A new cottid species, Icelus sekii (Perciformes: Cottoidei) from Hokkaido, Japan
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概要
- 論文の詳細を見る
A new cottid species, Icelus sekii, is described on the basis of six specimens collected from off Rausu and Urakawa, Hokkaido Island, Japan. This species is distinguished from its congeners by the following combination of characters: supraocular and parietal spines absent; nuchal spine obscure; uppermost preopercular spine unbranched; no scales between dorsal scale row and lateral-line scale row, and no scales below lateral-line scale row; supraocular, parietal, and nuchal cirri present; five dark brown saddles dorsolaterally; anal-fin rays 13; pectoral-fin rays 15; vertebrae 12 + 24~5 = 36~7. Icelus sekii can be mature at the smallest size among the species of Icelus. As a secondary sexual character, the male holotype has unique ensiform flaps on the distal tips of the first dorsal fin.
- Springer Tokyoの論文
- 2006-02-25
著者
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Munehara Hiroyuki
Usujiri Fisheries Station, Field Science Center for Northern Biosphere, Hokkaido University
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Munehara Hiroyuki
Usujiri Fisheries Laboratory Faculty Of Fisheries Hokkaido University
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Yabe Mamoru
Laboratory of Marine Zoology, Faculty of Fisheries, Hokkaido University
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Yabe Mamoru
Laboratory Of Marine Biodiversity Graduate School Of Fisheries Sciences Hokkaido University
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Tsuruoka Osamu
Chair Of Marine Biology And Biodiversity (systematic Ichthyology) Graduate School Of Fisheries Scien
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Yabe Mamoru
Laboratory of Marine Biodiversity (Systematic Ichthyology), Research Faculty of Fisheries Sciences, Hokkaido University
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