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29 results for “Etmopteridae”
In the intimacy of the darkness: genetic polyandry in deep-sea luminescent lanternsharks Etmopterus spinax and Etmopterus molleri (Squaliformes, Etmopteridae)
<p>Multiple paternity seems common within elasmobranchs. Focusing on two deep-sea shark species: the velvet belly lanternshark, <em>Etmopterus spinax</em>, and the slendertail lanternshark, <em>Etmopterus molleri</em>, we inferred the paternity in 31 <em>E. spinax</em> litters from Norway (3-18 embryos per litter) and 6 <em>E. molleri</em> litters from Japan (3-6 embryos), using 21 and 10 specific microsatellites, respectively. At least two <em>E. spinax</em> litters were sired from multiple fathers each, with highly variable paternal skew (1:1 to 9:1). Conversely, no clear signal of genetic polyandry was found in <em>E. molleri</em>.</p> <p>This dataset contains the microsatellite genotypes analysed (281 <em>E. spinax</em> × 29 loci; 42 <em>E. molleri</em> × 19 loci).</p>
FIGURE 4 in Etmopterus lailae sp. nov., a new lanternshark (Squaliformes: Etmopteridae) from the Northwestern Hawaiian Islands
FIGURE 4. Ventral flank marking between pelvic fins and lower caudal origin of Etmopterus lailae new species (holotype BPBM 40183).
FIGURE 3 in Etmopterus lailae sp. nov., a new lanternshark (Squaliformes: Etmopteridae) from the Northwestern Hawaiian Islands
FIGURE 3. Dermal denticle arrangement on ventral snout surface of (a) Etmopterus lailae new species (holotype BPBM 40183) and (b) E. lucifer (syntype, CAS-SU 6863). Arrows denote areas of presence (E. lucifer) or absence (E. lailae) of dermal denticles.
FIGURE 11 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 11. Lateral view of (A) Etmopterus brachyurus (field code HO-250, female 344 mm TL, Taiwan); (B) Etmopterus evansi (ASIZ unreg. field code CP3713, female 177 mm TL, Papua New Guinea); (C) Etmopterus fusus (NTUM 10318, female 256 mm TL, Papua New Guinea).
FIGURE 5 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 5. Digital radiograph highlighting dermal denticle arrangement of paratype NTUM 10316 [1 of 3]) along caudal peduncle and caudal fin.
FIGURE 1 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 1. Lateral view of the holotype of Etmopterus samadiae n.sp., adult male (NTUM 10078, 265 mm TL), (A) fresh; (B) post-preservation.
FIGURE 2 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 2. Dorsal view of paratype of Etmopterus samadiae n.sp., female (NTUM 10316, 1 of 3, 177 mm TL), fresh.
FIGURE 8 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 8. Posterior lateral view of Etmopterus samadiae n.sp. (paratype, NTUM 10314, female 258 mm TL), highlighting the dash-like markings. Arrows show location of the rows of dash marks.
FIGURE 7 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 7. Diagrammatic representation of the flank and caudal base luminescent markings in ventral view of: A) Etmopterus brachyurus (CSIRO H 5611-01, largest); B) Etmopterus dislineatus (holotype, CSIRO H 1416-01); C) Etmopterus evansi (holotype, CSIRO H 3141-16); D) Etmopterus samadiae n.sp. (paratype, NTUM 10314).
FIGURE 4 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 4. Upper and lower tooth morphology of the adult male holotype of Etmopterus samadiae n.sp. (NTUM 10078, 265 mm TL).
FIGURE 3 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 3. Ventral head of the holotype of Etmopterus samadiae n.sp., adult male (NTUM 10078, 265 mm TL).
FIGURE 10 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 10. Map showing the capture locations of the type specimens of Etmopterus samadiae n.sp. (yellow star denotes holotype, yellow circles paratypes), Etmopterus fusus (blue circle) and Etmopterus evansi (red circles) in Papua New Guinea (Image © NASA, TerraMetrics, Google Earth).
FIGURE 13 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 13. Posterior luminescent markings (caudal base, central caudal, and posterior markings) on Etmopterus fusus (NTUM 10318, female 256 mm TL, Papua New Guinea).
FIGURE 12 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 12. Lateral flank marking of Etmopterus evansi (NTUM 10312, juvenile male 172 mm TL), highlighting the dark blotch on ventral surface near ventral caudal origin, long posterior finger of caudal base marking, and double line of dashes above flank marking.
FIGURE 9 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 9. Maximum Likelihood tree estimated under the General Time Reversible model (GTR) with model terms to accommodate both Invariant sites (I) and Gamma distributed rates (G). Bootstrap support values are shown from a separate ML bootstrap analysis. Sequences used in this tree are part of the Chondrichthyan Tree of Life project (http://sharksrays.org/).
FIGURE 6 in Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea
FIGURE 6. Dermal denticle morphology and arrangement on lateral side behind second dorsal fin of the adult male holotype of Etmopterus samadiae n.sp. (NTUM 10078, 265 mm TL).
FIGURE 3 in First record of the parasitic barnacle Anelasma squalicola Darwin, 1852 (Pollicipedomorpha: Pollicipedidae) in the Eastern Pacific Ocean and a new host report: Etmopterus benchleyi Vásquez, Ebert & Long, 2015 (Squaliformes: Etmopteridae)
FIGURE 3. Anelasma squalicola (UCR 3711-001) found as parasite of the Ninja lanternshark, Etmopterus benchley. A. Specimen of ~28.8 mm TL, parasite of a female shark of 43.5 cm TL (see Fig. 1); Ovigerous specimen of ~29.1 mm TL parasite of a male shark of 52.5 cm TL (see Fig. 2); the arrowhead points towards the eggs within the mantle cavity. The peduncular bulbous structure covered with fine and root-like filaments was not properly removed from the shark tissue and, therefore, is not illustrated in the figure. Scale bar 2 cm.
FIGURE 2 in First record of the parasitic barnacle Anelasma squalicola Darwin, 1852 (Pollicipedomorpha: Pollicipedidae) in the Eastern Pacific Ocean and a new host report: Etmopterus benchleyi Vásquez, Ebert & Long, 2015 (Squaliformes: Etmopteridae)
FIGURE 2. Etmopterus benchleyi (UCR 2906-002), male (52.5 cm TL), infected by the parasitic barnacle Anelasma squalicola. A. Lateral view of the entire specimen prior to removing the parasite (Figure 3B); B. Lateral view of the entire specimen after removing the parasite; and C. Lateral view of the infected area (the basis of the left pectoral fin), prior to removing one parasite, showing a double infection. Scale bar 2 cm.
FIGURE 1 in First record of the parasitic barnacle Anelasma squalicola Darwin, 1852 (Pollicipedomorpha: Pollicipedidae) in the Eastern Pacific Ocean and a new host report: Etmopterus benchleyi Vásquez, Ebert & Long, 2015 (Squaliformes: Etmopteridae)
FIGURE 1. Etmopterus benchleyi (UCR 2906-002), female (43.5 cm TL), infected by the parasitic barnacle Anelasma squalicola. A. Lateral view of the entire specimen after removing the parasites; B. Lateral view of the infected area showing an imbibed parasite; C. Laterodorsal view of the infected area, after removing the parasite, showing a double infection. Scale bar 2 cm.
FIGURE 1 in Etmopterus marshae sp. nov, a new lanternshark (Squaliformes: Etmopteridae) from the Philippine Islands, with a revised key to the Etmopterus lucifer clade
FIGURE 1. Etmopterus marshae new species, lateral view of holotype (PNM 15353, male 213 mm TL), (A) fresh; (B) postpreservation.
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