anna's sixgill sawshark

She was classically trained at Tulane University in New Orleans where she gained experience … Knapp and P.C. The photograph was taken and kindly provided by Kevin Webb. [27] is erroneous. Fast and free shipping free returns cash on delivery available on eligible purchase. a,b large lateral rostral tooth (image reversed) in a total and b close-up views; c small interstitial lateral rostral tooth in total view (image reversed); d–f rostral dermal denticles in d apical and e,f apico-lateral views. Data curation, Like in P. kajae, the barbels are situated about half way from rostral tip to mouth, with prebarbel length about equidistant from barbel origin to symphysis of upper jaw. School of Natural and Environmental Sciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom, Affiliation Yes 41 likes. Pliotrema annae appears to be rare also off Zanzibar and P. kajae also appears to be rare within its distribution area. DMM I-E/4817: juvenile male, 351 mm TL, RV ‘Ernst Haeckel’ Cruise 51, Haul 567/80, off Mozambique, 23°56’S 35°48’E, 21 September 1980. The ventral spines are more or less pronounced and decrease in size and partially get lost with age, in some species they are colored black. Large interstitial rostral teeth similar but with somewhat less pronounced serration in specimens of 704 mm TL (heavily dissected syntype BMNH 1899.2.10.4) or larger. The basal face of the root is flat, partly showing some outer foramina. It remains unclear if Pliotrema indeed occurs off Kenya and/or Somalia at all, as described for P. warreni in Gubanov [28]. Syntype (BMNH 1862.11.1.37): juvenile male, 734 mm TL, off Japan (photographs only). Proportional values are expressed as percentages of total length (TL) 70% ethanol preserved except for minimum, maximum, and mean of TL in mm. South African Institute for Aquatic Biodiversity, Grahamstown, South Africa, Roles Morphometric measurements were taken between perpendicular lines, where relevant, by vernier caliper to one tenth of a millimeter and follow Compagno [18], Yearsley et al. DMM I-E/4902: adult female, 700 mm TL, off Mozambique, February to March 1983. ZMH 8503: juvenile male, 506 mm TL, RV ‘Southern Surveyor’, Station SS 5/94/95 (Bass Strait: 38°42.4’S 148°16.8’E), collected on 26 August 1994 with bottom trawl, 86–87 m depth. Further, the anterior-most basiventral cartilages are laterally expanded and have curved, dorsally reflected margins [4,5]. Snout short, head length 34.2–34.5% TL, preorbital length 21.7–22.0% TL, preoral length 24.6–25.1% TL, prebarbel length 12.6–12.7% TL, barbel origin to symphysis upper jaw 12.1–12.3% TL; rostrum only slightly constricted between barbel origin and nostrils; 16–17 large lateral rostral teeth; 35–37 upper jaw tooth rows, jaw teeth without basal folds; uniform medium to dark brown dorsally without longitudinal stripes, white ventrally but with few indistinct dark blotches on belly, posterior fin margins conspicuously white-edged ………………………………………………………‥… Pliotrema annae sp. Cranium: five anterior-most basiventral cartilages laterally expanded, with curved, dorsally reflected margins. Proposed English vernacular name: Kaja’s sixgill sawshark. Pliotrema kajae also clearly differs from the second new species in a generally longer snout, more upper and lower jaw tooth rows, higher total large lateral rostral tooth and ventral rostral spine counts, and a pale to light brown dorsal coloration with two indistinct yellowish stripes, uniform white ventral coloration, and posterior fin margins with narrow white edges (vs. uniform medium to dark brown dorsally without longitudinal stripes, white ventrally but with few indistinct dark blotches on belly, posterior fin margins conspicuously white-edged). Color in preservative (other material examined): coloration similar to fresh coloration but yellowish longitudinal dorsal stripe not detectable in all specimens, particularly after long-time storage in ethanol; ventral coloration uniform yellowish instead of white as usual, ventrolateral keels also yellowish; dark edging of rostrum and lateral rostral teeth still pronounced in most specimens but hardly detectable in the intact syntype which is more than 100 years old; longitudinal dorsal rostral stripes still conspicuous in all specimens including the intact syntype. https://doi.org/10.1371/journal.pone.0228791.g008. Gill slits small, upright, weakly pleated, lateral on head, close to ventral surface, extending slightly onto ventral surface, subequal in length, sixth slit arches around pectoral-fin origin. Shop unique Chibi face masks designed and sold by independent artists. A pronounced and broad, irregularly shaped apron overlaps the junction of crown and root, building a notch at the junction with both mesial and distal crown base parts. Methodology, The basal face has a large and deep roundish foramen in the center. Proposed English vernacular name: Anna’s sixgill sawshark. The ZooBank LSIDs (Life Science Identifiers) can be resolved and the associated information viewed through any standard web browser by appending the LSID to the prefix “http://zoobank.org/”. Known only from off Zanzibar in depths of 20 to 35 m (Fig 14). 3a. View the profiles of people named Anna Sawicka. Clasper shaft flattened rod-shaped. 3069, trawl duration 30 min, 137 m depth (photographs only). Writing – review & editing, Affiliation [3] pointed out that, despite sharing many characteristics, the claspers of pristiophoriforms and squatiniforms differ greatly. 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