nov. and P. annae sp. Where relevant, ratios are based on horizontal measurements unless otherwise stated. Syntype (BMNH 1867.2.20.1), female, ~1000 mm TL, off Japan (photographs only). There are several morphometric differences between the embryos and the larger type specimens of Pliotrema kajae sp. Monospondylous centra 53–56; precaudal diplospondylous centra 49–51; total vertebral centra 154–158. Build your family tree online ; Share photos and videos Validation, Many thanks also to Vily from the village of Andavadoaka for providing the two rostra contributed by RHL and to Michel Goffstron for collecting those rostra. nov. so far is only known from shallow waters (20–35 m). The individual rostral teeth are fixed to the dermis and not embedded in sockets. No, Is the Subject Area "Jaw" applicable to this article? Yes Where relevant, ratios are based on horizontal measurements unless otherwise stated. Annas Pepparkakor has been baked since 1929 when the sisters Anna and Emma Karlsson opened their bakery in central Stockholm. a left clasper in dorsal view, b right and left claspers in ventral view. Further, the anterior-most basiventral cartilages are laterally expanded and have curved, dorsally reflected margins [4,5]. The description is based on the intact syntype BMNH 1905.6.8.9, as well as the four specimens DMM I-E/4946, SAIAB 186452, SAIAB 189132, and SAIAB 208021. https://doi.org/10.1371/journal.pone.0228791.g003. For more information about PLOS Subject Areas, click Additionally, Pliotrema annae differs from both congeners in the short snout (pre-D1-length 43.3–43,7% TL in P. annae vs. 47.2–50.6% TL in P. kajae vs. 45.4–49.0% TL in P. warreni, head length 34.2–34.5% TL vs. 38.3–40.4% TL vs. 35.5–40.1% TL, prebranchial length 29.6–30.5% TL vs. 34.2–36.6% TL vs. 32.1–35.8% TL, prespiracular length 24.7–25.6% TL vs. 29.0–31.9% TL vs. 27.2–30.9% TL, preorbital length 21.7–22.0% TL vs. 25.7–27.3% TL vs. 24.1–26.9% TL, prepectoral length 33.5–33.6% TL vs. 38.2–40.5% TL vs. 35.4–39.1% TL, prepelvic length 54.2–55.3% TL vs. 56.0–59.8% TL vs. 56.2–58.1% TL, prenarial length 20.5–21.1% TL vs. 24.1–26.3% TL vs. 22.6–25.5% TL, preoral length 24.6–25.1% TL vs. 28.6–31.3% TL vs. 26.7–30.2% TL), smaller eyes (eye length 2.7–2.8% TL vs. 2.8–5.2% TL vs. 2.9–4.0% TL), slightly larger pectoral fins (anterior margin length 12.7–13.4% TL vs. 10.3–12.2% TL vs. 10.7–12.2% TL), a larger first dorsal fin (total length 10.5–10.7% TL vs. 7.2–9.8% TL vs. 9.0–10.3% TL, anterior margin length 11.2–11.5% TL vs. 9.0–11.4% TL vs. 10.1–10.7% TL, base length 7.4–7.9% TL vs. 4.9–6.9% TL vs. 6.0–7.1% TL), a larger second dorsal fin (total length 8.9–9.3% TL vs. 7.6–8.6% TL vs. 5.4–8.8% TL, base length 6.3–6.4% TL vs. 5.1–6.3% TL vs. 5.4–6.0% TL, vertical height 6.8–6.9% TL vs. 4.5–6.2% TL vs. 5.2–6.4% TL), a larger pelvic fin (anterior margin length 7.0–7.1% TL vs. 5.3–6.7% TL, height 5.4–5.6% TL vs. 4.1–4.8% TL vs. 3.9–5.3% TL), smaller anterior nasal flaps (length 0.5–0.6% TL vs. 0.7–1.6% TL vs. 0.7–0.9% TL), shorter barbels (length 5.6% TL vs. 6.6–18.1% TL vs. 5.6–9.6% TL), a shorter interspiracular space (3.9% TL vs. 4.1–5.7% TL vs. 4.0–4.5% TL), a narrower rostrum (width at anterior nostrils 5.1% TL vs. 5.3–7.5% TL vs. 5.3–6.7% TL, width at origin of barbels 3.3–3.4% TL vs. 3.6–5.1% TL vs. 3.7–5.1% TL), as well as fewer total large lateral rostral teeth (16–17 vs. 21–31 vs. 21–34), ventral rostral spines anterior to nostrils (15 vs. 19–24 vs. 16–27), and tooth rows in upper (35–37 vs. 38–43 vs. 37–44) and lower (32–34 vs. 35–37 vs. 33–41) jaws. Se Anna Schellings profil på LinkedIn – verdens største faglige netværk. Crown of ventral spines elongated cone-shaped with a pronounced transversal basal ridge, root with roundish and pedestal-like base. Paratype (SAM 33477/MB-F033477): subadult male, 440 mm TL, same data as holotype (photographs only). Lateral trunk dermal denticles densely set and overlapping, with flat, tricuspidate crowns (Fig 21). Proposed English vernacular name: Warren’s sixgill sawshark. nov., holotype, MNHN 1987–1266, juvenile female, 560 mm TL (image merged from two radiographs), b P. annae sp. The electronic edition of this work was published in a journal with an ISSN, and has been archived and is available from the following digital repositories: PubMed Central, LOCKSS. a,b,c paratype SAIAB 84096, adult male, 940 mm TL, in a lateral, b dorsal, and c ventral views; d paratype SAIAB 84039, gravid female, 1143 mm TL, in lateral view. Pliotrema kajae differs from P. annae also in a shorter pectoral–pelvic space (13.5–18.5% TL vs. 19.0–19.9% TL), caudal peduncle height 2.8–4.0 vs. 4.5–4.9 times in dorsal–caudal space, preorbital length 2.7–3.6 vs. 2.1 times first dorsal-fin length, preoral length 2.0–2.7 vs. 1.5–1.7 times interdorsal space, a broader mouth (width 4.4–5.4% TL vs. 4.1–4.3% TL), and more spiracle folds (12–15 vs. 10–11). First dorsal fin broad, semifalcate, anterior margin slightly convex; apex narrowly rounded; posterior margin slanting posteroventrally, slightly convex distally, strongly concave in basal three quarters; inner margin straight, free rear tip narrowly pointed; origin about opposite pectoral-fin free rear tips; insertion and free rear tip clearly anterior to level pelvic-fin origins (Fig 10a). Ventral origin of caudal fin situated anteriorly due to low anterior fin ridge (Fig 22b). Body firm and slender, depressed forward of gills, abdomen subcircular in cross-section, tail subtriangular in cross-section, deepest at abdomen; not tapering gradually and evenly beyond pectoral fins; snout flattened, greatly extended, saw-like; abdomen elongate, horizontal head length 0.6 (0.6–0.7) times snout–anterior vent length, pectoral–pelvic space 16.1 (13.5–18.5)% TL; pelvic–caudal space 2.7 (2.5–3.0) times pelvic-fin length; tail flattened ventrally, elongate, snout–anterior vent length 1.5 (1.5–1.6) times anterior vent–caudal tip length; caudal peduncle short, dorsal–caudal space 7.7 (6.7–9.1)% TL, caudal peduncle height 3.5 (2.8–4.0) times in dorsal–caudal space and width 1.0 (0.8–1.6) times in height; ventrolateral keels well developed, extending from slightly behind level of free rear tip of pelvic fins (from about level to slightly behind level) to beyond origin of ventral lobe of caudal fin, converging strongly near their posterior extremity; no precaudal pit; no median predorsal, postdorsal or preventral caudal grooves (Figs 1 and 2). LACM 42620–20: adult male, 870 mm TL, east of Sydney (33°46’S 151°49’E), collected by C.C Swift and pty on 09 September 1981 with 27 m headrope otter trawl, 421–507 m depth. The surface of the denticles is only weakly structured by reticulations close to base. 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. https://doi.org/10.1371/journal.pone.0228791.g020. https://doi.org/10.1371/journal.pone.0228791.g022. A large six-gilled sawshark with the following characters: barbel origin to anterior nostrils 1.4–2.3 times anterior nostrils to symphysis upper jaw; prenarial length 1.5–1.7 times prebarbel length; preoral length 2.0–2.7 times interdorsal space; pectoral-fin anterior margin 1.2–1.6 times dorsal–caudal space; mouth width 2.8–6.6 times spiracle length. The mesial/distal latero-lingual crown faces curve strongly towards the apex of the crown, forming a sharp notch with the uvula. Anna har 2 job på sin profil. Lateral trunk dermal denticles tricuspidate, rather flat and imbricated. Yes The water depth descends rapidly from ~20 m to >200 m. Accordingly, deep-water sharks such as sixgill sharks and spurdogs are caught, alongside oceanic species such as mako and silky sharks and coastal species such as tiger and bull sharks, smoothhounds, and reef sharks all in the same fishery. https://doi.org/10.1371/journal.pone.0228791.t004. Clasper shaft flattened rod-shaped. Scale bars: 5 cm. Lateral trunk dermal denticles tricuspidate, rather flat and imbricated. Holotype MNHN 1987–1266, juvenile female, 560 mm TL, off Tulear (Madagascar), 23°19’58.8” S 43°31’1.2” E, 320 m depth, Dec 1985. Den sixgill saghaier ( Pliotrema warreni) er kjent for sine seks par av gjeller som befinner seg på sidene nær hodet. The mesial/distal latero-lingual crown faces curve strongly towards the apex of the crown, forming a sharp notch with the uvula. Color in preservative (type specimens, Fig 16): coloration similar to fresh coloration, ventral ground coloration yellowish instead of white as usual but dark blotches still present, ventrolateral keels also yellowish; dark edging of rostrum and lateral rostral teeth, as well as longitudinal dorsal rostral stripes still conspicuous. No sexual dimorphism detectable in the morphology of the trunk dermal denticles. DMM I-E/4506: adult female, 640 mm TL, RV ‘Ernst Haeckel’ Cruise 51, Haul 89/80, off Mozambique, 23°56’S 35°48’E, 15 June 1980 (photographs only). Pliotrema kajae is further distinguished from P. warreni by barbels that are situated about half way from rostral tip to mouth, with prebarbel length about equidistant from barbel origin to symphysis of upper jaw (vs. barbels about two thirds way from rostral tip to mouth, with prebarbel length about twice distance from barbel origin to symphysis of upper jaw) and the presence of two indistinct, yellowish longitudinal stripes on the dorsal surface (vs. one pronounced yellowish longitudinal stripe). Nevertheless, P. warreni can be found in waters shallower and deeper than this based on specimens ERB 1105 (caught in 10–25 m depth) and one specimen from 915 m depth in the iSAM collection (SAM 33308, catch location 35.035°S 24.0217°E). Mouth moderately large, strongly inferior, broadly arched, symphysis about level with posterior edge of eye, width 4.1 (4.3)% TL and 1.6 (1.6) times in head width; upper labial furrows absent, lower furrows very short, 0.3 (0.3)% TL; corner of mouth partly concealed by lateral muscles of jaw (Fig 19). Large interstitial rostral teeth similar but with somewhat less pronounced serration. urn:lsid:zoobank.org:act:DE91D0E9-3AED-41FC-8CB6-09A53E50EEBD. DMM I-E/4872: adult male, 555 mm TL, off Mozambique, February to March 1983. set depth of the gear; water depth unknown but probably only 2–5 m deeper than this), haul time ~8 am, time of catch unknown but likely during hours of darkness, date 07 March 2019. Interstitial rostral teeth (Fig 4c–4h) with blade-shaped crown and without serration (large interstitial rostral teeth serrated and similar to large lateral rostral teeth in all specimens larger than the holotype). The basal face has a large and deep roundish foramen in the center. Basal ornamentation, striae or reticulations absent, sharp folds present in upper but absent in lower jaw teeth. The surface of the rostral dermal denticles is only weakly structured by reticulations very close to base. The inner face of the root shows up to six well-developed foramina along the crown-root junction at each side of the uvula. First dorsal fin originates about opposite pectoral-fin free rear tips. Data Availability: All relevant data are within the manuscript. Syntype (BMNH 1862.11.1.37): juvenile male, 734 mm TL, off Japan (photographs only). Distribution: Western Indian Ocean: Mozambique to South Africa. Crown base with numerous short longitudinal ridges forming a pronounced transversal crest. Proportional values are expressed as percentages of total length (TL) 70% ethanol preserved except for minimum, maximum, and mean of TL in mm. Join Facebook to connect with Anna Shawl and others you may know. Crown base with numerous short longitudinal ridges forming a pronounced transversal crest. Anterior nasal flaps well developed, leaf-like, extended ventrally beyond nostrils; incurrent and excurrent apertures surrounded by pronounced marginal lobes; no nasoral or circumnarial grooves; no dermal lobes (Fig 5). here. The surface of the rostral dermal denticles is only weakly structured by reticulations very close to base (Fig 9a–9c). Caudal fin short, dorsal margin slightly convex, length 18.0–19.1% TL, 1.0–1.2 times in pelvic–caudal space and 3.7–5.4 times terminal caudal margin; lower post-ventral lobe absent, upper post-ventral margin slightly convex; terminal lobe well developed, caudal terminal margin slightly concave, apices angular (Fig 26). The sixgill sharks are a genus, Hexanchus, of deepwater sharks in the family Hexanchidae. Assuming that this new species does not occur off the southern African continent (South Africa, Mozambique), no records of Pliotrema kajae sp. Writing – review & editing. The surface of the rostral dermal denticles is only weakly structured by reticulations very close to base. The holotype and paratype are deposited in … A revised diagnosis of Pliotrema and a key to the species are provided. The teeth on the lateral edges of the snout are alternately large and small in juveniles but the number of small teeth in the interspaces between large teeth increases ontogenetically. The outer surface of the root shows up to four large basal foramina, which are mostly oval-shaped. The images were kindly provided by Frederik Mollen, Elasmobranch Research Belgium, from Herman & Ladeuze [29]. However, the maximum depth of 500 m is apparently based on erroneous data for the holotype of Pliotrema kajae sp. a,b paratype SAIAB 84096, adult male, 970 mm TL fresh, c,d paratype SAIAB 84039, gravid female, 1170 mm TL fresh. The lateral cusps are rather weakly pronounced but situated quite far anteriorly so that the median cusp is not much longer than the lateral cusps. possibly occurs down to 1080 m depth [28] but it is impossible to assign this maximum depth to a certain species nor any verified specimen of Pliotrema. Data obtained from one electronic pop-up tag (Mini PAT), provided information about depth and temperature preferences over 75 days. Color medium to dark brown dorsally with a pronounced yellowish longitudinal stripe; uniform white ventrally; dorsal rostrum surface with two distinct longitudinal dark stripes, lateral rostral teeth dark-edged. Se hela profilen på LinkedIn, se Annas kontakter och hitta jobb på liknande företag. https://doi.org/10.1371/journal.pone.0228791.g023, https://doi.org/10.1371/journal.pone.0228791.g024. Pectoral fins large, anterior margin weakly convex, 10.7–12.2% TL and 1.3–1.6 times inner margin; apex narrowly rounded; posterior margin weakly concave, directed across horizontal axis at about origin of first dorsal fin; inner margin convex and strongly notched basally; free rear tip angular (Fig 26). Se hele profilen på LinkedIn, og få indblik i Annas netværk og job hos tilsvarende virksomheder. The basal face shows a deep v-shaped median groove that is antero-posteriorly directed and has an oval-shaped cavity in the center. Yes Large rostral teeth (Fig 28a–28c) with elongated crown and oval-shaped base, slightly bent to the rear and flattened towards the apex, forming anterior and posterior cutting edges at front and rear, the latter serrated by barbed hooks. Kevin Webb (BMNH) kindly took the photographs of the P. warreni syntypes and granted permission to use them. Males are adolescent at 700 to 740 mm, mature at 830 mm and grow to at least 1120 mm TL, females are adolescent at around 950 to 1100 mm TL, are mature when over 1100 mm TL and attain at least 1360 mm TL [30]. Individual values for the juvenile holotype (MNHN 1987–1266), gravid female paratype SAIAB 84039, and adult male paratype SAIAB 84096, as well as ranges for six embryonic paratypes and means for the holotype and eight paratypes. Like in P. kajae, the large interstitial rostral teeth are serrated in large specimens of P. warreni (704 mm TL or larger), whereas all interstitial teeth are unserrated in specimens of 456.4 mm TL or smaller. Rostrum triangular in dorsal view; constricted between barbel origin and nostrils, sides of rostrum nearly straight from tip to barbel origin but concave in posterior part from barbel origin to origin of orbit; tip narrowly rounded; rostrum extending laterally below eyes as a well-defined suborbital ridge along ventrolateral edge of head, terminating somewhat behind level of posterior edge of spiracle (Fig 3). Supervision, Institutional acronyms follow Sabaj [17] except for DMM = Deutsches Meeresmuseum in Stralsund (Germany), ERB = Elasmobranch Research Belgium, Bonheiden (Belgium), RHL = Ruth H. Leeney personal collection, SW = Simon Weigmann personal collection. Specimens were fixed with formalin and stored in 70% ethanol except for dried rostra. Sixgills are huge, up to 15ft or more and built like zeppelins. The authors also would like to thank Roger Bills (SAIAB) and David A. Ebert (MLML) for agreeing to donate three embryonic paratypes of the new species to other institutions, David A. Ebert also for approving the examination and sampling of SAIAB material and commenting on the possible maximum size of Pliotrema sp. Measurements taken from the fresh photographs of the not retained gravid female show that this specimen can be assigned to P. annae sp. DMM I-E/4902: adult female, 700 mm TL, off Mozambique, February to March 1983. The holotype and paratype are deposited in the Zoological Museum Hamburg (ZMH). The photograph was taken and kindly provided by Kevin Webb. The formal descriptions and a redescription of P. warreni based on the syntypes and additional specimens are presented herein; a revised generic diagnosis and a key to the species of Pliotrema are also given. It is graced with mild winters and long warm summers, and for a few intrepid divers some very big sharks. 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. Figs 15–25; Table 3. Barbels about two thirds way from rostral tip to mouth, with prebarbel length about twice distance from barbel origin to symphysis of upper jaw; rostrum not constricted between barbel origin and nostrils; a pronounced yellowish longitudinal stripe on dorsal surface …………………………………… Pliotrema warreni [South Africa, southern Mozambique]. nov. (as Pliotrema warreni) before Séret [26] have been found. First dorsal fin originates about opposite pectoral-fin free rear tips. Pliotrema warreni Regan by original designation. De er lysebrune i fargen, med en hvit mage. P. annae) might be found in these areas but nevertheless would likely be very rare. Share your family tree and photos with the people you know and love. nov. by Séret [26] and Compagno et al. Resources, Eyes lateral on head, large, oval, length 2.9–4.0)% TL; skeletal interorbital space 0.8–1.0 times eye length, 8.7–11.7 times in horizontal preorbital length; posterior eye notches and suborbital grooves present. Scale bars: a,b,d 100 μm, c 50 μm, e 10 μm, f 3 μm. Holotype ZMH 26361, presumably adult female, 981 mm TL fresh, caught on or near Kobela Reef (~6°29’35”S 39°22’21”E) in Menai Bay, Unguja Island, Zanzibar, in a demersal longline at ~20–25 m (i.e. 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/”. Color uniform medium to dark brown dorsally without longitudinal stripes; white ventrally but with few indistinct dark blotches on belly; fins with pronounced white posterior fin margins, particularly caudal and pectoral fins; dorsal rostrum surface with two distinct longitudinal dark stripes, lateral rostral teeth dark-edged. Proposed English vernacular name: Anna’s sixgill sawshark. The median ridge is strongly pronounced and reaches the tip of the median cusp. First dorsal fin originates about opposite pectoral-fin free rear tips. Large lateral rostral teeth of prenarial portion of rostrum variable in length, curved, rather stout, serrated, longest about half way from apex of rostrum to barbel origin; longest tooth immediately anterior to barbels shorter than spiracle length, length 0.5–1.3% TL and 0.5–1.7 times first complete interspace anterior to barbels, width 0.1–0.3% TL; anteriormost tooth close to tip of rostrum small, followed by the first large tooth; large teeth shortest near nostrils, longest rostral tooth posterior to nostrils 0.2–0.8% TL; large teeth absent behind nostrils but interstitial-like teeth present, short to very short and closely set, partially directed almost ventrally, particularly near mouth. 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. Today, Annas is Swedens most beloved gingerbread and sold worldwide. A slender, filamentous, dorsoventrally flattened barbel originating on the ventrolateral margin about two thirds way from rostral tip to mouth on each side, with prebarbel length 1.7–2.1 times distance from barbel origin to symphysis of upper jaw, 60.2–68.0% of preoral length and 16.5–20.2% TL. All specimens of both new species were found in the western Indian Ocean. ERB 1105: adult female, 1310 mm TL, FRS ‘Africana’ Cruise Afr-200, Station A23549 (off South Africa: 35°30’S 20°20’E), collected on 23 September 2004, trawl no. Holotype (SAM 34013/MB-F034013): adult male, 616 mm TL, RV ‘Algoa’, Mozambique Scad Survey, Station C00840 014 037 3074 (Mozambique Channel: 22°07’S 35°45’E), collected on 19 June 1994 with bottom trawl, 500 m depth (photographs only). 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. All four known specimens of this new species were caught in these depths during hours of the darkness / twilight. Biology However, very little information exists about its distribution patterns, migrations and behavior. https://doi.org/10.1371/journal.pone.0228791.g021. Resources, Spiracles moderately large, length 1.2–1.4% TL and 0.3–0.5 times eye length, left spiracle with 10–13 folds, right one with 10–13; spiracles strongly crescentic, oblique, directed posteroventrally from top to bottom, located just posterior to posterior eye notch, separated by a narrow but deep vertical groove along posterior margin of orbit, shorter than eye; upper edge below level of top of eye. The basal face of the root is flat, partly showing some outer foramina. 2b. ZMH 25966: juvenile male, 334 mm TL fresh, 328 mm TL 70% ethanol preserved, same data as ZMH 25963. Pelvic fins moderately large, anterior margin almost straight to slightly convex, 5.8–6.8% TL, 1.5–1.8 times in first dorsal-fin anterior margin, and 1.4–1.6 times in second dorsal-fin anterior margin; apex narrowly rounded; posterior margin concave; inner margin weakly convex and slightly notched basally; free rear tip broadly rounded; origin distinctly posterior to level free tip of first dorsal fin and well forward of level second dorsal fin origin (Fig 26). 2, on the bottom for 45 min, 375–380 m depth. Teeth unicuspidate, in well-defined series, bases oval and flattened with short but pronounced, narrow median cusp near middle of jaw, no lateral cusps; cusps diminishing in height towards jaw angles, indistinct near jaw corners; about 4–5 series of functional teeth (Fig 20). However, Weigmann et al. Furthermore, P. kajae has sharp folds in both upper and lower jaw teeth, as well as a posteriorly notched, teardrop-shaped dorsal fenestra of the precerebral fossa. Fridtjof Nansen’, Survey 2008407, Station 7, Mascarene Ridge, 16°27.62’S 60°16.84’E, 214–219 m depth, bottom trawl # 22, duration 27.3 minutes, 14 Oct 2008 (taken together with 1 further specimen, which was not retained); SAIAB 84096, adult male, 970 mm TL fresh, 940 mm TL 70% ethanol preserved, RV ‘Dr. Both, anterior and posterior faces of the root are curved outwards from the junction of crown and root towards the base of the root. Foramen magnum surrounded by crescent-shaped occipital condyles. The lingual face of the cusp is strongly convex, a well-developed uvula is present at the central crown base. Enjoy her books and if you want to share that with her. Scale bars: a 1 mm, b,c 200 μm, d–f 100 μm. Known from off Madagascar and the Mascarene Ridge in depths from 214 to 320 m (Fig 14). nov. possibly also occurs in deeper waters during the day but enters shallow water during the night. Citation: Weigmann S, Gon O, Leeney RH, Barrowclift E, Berggren P, Jiddawi N, et al. The outer surface of the root shows large basal foramina, which are mostly oval-shaped. The electronic edition of this article conforms to the requirements of the amended International Code of Zoological Nomenclature, and hence the new names contained herein are available under that Code from the electronic edition of this article. 101, on the bottom for 80 min, 395–420 m depth. However, the number of specimens and coverage of different sizes is too small to reliably detect ontogenetic differences. Welcome! Premium rods, reels, hooks and lures. Second dorsal fin somewhat smaller than first but of similar shape, anterior margin weakly convex, apex very narrowly rounded; posterior margin weakly convex distally, strongly concave near basal three quarters; inner margin straight, free rear tip narrowly pointed; origin clearly behind level pelvic insertions; interdorsal space 1.5 (1.4) times first dorsal-fin length, 1.8 (1.6) times dorsal–caudal space; second dorsal-fin inner margin 1.1 (1.1) times subterminal caudal-fin margin (Fig 22b). a–c upper anterolateral tooth in a oblique-labial and b,c occlusal views; d–f upper posterolateral tooth in d oblique-labial and e,f occlusal views; g–i lower anterolateral tooth in g oblique-labial and h,i occlusal views; j–l lower posterolateral tooth in j oblique-labial and k,l occlusal views. Fresh, prior to preservation (paratypes SAIAB 84039 and SAIAB 84096; Fig 13): ground color pale (SAIAB 84096) to light brown (SAIAB 84039) dorsally with two thin yellowish longitudinal stripes (hardly detectable in paratype SAIAB 84096); uniform white ventrally; fins translucent dusky, upper post-ventral caudal-fin and pelvic-fin posterior margins narrowly edged white, weak white edges also present at posterior margins of pectoral and dorsal fins, as well as terminal caudal-fin margin; rostrum translucent dusky, dark edged and with two distinct longitudinal stripes dorsally; lateral rostral teeth dark-edged; ventrolateral keels white. a–f upper anterolateral teeth in a,b labial, c,d lingual, and e,f basal views; g–l lower anterolateral teeth in g,h labial, i,j lingual, and k,l basal views. Her search is made all the more difficult by the dangers of the Mediterranean's treacherous Messina Strait - a narrow channel of water where sixgills are sometimes seen. a–d gravid female, ~980 mm TL, e,f female with saw cut off, ~580 mm to beginning of saw. Yes Subsequently, EB, AJT and PB collected a specimen of Pliotrema from off Zanzibar during a 12-month fisheries landings observer program across the coastal regions of Kenya, Zanzibar, and northern Madagascar [16]. 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. Country borders, lakes, and rivers were visualized by means of the shapefiles supplied by ESRI for the ArcExplorer-Java Edition for Education 2.3.2 (AEJEE). The lingual face of the cusp is strongly convex, a well-developed uvula is present at the central crown base. Uncatalogued: female, 920 mm TL fresh, RV ‘Dr. Morphometric measurements and meristics are given in Table 3. See the complete profile on LinkedIn and discover Anna’s connections and jobs at similar companies. South African Institute for Aquatic Biodiversity, Grahamstown, South Africa, Roles Rostral tooth counts mostly symmetrical between left and right hand sides; left side with 21 (22–31) large teeth, right side with 21 (22–31); anterior to barbels left side with 13 (12–14) large rostral teeth, right side with 13 (13–14), posterior to barbels left side with 8 (9–17) large rostral teeth, right side with 8 (9–17); anterior to nostrils left side with 23 (~19–~24) ventral spines, right side with 23 (~19–~23), anterior to barbel origin left side with 13 (~11–~14) ventral spines, right side with 12 (~12–~13); one enlarged ventral spine, distinctly larger than the other ventral spines, present just in front of each nostril. View the profiles of people named Anna Shawl. Mesyatsev’ Cruise 5, Station 10 (off Kenya: 02°59’5”S 40°30’E), collected by A.D. Druzhinin on 22 December 1975, 287–300 m depth. Small interstitial rostral teeth (Fig 18c) with blade-shaped crown and without serration. Dorsal fenestra of the precerebral fossa spindle-shaped, elongate and long, notched anteriorly and posteriorly (Fig 12b). The surface of the denticles is only weakly structured by reticulations very close to base. Foramen magnum surrounded by crescent-shaped occipital condyles. A slender, filamentous, dorsoventrally flattened barbel originating on the ventrolateral margin about half way from rostral tip to mouth on each side, with prebarbel length 1.0 (1.0–1.1) times distance from barbel origin to symphysis of upper jaw, 51.1 (49.4–52.9)% of preoral length and 15.6 (14.8–16.2)% TL. Based mainly on skeletal and myological features, as well as for Pristiophoriformes. 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