ロシア・バイカル湖オリホン島から初めて見いだされた大型鰓脚甲殻類(カイエビ目)および東アジア産カイエビ目の動物地理学

DOI
  • 長縄 秀俊
    ロシア科学アカデミー(シベリア支部) 地殻研究所

書誌事項

タイトル別名
  • A New Spinicaudatan (Crustacea: Branchiopoda) from the Island of Olkhon (Lake Baikal, Russia) and the Zoogeography of East Asian Spinicaudata.

抄録

A spinicaudatan branchiopod crustacean, Baikalolkhonia tatianae gen. et sp. nov., is described from the Baikal region in Russia. The genus is assigned to the family Cyzicidae STEBBING, 1910, based on the absence of a frontal organ on the head, the absence of triangular epipodal laminae on the thoracopods, and the presence of a pair of large frontal spines on the telson. The main distinguishing characteristic is that the epipodal upper corners of many anterior thoracopods (including even the first pair) are transformed into "sausage-like organs." Since such epipodal processes have been until now unknown in the Cyzicidae, the diagnosis of the family is emended, and 2 newly defined subfamilies, Baikalolkhoniinae and Cyzicinae, are proposed. Up to the present, 11 species belonging to 7 genera in 4 families of Spinicaudata (Cyclestheriidae, Cyzicidae, Leptestheriidae, and Limnadiidae) are known from the neighboring regions of East Asia, including the Russian Far East, Mongolia, China, Korea, and Japan. The list of species and the key to the species are provided. Their distribution defines 4 zoogeographical provinces, and the species diversity clearly shows a latitudinal gradient in a similar pattern to the European fauna.

収録刊行物

キーワード

詳細情報 詳細情報について

  • CRID
    1390001204059482496
  • NII論文ID
    130003442234
  • DOI
    10.3739/rikusui.60.585
  • ISSN
    18824897
    00215104
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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