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1,104 results for “morphological variation”
FIGURE 1 in Morphological variation in a conservative structure: the scapulocoracoids in Sympterygia acuta Garman, 1837 and Sympterygia bonapartii Müller & Henle, 1841 (Chondrichthyes: Rajidae)
FIGURE 1. Lateral view (left) of a skate scapulocoracoid showing measurements proposed by McEachran & Compagno (1979). Abbreviations: g length = greatest length; g height = greatest height; prmsc = premesocondyle; pomsc = postmesocondyle; RC height = height of rear corner; prc = precondyle; msc = mesocondyle; mtc = metacondyle; ab = anterior bridge; pdfe = postdorsal fenestrae; pvfe = postventral fenestrae.
Supplementary material 1 from: Gebauer R, Řepka R, Šmudla R, Mamoňová M, Ďurkovič J (2016) Anatomical and morphological spine variation in Gymnocalycium kieslingii subsp. castaneum (Cactaceae). PhytoKeys 69: 1-15. https://doi.org/10.3897/phytokeys.69.8847
Table S1. Coefficient of variation (CV) of spine and fiber traits within areoles. : Explanation note: The number of spines within an areole is given in brackets (n). Depicted are CV values above 15%. See Table 1 for explanation of spine and fiber traits.
FIGURE 7 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 7. Scatterplots of the first versus the second principal component scores of a Principal Component Analysis of the morphometric variables measured from specimens of the Long-tailed Reed Finch Donacospiza albifrons. Distinct symbols indicate distinct population groups as delimited in the main text. Component loadings are indicated between parentheses along the axis.
FIGURE 3 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 3. Color variation in the Long-tailed Reed Finch Donacospiza albifrons due to age and feather abrasion. From left to right: AMNH 321449 (new definitive basic plumage); AMNH 322059 (slightly abraded definitive basic plumage); AMNH 388281 (very abraded definitive basic plumage); AMNH 519693 (new first basic plumage); and AMNH 388282 (abraded juvenal plumage, molting to the first basic plumage). All specimens were collected in the southern range of the species.
FIGURE 2 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 2. Typical habitat of the Long-tailed Reed Finch Donacospiza albifrons at the northern portion of its range (Southeastern Brazil Highlands), in the Parque Estadual do Rola Moça, municipality of Brumadinho, Minas Gerais, Brazil (20°03'33''S, 44°00'26''W, 1400 m asl). The species inhabits the drier and higher areas of the park.
FIGURE 1 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 1. Map showing the collection sites of the specimens of the Long-tailed Reed Finch Donacospiza albifrons examined in this study. The dashed line indicates the range of the species according to BirdLife International & Handbook of the Birds of the World (2016).
FIGURE 6 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 6. Box plot comparisons between measurements of the five groups of the Long-tailed Reed Finch Donacopspiza albifrons delimited here (see text). Boxes show the median line and the 25th and 75th percentiles; bars show the non-outlier range of variation. Sample sizes are: RP—Río de la Plata (25♂, 18♀); SB—Southern Brazil (9♂, 8♀); SU—Southeastern Brazil Uplands (8♂, 4♀); SH—Southeastern Brazil Highlands (10♂, 8♀); and LM—Llanos de Moxos (3♂, 1♀).
FIGURE 4 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 4. Geographic variation in coloration of definitive basic plumaged specimens of the Long-tailed Reed Finch Donacospiza albifrons. All specimens, from left to right, were collected in the following Brazilian states: DZUFMG 6286— Minas Gerais; MZUSP 78041—São Paulo; MZUSP 28940—São Paulo; MZUSP 2640—São Paulo; MZUSP 19941—São Paulo; MZUSP 2625—São Paulo; MZUP 6915—Paraná; and MZUSP 38792—Rio Grande do Sul. Note the clinal variation in plumage coloration, with northern birds paler and almost unstreaked on the upperparts (left), and with southern birds markedly buff and streaked on the upperparts (right).
FIGURE 5 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 5. Color variation in the definitive basic plumage of the Long-tailed Reed Finch Donacospiza albifrons. From left to right: LSUMZ 60674—Buenos Aires, Argentina (new plumage); LSUMZ 124923—El Beni, Bolivia (new plumage); LSUMZ 124921—El Beni, Bolivia (abraded plumage); and LSUMZ 63122—São Paulo, Brazil (abraded plumage).
FIGURE 8 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 8. Correlation between body size (measured as the first Principal Component scores) and average mean annual temperature of the collection site of specimens of the Long-tailed Reed Finch Donacospiza albifrons examined in this study. Component loadings for males are as follow: wing -0.826, tail -0.36, culmen -0.764, and tarsus -0.771, with a contribution ratio of 49.8%. Component loadings for females are as follow: wing -0.865, tail -0.667, culmen -0.804, and tarsus -0.791, with a contribution ratio of 61.6%.
FIGURES 9–12 in A new species of Brasineura Silva-Neto & García Aldrete (Psocodea, 'Psocoptera', Ptiloneuridae), with comments on morphological variation in B. troglophilica and a revised generic diagnosis
FIGURES 9–12. Variation of the fore wing M vein in B. troglophilica. 9–11. Males collected in Serra Norte, Marabá. 12. Paratype male of B. troglophilica. Scales in mm.
FIGURES 1–7 in A new species of Brasineura Silva-Neto & García Aldrete (Psocodea, 'Psocoptera', Ptiloneuridae), with comments on morphological variation in B. troglophilica and a revised generic diagnosis
FIGURES 1–7. Brasineura serranortensis sp.n. (Holotype male). 1. Front view of head. 2. Fore wing. 3. Hind wing. 4. Lacinial tip. 5. Clunium, right paraproct and epiproct. 6. Hypandrium. 7. Phallosome. Scales in mm.
FIGURE 2 in New specimens of Helicops boitata (Serpentes: Dipsadidae: Hydropsini), with data on morphological variation and behavior
FIGURE 2. Records of five new specimens of Helicops boitata (black circles), nearly 10 km straight-line distant from the type locality (white triangle), in the influence area of the Bento Gomes River, municipality of Poconé, state of Mato Grosso, Brazil. Cartographic raster modified from MapBiomas 7 Collection.
FIGURE 1 in New specimens of Helicops boitata (Serpentes: Dipsadidae: Hydropsini), with data on morphological variation and behavior
FIGURE 1. Schematic representation of the terrarium in which three alive individuals of Helicops boitata were maintained for observations for three days.
FIGURE 4 in New specimens of Helicops boitata (Serpentes: Dipsadidae: Hydropsini), with data on morphological variation and behavior
FIGURE 4. Behavioral records of individuals of Helicops boitata maintained in captivity during a period of three days. (A) An individual almost completely buried in the sand of the terrarium, keeping only the head above the surface; (B) two individuals exhibiting the upright posture of the snout, leaning the trunk to a nearly 90° position above the water surface; (C) an individual swimming in open water; (D) detail of the emerging head of an individual in the upright posture of the snout.
FIGURE 1 in Morphological variation of the rare psammophilous species Apostolepis gaboi (Serpentes, Dipsadidae, Elapomorphini)
FIGURE 1. Head views (left, right, dorsal and ventral, respectively) (A), dorsal (B) and ventral body views (C), tail views (dorsal and ventral, respectively), and dorsal midbody view (E) of the holotype of Apostolepis gaboi (MZUSP 10290) from Queimadas, municipality of Pilão Arcado, state of Bahia, Brazil.
FIGURE 4 in Morphological variation of the rare psammophilous species Apostolepis gaboi (Serpentes, Dipsadidae, Elapomorphini)
FIGURE 4. Sulcate (left), asulcate (center), and lateral (right) views of the fully everted and maximally expanded hemipenis of Apostolepis gaboi (MZUFBA 1683).
FIGURE 3 in Morphological variation of the rare psammophilous species Apostolepis gaboi (Serpentes, Dipsadidae, Elapomorphini)
FIGURE 3. Color pattern variation of the preserved specimens of Apostolepis gaboi. Dorsal (A) and lateral (B) views of the head, lateral (C) and dorsal (D) views of the midbody, and ventral view of the tail (E).
FIGURE 6 in Morphological variation of the rare psammophilous species Apostolepis gaboi (Serpentes, Dipsadidae, Elapomorphini)
FIGURE 6. Sulcate (left), asulcate (center), and lateral (right) views of the fully everted and maximally expanded hemipenis of Apostolepis ammodites (MZUSP 12069-A), A. arenaria (MZUSP 15573-B), A. assimilis (IB 52754-C), A. cearensis (MZUSP 19549-D), and A. gaboi (MZUFBA 1683-E).
FIGURE 5 in Morphological variation of the rare psammophilous species Apostolepis gaboi (Serpentes, Dipsadidae, Elapomorphini)
FIGURE 5. Landscape view from the Quaternary sandy dunes in the São Francisco River, state of Bahia, northeastern Brazil (A) and the map showing the distribution of Apostolepis gaboi in the left side of the São Francisco River (B). Photo A by Miguel Rodrigues.
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International Brain Laboratory public data
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OpenNeuro
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