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1,104 results for “morphological variations”
Figure 17 in A preliminary report on the World species of Bemisia Quaintance and Baker and its congeners (Hemiptera: Aleyrodidae) with a comparative analysis of morphological variation and its role in the recognition of species Raymond Gill
Figure 17. Bemisia guieriae Bink-Moenen, Sudan: Kordofan, 18-iv-81, ex: Guiera senegalensis, J. Martin coll. (Reprinted by permission from Springer Science+Business Media B.V.).
Figure 18 in A preliminary report on the World species of Bemisia Quaintance and Baker and its congeners (Hemiptera: Aleyrodidae) with a comparative analysis of morphological variation and its role in the recognition of species Raymond Gill
Figure 18. Bemisia tuberculata Bondar, Specimen TB2 #3, Araras P.C. Brasil, 6/69 ex. Manihot ultissima, A.S. Costa, Det. L.M. Russell.
Figure 47 in A preliminary report on the World species of Bemisia Quaintance and Baker and its congeners (Hemiptera: Aleyrodidae) with a comparative analysis of morphological variation and its role in the recognition of species Raymond Gill
Figure 47. Bemisia pongamiae Takahashi, Taiwan, Taipei, 6-IX-1985, ex. Pongamia pinnata, C.C. Ko, coll.
Figure 12 in A preliminary report on the World species of Bemisia Quaintance and Baker and its congeners (Hemiptera: Aleyrodidae) with a comparative analysis of morphological variation and its role in the recognition of species Raymond Gill
Figure 12. Bemisia miniscula Danzig, Adzharia, Keda, Caucasus, USSR, 3-IX-60, ex: Cistus salvifolius, E. Danzig, coll. (Synonym of B. tabaci).
Supplementary material 8 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Table of coordinates used
Supplementary material 7 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Haplotype network of the COI data analyzed of D. pampeana
Supplementary material 2 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Scree plots obtained from the morphometric and meristic data analyzed
Supplementary material 5 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Tukey box plot of most distinctive meristic data observed in analyzed specimens of Diapoma pampeana
Figure 4 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Figure 4 Most discriminant axes obtained from the PCA analyses performed using morphometric and meristic data of studied specimens of Diapoma pampeana (in each plot, the loadings are scaled to 90% of the PC scores). Size-corrected measurements: A. PC1 vs. PC2 plot; B. PC3 vs. PC4 plot. Meristic data; C. PC1 vs. PC2 plot; D. PC3 vs. PC4 plot. Only these variables that most loaded the components are indicated as follows: E- depth at dorsal-fin origin; F- snout to dorsal-fin origin; G- snout to pelvic-fin origin; H- Snout to anal-fin origin; I- distance between dorsal- and adipose-fin origins; J- dorsal fin to caudal-fin base; K- anal-fin base length; L- caudal peduncle length; M- longitudinal scales; N- lateral-line scales; P- scales between lateral line-dorsal origin; Q- scales between lateral line-pelvic origin; R- circumpeduncular scales; S- predorsal scales; T- number of branched anal-fin rays; U- gill rakers on upper limb of branchial arch; V- gill rakers on lower limb of branchial arch; W- number of maxillary teeth; X- number of dentary teeth.
Figure 3 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Figure 3 Geographic distribution of Diapoma pampeana. A. View within South America; B. View within Brazil and Uruguay. All studied specimens from the Pando (Circle), Santa Lucía (triangle), Yi (diamond), and Upper Negro (star; holotype represented by not-filled pattern) are depicted. Other records presented by Ito et al. (2022) are also included.
Figure 1 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Figure 1 Coloration in life of D. pampeana (A, B) from the Pando stream, Canelones Uruguay. Photo by J. Pfleiderer.
Figure 6 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Figure 6 Bayesian topology of phylogenetic relationships among the analyzed Diapoma species (comparing specimens of D. pampeana from the Pando stream and Upper Negro basin) based on COI sequence data. Numbers at nodes correspond to posterior probabilities.
Supplementary material 6 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Uncorrected pairwise genetic distances using the COI data matrix
Supplementary material 3 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Total variance accounted for the PCA performed for the morphometric and meristic data
Supplementary material 1 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
All COI sequences analyzed in the present work
Figure 2 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Figure 2 Extern morphology of studied specimens of Diapoma pampeana. A. MLP 11443, male, 30.6 mm SL, Uruguay, Pando Stream; B. MLP 11445, female, 35.1 mm SL, Uruguay, Pando Stream; C. MHNM 1125, female, 31.3 mm SL, Uruguay, Canelón Grande Stream; D. MHNM 4018, male, 29.8 mm SL, Uruguay, marginal lagoon to Rio Yi; E. MHNM 4018, female, 29.3 mm SL, Uruguay, marginal lagoon to Rio Yi. Photographs of the specimens from the Upper Negro are available in Ito et al. (2022). Scale bar: 1 mm.
Figure 5 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Figure 5 Neighbor-Joining topology of analyzed Diapoma specimens based on Tamura-Nei model and COI sequence data. Bootstrap values (10000 replicates) are shown below the branches. SBL = 0.783.
Fig. 1. a in Color pattern variation in Cichla temensis (Perciformes: Cichlidae): Resolution based on morphological, molecular, and reproductive data
Fig. 1. a) Four defined color pattern grades in Cichla temensis used to group live specimens in the field. Specimens within each grade occur along a continuum of color and pattern variation. Grades 1 and 4 represent the extremes of variation. The more brightly colored Grade 4 (specimen TL = 548mm) variant is known as the three-barred peacock or tucunaré açu in Brazil. At the other extreme, Grade 1 (specimen TL = 541mm) is known as the speckled peacock or tucunaré paca and is dark and comparatively non-descript. Grade 2 (specimen TL = 613mm) and Grade 3 (specimen TL = 585mm) represent transitional degrees of variation between the extremes of paca and açu. All variant grades were collected in both Region 1 and Region 2 (Fig. 2); b) Cichla monoculus was collected in Region 1 (specimen TL = 382mm) and displays a pattern of bars 1, 2 and 3 similar to, but shorter than those of C. temensis without postorbital markings but with an abdominal bar; c) Cichla orinocensis was collected in Region 2 (specimen TL = 412mm) and is differentiated by three ocellar marks in place of vertical bars 1, 2 and 3. Postorbital markings are absent.
A supergene underlies linked variation in color and morphology in a Holarctic songbird
<p>The genetic architecture of a phenotype can have considerable effects on the evolution of a trait or species. Characterizing genetic architecture provides insight into the complexity of a given phenotype and, potentially, the role of the phenotype in evolutionary processes like speciation. We use genome sequences to investigate the genetic basis of phenotypic variation in redpoll finches (<i>Acanthis</i> spp.). We demonstrate that variation in redpoll phenotype is broadly controlled by a ~55-Mb chromosomal inversion. Within this inversion, we find multiple candidate genes related to melanogenesis, carotenoid coloration, and bill shape, suggesting the inversion acts as a supergene controlling multiple linked traits. A latitudinal gradient in ecotype distribution suggests supergene driven variation in color and bill morphology are likely under environmental selection, maintaining supergene haplotypes as a balanced polymorphism. Our results provide a mechanism for the maintenance of ecotype variation in redpolls despite a genome largely homogenized by gene flow.</p>
Fig. 3 in First Specimen-based Record of Ammolabrus dicrus (Perciformes: Labridae) from Japanese Waters, with Notes on Morphological Ontogenetic Changes and Geographic Variation
Fig. 3. Specimen-based distributional records of Ammolabrus dicrus. Open and closed symbols indicate previously published and new records, respectively.
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Allen Brain Atlas
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