Taxonomy and Ecology of Two New Interstitial Cytheroid Ostracoda (Crustacea) from Shimoda, Central Japan

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概要

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• Two new interstitial cytheroid ostracods are described from a small sandy beach in Shimoda, central Japan: Microloxoconcha ikeyai sp. nov. (Cytheromatidae) and Parvocythere japonica sp. nov. (Parvocytheridae). This is the first record of the genus Parvocythere Hartman, 1959 from Japan. By sampling every two months through a year along a transect extending from the shoreline landward across the study area, the optimal zone for each species was found. The peaks of individual density for M. ikeyai and P. japonica lie seaward and landward, respectively. Both species show a wide tolerance to changes in salinity, but they do not live where fine sand (mode of grain size less than 1/8 mm) is the dominant particle size. In assays of phototaxis, M. ikeyai, which has a naupliar eye, showed negative phototaxis.

• 日本動物分類学会の論文
• 2008-05-31

著者

• Tsukagoshi Akira

  Institute Of Geosciences Faculty Of Science Shizuoka University

• Watanabe Satoshi

  Institute of Geosciences, Faculty of Science, Shizuoka University

• Higashi Ryouichi

  Institute of Geosciences, Faculty of Science, Shizuoka University

• Higashi Ryouichi

  Institute Of Geosciences Faculty Of Science Shizuoka University

関連論文

• A New Combination in the Genus Parapolycope (Crustacea: Ostracoda: Myodocopa: Cladocopina), with the Description of a New Species from Japan
• Brackish-Water Ostracoda (Crustacea) from the Obitsu River Estuary, Central Japan
• Taxonomy and Ecology of Two New Interstitial Cytheroid Ostracoda (Crustacea) from Shimoda, Central Japan
• A New Species of Spinileberis (Crustacea: Ostracoda: Cytheroidea) from the Philippines
• Two New Species of Microloxoconcha (Crustacea: Ostracoda: Podocopida) from Japan, with a Redescription of the Genus
• Projection of glacier mass changes under a high-emission climate scenario using the global glacier model HYOGA2

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