A new cave-dwelling genus and species of Nerillidae (Annelida) from the Ryukyu Islands, Japan

被引:4
作者
Worsaae, Katrine [1 ]
Hansen, Malte J. [1 ]
Axelsen, Oscar [1 ]
Kakui, Keiichi [2 ]
Moller, Peter R. [3 ,4 ]
Osborn, Karen J. [5 ]
Martinez, Alejandro [6 ]
Gonzalez, Brett C. [1 ,5 ]
Miyamoto, Norio [7 ]
Fujita, Yoshihisa [8 ]
机构
[1] Univ Copenhagen, Marine Biol Sect, Dept Biol, Univ Pk 4, DK-2100 Copenhagen, Denmark
[2] Hokkaido Univ, Fac Sci, Sapporo, Hokkaido 0600810, Japan
[3] Univ Copenhagen, Nat Hist Museum Denmark, Univ Pk 15, DK-2200 Copenhagen, Denmark
[4] UiT Norwegian Arctic Univ, Norwegian Sch Fisheries, Tromso, Norway
[5] Smithsonian Natl Museum Nat Hist, Dept Invertebrate Zool, Washington, DC USA
[6] Natl Res Council Italy, Water Res Inst, Mol Ecol Grp, Largo Tonolli 50, Verbania 28922, Italy
[7] X STAR Japan Agcy Marine Earth Sci & Technol, 215 Natsushima Cho, Yokosuka, Kanagawa 2370061, Japan
[8] Okinawa Prefectural Univ Arts, 1-4 Shuri Tounokura, Naha, Okinawa 9038602, Japan
基金
日本学术振兴会;
关键词
Anchialine; Marine cave; Meiofauna; Molecular phylogeny; Okinawa prefecture; West Pacific; SUBMARINE CAVE; SP-N; POLYCHAETA; EVOLUTION; MORPHOLOGY; LANZAROTE; CRUSTACEA; SELECTION; ALIGNMENT;
D O I
10.1007/s12526-021-01199-4
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
A new genus and species of Nerillidae, Nipponerilla irabuensis gen. nov., sp. nov., is described from an anchialine cave in Shimoji Island, west of Irabu Island (Miyako Islands, Southwestern Japan). Its morphology was examined with light, scanning electron, and confocal laser scanning microscopy. This new species, along with two putative new cave species from the Turks and Caicos Islands and several closely related nerillids, was included in a phylogenetic analysis employing five concatenated gene markers (16S rRNA, 18S rRNA, 28S rRNA, H3, and COI). Nipponerilla irabuensis gen. nov., sp. nov. was found to be sister taxon to the cave-exclusive genus Speleonerilla Worsaae, Sterrer & Iliffe, in Worsaae et al., 2019, but shows morphological resemblance to both Speleonerilla and Mesonerilla Remane, 1949. Thus, Nipponerilla gen. nov. constitutes a new monotypic genus in Nerillidae diagnosed by a combination of the following characters: nine segments, compound chaetae, high palp and antennae to body length ratios, and gonochoristic reproduction with two pairs of spermioducts opening in segments VII and VIII. Its placement among Nerillidae is discussed, along with its putative adaptations to an anchialine environment.
引用
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页数:18
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