Geographic distribution and thermal tolerances of the bivalve Nitidotellina hokkaidoensis (Habe)

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  • Kitamura Akihisa
    Institute of Geosciences, Shizuoka University
  • Ikehara Ken
    National Institute of Advanced Industrial Science and Technology. Institute for Marine Resources and Environment
  • Katayama Hajime
    National Institute of Advanced Industrial Science and Technology. Institute for Marine Resources and Environment

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Other Title
  • 二枚貝 Nitidotellina hokkaidoensis (Habe) (サクラガイ) の緯度分布と温度耐性
  • ニマイガイ Nitidotellina hokkaidoensis Habe サクラガイ ノ イド ブンプ ト オンド タイセイ

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Abstract

The bivalve Nitidotellina hokkaidoensis (Habe) lives around Japan and is often found in Pleistocene marine strata. Previous studies have shown that its northern limit is at 37°N latitude along the Pacific coast and about 43°N latitude along the Sea of Japan coast. In addition, the distribution of N. hokkaidoensis extends through Tsugaru Strait to the southern Sanriku coast, and is influenced by the Tsugaru Current. On the basis of water temperature alone, the Sanriku coast is substantially north of the northern limit of N. hokkaidoensis. In this area many warm-water species also live. However, we collected four adult individuals of N. hokkaidoensis at one site in the Sea of Japan (45°4′N, 141°35′E, 35m depth) with cold-water species such as Neohaustator fortilirata (Sowerby) and Yoldia (Cnesterium) johanni Dall. Temporal variations in temperature at this site range between 3.8±0.8℃ and 17.7±2.4℃ at 30m. This demonstrates that N. hokkaidoensis inhabits a wider range of temperatures than previously reported.

Journal

  • Fossils

    Fossils 70 (0), 18-22, 2001

    Palaeontological Society of Japan

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