1,721,119 research outputs found

    Bringing light into deep-sea biodiversity (cover)

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    ARBIZU, PEDRO MARTÍNEZ, BRIX, SASKIA (2008): Bringing light into deep-sea biodiversity (cover). Zootaxa 1866 (1): 1-4, DOI: 10.11646/zootaxa.1866.1.1, URL: http://dx.doi.org/10.11646/zootaxa.1866.1.

    FIGURE 2 in Two new species of the genus Pseudomesus Hansen, 1916 (Isopoda, Asellota) from the Southern hemisphere: Pseudomesus pitombo sp. nov. and Pseudomesus satanus sp. nov.

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    FIGURE 2. Pseudomesus pitombo sp. nov., holotype male (ZMH K–41066). A–G, pereopods 1–7. Scale bar = 100 µm.Published as part of Kaiser, Stefanie & Brix, Saskia, 2007, Two new species of the genus Pseudomesus Hansen, 1916 (Isopoda, Asellota) from the Southern hemisphere: Pseudomesus pitombo sp. nov. and Pseudomesus satanus sp. nov., pp. 21-38 in Zootaxa 1658 on page 25, DOI: 10.5281/zenodo.27401

    FIGURE 1 in First genetic data for species of the genus Haploniscus Richardson, 1908 (Isopoda: Asellota: Haploniscidae) from neighbouring deep-sea basins in the South Atlantic

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    FIGURE 1. CO1 Bayesian phylogenetic tree based on the 658 bp alignment. Branch support shows the ML / MP bootstrap values / posterior probabilities, respectively. (CB) = Cape Basin, (AB) = Angola Basin, (GB) = Guinea basin, (ARB) = ArgentinianBasin.Published as part of Brix, Saskia, Riehl, Torben & Leese, Florian, 2011, First genetic data for species of the genus Haploniscus Richardson, 1908 (Isopoda: Asellota: Haploniscidae) from neighbouring deep-sea basins in the South Atlantic, pp. 79-84 in Zootaxa 2838 on page 82, DOI: 10.5281/zenodo.20172

    Pseudomesus Hansen 1916

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    Pseudomesus Hansen, 1916 Pseudomesus: Hansen, 1916: 72; Birstein, 1963: 65; Chardy, 1974: 412; Svavarsson, 1984: 44. Type species: Pseudomesus brevicornis Hansen, 1916 Diagnosis. Body elongated (more than 5.5 times longer than width of pereonite 2). Pereonites 5–7 of nearly same size. Ischium of posterior pereopods dorsally with anteriorly directed cuticular hook. Carpus of pereopod 1 ventrally with minimum number of three composed setae standing in row. Pleotelson enlarged, dorsally inflated. Uropods uniramous, not extending beyond posterior margin of pleotelson, inserting closely to anus valves; endopod extremely short and nearly bulbous. Sexual dimorphism strongly developed (male: bilateral bulges on the cephalothorax; robust, setose antenna; pleotelson with posterolateral spines; pereopods 5–7 with long natatory setae) (modified after Hansen, 1916; Svavarsson, 1984; Wägele, 1989). Species composition (Table 1). Pseudomesus bispinosus Chardy, 1974; Pseudomesus brevicornis Hansen, 1916; Pseudomesus pitombo sp. nov.; Pseudomesus satanus sp. nov.; Pseudomesus similis Birstein, 1963.Published as part of Kaiser, Stefanie & Brix, Saskia, 2007, Two new species of the genus Pseudomesus Hansen, 1916 (Isopoda, Asellota) from the Southern hemisphere: Pseudomesus pitombo sp. nov. and Pseudomesus satanus sp. nov., pp. 21-38 in Zootaxa 1658 on page 23, DOI: 10.5281/zenodo.27401

    Macrostylis G. O. Sars 1864

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    Key to the Southern Ocean species of Macrostylis 1 Pleotelson rounded laterally.......................................................................................................................................... 4 - Pleotelson not rounded laterally................................................................................................................................... 2 2 Pleotelson laterally straight, with plumose setae................................................................................. M. hirsuticaudis - Pleotelson not laterally straight, without plumose setae............................................................................................... 3 3 Cephalon quadrate, pleotelson with lateral indentation............................................................................ M. bifurcatus - Cephalon triangular, pleotelson slightly produced.................................................................................... M. spiniceps 4 Pereonites 5–7 and pleotelson dorsally setulose.......................................................................................... M. setulosa - Pereonites 5–7 and pleotelson not dorsally setulose..................................................................................................... 5 5 Pereonite 7 and pleotelson with dorsal spine-like setae................................................................................... M. sarsi - Pereonite 7 and pleotelson without dorsal spine-like setae.......................................................................................... 6 6 Pereonites 1–7 subequal, 5–7 with postero-lateral spines.............................................................. M. cerritus sp. nov. - Anterior pereonites wider than posterior pereonites..................................................................................................... 7 7 Distinct postero-lateral spines on pereonites 4–7, cephalon anterior edge straight............................ M. vinogradovae - Small postero-lateral spines on pereonites 4–7, cephalon anterior edge slightly rounded.................... M. bipunctatusPublished as part of Vey, Aidan & Brix, Saskia, 2009, Macrostylis cerritus sp. nov., a new species of Macrostylidae (Isopoda: Asellota) from the Weddell Sea, Southern Ocean *, pp. 356-370 in Zootaxa 2096 (1) on page 367, DOI: 10.11646/zootaxa.2096.1.21, http://zenodo.org/record/532260

    Figure 13. Lepechinella arctica, 6.1 in Diversity and distribution of North Atlantic Lepechinellidae (Amphipoda: Crustacea)

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    Figure 13. Lepechinella arctica, 6.1 mm, ZMH-K 56624 and Lepechinella victoriae, 6.0 mm, ZMH-K 56620, photographed after preservation. Scale bar 1 mm.Published as part of Lörz, Anne-Nina, Brix, Saskia, Jażdżewska, Anna M. & Hughes, Lauren Elizabeth, 2020, Diversity and distribution of North Atlantic Lepechinellidae (Amphipoda: Crustacea), pp. 1095-1122 in Zoological Journal of the Linnean Society 190 on page 1117, DOI: 10.1093/zoolinnean/zlaa024, http://zenodo.org/record/572222

    Figure 2. Lepechinella arctica, 8.3 in Diversity and distribution of North Atlantic Lepechinellidae (Amphipoda: Crustacea)

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    Figure 2. Lepechinella arctica, 8.3 mm, DZMB-HH 56230, Station 879, Faeroe Island Ridge, mandible, maxilla 1, labrum, maxilliped and telson. Scale bar 1 mm.Published as part of Lörz, Anne-Nina, Brix, Saskia, Jażdżewska, Anna M. & Hughes, Lauren Elizabeth, 2020, Diversity and distribution of North Atlantic Lepechinellidae (Amphipoda: Crustacea), pp. 1095-1122 in Zoological Journal of the Linnean Society 190 on page 1105, DOI: 10.1093/zoolinnean/zlaa024, http://zenodo.org/record/572222

    Figure 2. Lepechinella arctica, 8.3 in Diversity and distribution of North Atlantic Lepechinellidae (Amphipoda: Crustacea)

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    Figure 2. Lepechinella arctica, 8.3 mm, DZMB-HH 56230, Station 879, Faeroe Island Ridge, mandible, maxilla 1, labrum, maxilliped and telson. Scale bar 1 mm.Published as part of Lörz, Anne-Nina, Brix, Saskia, Jażdżewska, Anna M. & Hughes, Lauren Elizabeth, 2020, Diversity and distribution of North Atlantic Lepechinellidae (Amphipoda: Crustacea), pp. 1095-1122 in Zoological Journal of the Linnean Society 190 on page 1105, DOI: 10.1093/zoolinnean/zlaa024, http://zenodo.org/record/572222

    Nannoniscidae Hansen 1916

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    FAMILY NANNONISCIDAE HANSEN, 1916 Desmosomidae Sars, 1899: 118; Vanhöffen, 1914: 549; Nannoniscini Hansen, 1916: 83; Nannoniscidae Siebenaller & Hessler, 1977: 17–43. Type genus: Nannoniscus Sars, 1870.Published as part of Kaiser, Stefanie, Kihara, Terue Cristina, Brix, Saskia, Mohrbeck, Inga, Janssen, Annika & Jennings, Robert M., 2021, Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology, pp. 1020-1071 in Zoological Journal of the Linnean Society 193 on page 1029, DOI: 10.1093/zoolinnean/zlaa174, http://zenodo.org/record/563916

    FIGURE 2 in Combining morphological and mitochondrial DNA data to describe a new species of Austroniscus Vanhöffen, 1914 (Isopoda, Janiroidea, Nannoniscidae) linking abyssal and hadal depths of the Puerto Rico Trench

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    FIGURE 2. Bayesian phylogenetic tree of Austroniscus Vanĥffen, 1914 (Crustacea, Isopoda) lineages based on the cytochrome c oxidase subunit I gene (COI), with molecular species delimitations shown as black bars.Published as part of Kaiser, Stefanie, Stransky, Bente, Jennings, Robert M., Kihara, Terue Cristina & Brix, Saskia, 2023, Combining morphological and mitochondrial DNA data to describe a new species of Austroniscus Vanhöffen, 1914 (Isopoda, Janiroidea, Nannoniscidae) linking abyssal and hadal depths of the Puerto Rico Trench, pp. 401-434 in Zootaxa 5293 (3) on page 412, DOI: 10.11646/zootaxa.5293.3.1, http://zenodo.org/record/796122
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