論文

査読有り
2020年6月15日

Three new meiobenthic species from a submarine cave in Japan: Echinoderes gama, E. kajiharai and E. uozumii (Kinorhyncha: Cyclorhagida)

Journal of the Marine Biological Association of the United Kingdom
  • Hiroshi Yamasaki
  • ,
  • Shinta Fujimoto
  • ,
  • Hayato Tanaka

開始ページ
1
終了ページ
22
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1017/s0025315420000429
出版者・発行元
Cambridge University Press (CUP)

<title>Abstract</title>
Three new species of echinoderid kinorhynchs are described from Daidokutsu, a submarine cave in Ryukyu Islands, Japan. <italic>Echinoderes gama</italic> sp. nov. is characterized by the presence of middorsal acicular spines on segments 4–8; lateroventral acicular spines on segments 7–9; lateroventral tubes on segment 5; sublateral tubes on segment 8; laterodorsal tubes on segment 10; and type-2 gland cell outlets in subdorsal and lateroventral position on segment 2. <italic>Echinoderes kajiharai</italic> sp. nov. is defined by the presence of middorsal acicular spines on segments 4, 6, 8; lateral accessory acicular spines on segment 9; lateroventral acicular spines on segments 6–8; lateroventral tubes on segments 2 and 5; midlateral tubes on segment 10; and type-2 gland cell outlets in laterodorsal position on segments 2 and 5, and subdorsal position on segments 8 and 9. <italic>Echinoderes uozumii</italic> sp. nov. is characterized by the presence of middorsal acicular spines on segments 4 and 6; lateroventral acicular spines on segments 6–9; lateroventral tubes on segments 2 and 5; sublateral tubes on segment 8; laterodorsal tubes on segment 10; type-2 gland cell outlets in subdorsal and lateral accessory position on segment 2; and blunt, short pectinate fringe teeth of primary pectinate fringe on segment 1. In addition, the <italic>Echinoderes multiporus</italic> species group including <italic>E. kajiharai</italic> sp. nov., and the <italic>Echinoderes bispinosus</italic> species group including <italic>E. uozumii</italic> sp. nov. are established. Furthermore, the distribution of the two species groups and the origin of <italic>Echinoderes</italic> species in Daidokutsu are discussed.

リンク情報
DOI
https://doi.org/10.1017/s0025315420000429
URL
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315420000429
ID情報
  • DOI : 10.1017/s0025315420000429
  • ISSN : 0025-3154
  • eISSN : 1469-7769

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