鹿児島県与論島から採集されたスズメダイ科魚類 <i>Stegastes insularis</i> ヨロンスズメダイ（新称）とその分布特性

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  • Records of <i>Stegastes insularis</i> (Perciformes, Pomacentridae) from Yoron-jima Island, the Amami Islands, Kagoshima Prefecture, Japan, and notes on distributional implications for the species
  • 鹿児島県与論島から採集されたスズメダイ科魚類Stegastes insularisヨロンスズメダイ(新称)とその分布特性
  • カゴシマケンヨロントウ カラ サイシュウ サレタ スズメダイカギョルイ Stegastes insularis ヨロンスズメダイ(シンショウ)ト ソノ ブンプ トクセイ

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Seven specimens (21.3–52.3 mm standard length) of the damselfish Stegastes insularis Allen and Emery, 1985, collected from Yoron-jima Island, the Amami Islands, Kagoshima Prefecture, Japan, are described in detail. A review of distributional records in Japanese waters, based on specimens, literature records, and underwater photographs, revealed the species to be distributed mainly in the Ogasawara, Izu and Ryukyu islands. On the basis of an underwater photograph, Kushimoto, Kii Peninsula, Wakayama Prefecture, is regarded as the northernmost record of the species, although it is not considered to reproduce in that area. The occurrence of S. insularis at Minamitori-shima Island appears to have resulted from dispersal from the northern Ogasawara Islands where the species commonly occurs. Known localities of the species, viz., Japan, Taiwan and Christmas Island, and the lack of records from Micronesia and Southeast Asia suggest that the population of Christmas Island is relictual.

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  • 魚類学雑誌

    魚類学雑誌 59 (2), 155-162, 2012

    一般社団法人 日本魚類学会

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