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83 results for “Bathyraja”
FIGURE 1 in A new temperate deepwater skate of the genus Bathyraja (Rajoidei: Arhynchobatidae) from the South-West Pacific
FIGURE 1. Bathyraja pacifica sp. nov., adult male holotype (NMNZ P39707, 1224 mm TL, fresh coloration): A, dorsal surface; B, ventral surface.
FIGURE 52 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 52. Three equally parsimonious trees of the seven study species, plus a rooted outgroup species, Beringraja inornata. A. Maximum parsimony tree displaying a branch that is comprised of Bathyraja interrupta and B. kincaidii; B. Maximum parsimony tree with B. kincaidii and B. interrupta on separate branches; C. Maximum parsimony tree displaying all species as being on separate branches, except B. abyssicola and B. aleutica. The numbers on the branches indicate the number of changes between character states.
FIGURE 51 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 51. PCA plots of measurements relative to total length and their relationships to each other. Points indicate the average principal component (PC) scores with standard error bars. Lines indicate the eigenvector scores for each measurement. A. Disc length (DL), disc width (DW), and snout to maximum disc width (SDW); B. snout to maximum disc width, head length (HDL), preorbital length (POB), and preoral length (POR); C. first dorsal fin total length (DIT), first dorsal fin height (D1H), first dorsal fin base length (D1B), second dorsal fin height (D2H), second dorsal fin base length (D2B), caudal fin height (CDH), and caudal fin base length (CDB); D. pelvic fin anterior lobe length (PPL), pelvic fin anterior lobe inner length (PAL), and pelvic fin posterior lobe length (IAL); E. total length (TL), disc length, disc width, interdorsal space (IDS), and tail length (TAL); F. spiracle length (SPL), interspiracular space (ISP), and interorbital width (IOW). Species shown by color: Bathyraja abyssicola (red triangle), B. aleutica (green triangle), B. interrupta (maroon hexagon), B. kincaidii (blue circle), B. microtrachys (pink star), B. spinosissima (yellow diamond), and B. trachura (black square).
FIGURE 50 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 50. Mean thorn counts by species by species, bars indicate the standard error from the mean. Letters show whether means are significantly different across species; A. interdorsal thorns; B. middorsal thorns; C. nuchal thorns; D. scapular thornsright side; E. scapular thorns- left side; F. tail thorns.
FIGURE 48 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 48. Mean fin measurements by species in millimeters, measurements are taken as a percentage of total length (% TL). Bars indicate the standard error from the mean. Letters show whether means are significantly different across species; A. first dorsal fin base length; B. first dorsal fin height; C. second dorsal fin base length; D. second dorsal fin height; E. caudal fin base length; F. caudal fin height.
FIGURE 47 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 47. Mean body measurements by species in millimeters, measurements are taken as a percentage of total length (% TL). Bars indicate the standard error from the mean. Letters show whether means are significantly different across species; A. snout to max disc width; B. head length; C. preorbital length; D. eye length; E. spiracle length; F. interspiracular length.
FIGURE 49 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 49. Mean pelvic fin and tail measurements by species in millimeters, measurements are taken as a percentage of total length (% TL). Bars indicate the standard error from the mean. Letters show whether means are significantly different across species; A. pelvic fin length; B. pelvic fin posterior lobe length; C. pelvic fin anterior lobe length; D. pelvic fin anterior lobe inner length; E. precaudal length; F. tail length.
FIGURE 46 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 46. Mean body measurements by species in millimeters, measurements are taken as a percentage of total length (% TL). Bars indicate the standard error from the mean. Letters show whether means are significantly different across species; A. interdorsal space; B. preoral length; C. mouth width; D. prenarial length; E. internarial width; F. nasal curtain width.
FIGURE 44 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 44. Non-metric multi-dimensional scaling (nMDS) plot comparing the morphological traits of A. adult males; B. juvenile males. Species shown by color: Bathyraja microtrachys (pink star) and B. trachura (black square).
FIGURE 43 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 43. Non-metric multi-dimensional scaling (nMDS) plot comparing the morphological traits of A. adult females; B. adult males; C. juvenile females; D. juvenile males. Species shown by color: Bathyraja interrupta (maroon hexagon) and B. kincaidii (blue circle).
FIGURE 45 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 45. Mean total length and disc measurements by species in millimeters. Other than total length, all other measurements are taken as a percentage of total length (% TL). Bars indicate the standard error from the mean. Letters show whether means are significantly different across species; A. total length; B. disc length; C. disc width; D. anterior disc length; E. posterior disc length; F. disc base length.
FIGURE 42 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 42. Non-metric multi-dimensional scaling (nMDS) plot comparing the morphological traits of A. adult females; B. adult males; C. juvenile females; D. juvenile males. Species shown by color: Bathyraja abyssicola (red triangle), B. aleutica (green triangle), B. interrupta (maroon hexagon), B. kincaidii (blue circle), B. microtrachys (pink star), B. spinosissima (yellow diamond), and B. trachura (black square).
FIGURE 41 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 41. Non-metric multi-dimensional scaling (nMDS) plot comparing the morphological traits of A. all skate specimens included in this study; B. all adults; C. all females; D. all males. Species shown by color: Bathyraja abyssicola (red triangle), B. aleutica (green triangle), B. interrupta (maroon hexagon), B. kincaidii (blue circle), B. microtrachys (pink star), B. spinosissima (yellow diamond), and B. trachura (black square).
FIGURE 40. Ventral view X in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 40. Ventral view X-radiograph of Bathyraja trachura, CAS 243650, mature male. X-radiograph by Jon Fong (CAS).
FIGURE 39 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 39. Scanning electron microscope images of the dermal denticles of Bathyraja trachura, Btra 030613-2, 899 mm TL, mature male, from A. the first dorsal fin and B. the head region, behind the eyes. Photos by Justin Cordova (MLML).
FIGURE 38 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 38. Components of the clasper for Bathyraja trachura, Btra 030613-2, 899 mm TL, mature male. CL- cleft, PJ- projection, PR- pseudorhipidion, PS- pseudosiphon. Photo by J.D.S. Knuckey.
FIGURE 37 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 37. Bathyraja trachura, holotype, 457 mm TL, female, dorsal view, preserved. Photo by D.A. Ebert. Scale bar = 70 mm.
FIGURE 36. Bathyraja trachura, PSRC Btra 062212-2, 805 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 36. Bathyraja trachura, PSRC Btra 062212-2, 805 mm TL, mature male, ventral view, fresh. Photo by J.D.S. Knuckey. Scale bar = 100 mm.
FIGURE 34 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 34. Scanning electron microscope images of the dermal denticles of Bathyraja spinosissima from A. the first dorsal fin and B. the head region, behind the eyes. Photos by Justin Cordova (MLML).
FIGURE 35. Bathyraja trachura, PSRC Btra 062212-2, 805 in A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama)
FIGURE 35. Bathyraja trachura, PSRC Btra 062212-2, 805 mm TL, mature male, dorsal view, fresh. Photo by J.D.S. Knuckey. Scale bar = 100 mm.
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