paratype CMNML 097160.1, left valve; Beothuk Knoll. (D) Paratype CMNML 097159.2, right valve; Beothuk Knoll. Scales = 1 cm.
FIGURE 14 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 14. External and internal views of the valves of Acesta cryptadelphe sp. nov. from The Gully, offshore Nova Scotia. (A) Holotype CMNML 097156, left valve. (B) Paratype CMNML 097157.1, left valve. Scales = 5 cm.
FIGURE 12 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 12. Molecular phylogenetic analysis of Acesta, Lima and Limaria species by Maximum Likelihood method based on partial COI gene sequences (589 bp). The tree is drawn to scale, with branch lengths measured in the number of substitutions per site.
FIGURE 11 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 11. Canonical variate analysis of the Procrustes coordinates for all Acesta groups (146 specimens) with at least three specimens, based on a PCA reduction to 10 axes. (A) axis 1 (eigenvalue = 3.096) vs. axis 2 (eigenvalue = 0.983). (B) axis 1 vs. axis 3 (eigenvalue = 0.347).
FIGURE 10 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 10. Thin-plate spline deformation grids for the extremities of each principal component for all 152 Acesta specimens. (A–B) axis 1. (C–D) axis 2. (E–F) axis 3. (exaggeration factor = 1.2)
FIGURE 15 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 15. External and internal views of the valves of Acesta cryptadelphe sp. nov. from Beothuk Knoll, southwest Flemish Cap. (A) Paratype CMNML 097159.1, left valve; scale = 5 cm. (B) CMNML 097162, left valve; scale = 0.2 cm.
FIGURE 8 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 8. Procrustes superposition of landmarks and corrected semilandmarks. (A) all 152 Acesta specimens, and (B) 105 specimens of Acesta excavata.
FIGURE 5 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 5. Inside view of a right valve of Acesta excavata, showing morphological features, landmarks 1 to 5 and 58 semilandmarks (6 to 63) positioned where the lines from the superimposed comb intersect the shell margin.
FIGURE 7 in Morphological and genetic variation in North Atlantic giant file clams, Acesta spp. (Bivalvia: Limidae), with description of a new cryptic species in the northwest Atlantic
FIGURE 7. Scatter plots comparing various shell measurements and ratio for the ten different groups of Acesta examined in this study. Regression lines in (E) are shown for A. excavata (black line), the Newfoundland group (blue line), A. rathbuni (purple line) and A. oophaga (light blue power-function curve); intersect is set at 0 for all regressions.
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International Brain Laboratory public data
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OpenNeuro
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