First Records of the Rare Giant Roughy Hoplostethus grandperrini (Teleostei: Trachichthyiformes) from Japan
Two large specimens [310–476 mm standard length (SL)] of the genus Hoplostethus Cuvier in Cuvier and Valenciennes, 1829, collected from Iwate and Okinawa prefectures, Japan, were recently discovered and identified as Hoplostethus grandperrini Roberts and Gomon, 2012 on the basis of the following cha...
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| Format: | Article |
| Language: | English |
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Japanese Society of Systematic Zoology
2023-11-01
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| Series: | Species Diversity |
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| _version_ | 1797219415563960320 |
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| author | Ryo Misawa Yuma Takanashi Yo Su Chih-Wei Chang Yoshiaki Kai |
| author_facet | Ryo Misawa Yuma Takanashi Yo Su Chih-Wei Chang Yoshiaki Kai |
| author_sort | Ryo Misawa |
| collection | DOAJ |
| description | Two large specimens [310–476 mm standard length (SL)] of the genus Hoplostethus Cuvier in Cuvier and Valenciennes, 1829, collected from Iwate and Okinawa prefectures, Japan, were recently discovered and identified as Hoplostethus grandperrini Roberts and Gomon, 2012 on the basis of the following characteristics: large body size, exceeding 300 mm SL; abdominal scutes strong; pectoral fins light red; caudal-fin tip without black pigmentation; upper margin of eye almost horizontally level with lateral-line origin; predorsal scales not enlarged; fin spines moderately thickened; pectoral-fin tip not reaching anal-fin origin; anterior part of oral cavity, including underside of tongue, without black pigmentation; 15–17 pectoral-fin rays; 21 predorsal scales; and 13 or 14 abdominal scutes. Furthermore, a molecular phylogenetic analysis of a partial sequence of the mtDNA COI gene from one of the specimens placed it in the same clade as H. grandperrini previously recorded from Taiwan, with an uncorrected p-distance between both specimens of 0.19%. Hoplostethus grandperrini was originally described on the basis of two specimens collected off New Caledonia, with only one additional specimen having been reported (from southern Taiwan). The Japanese specimens are the first records of the species from Japan, the fourth and fifth specimens known, and the Iwate Prefecture specimen the northernmost record of the species. |
| first_indexed | 2024-04-24T12:33:17Z |
| format | Article |
| id | doaj.art-be481aa98a194389adf68fa052e0bd31 |
| institution | Directory Open Access Journal |
| issn | 1342-1670 2189-7301 |
| language | English |
| last_indexed | 2024-04-24T12:33:17Z |
| publishDate | 2023-11-01 |
| publisher | Japanese Society of Systematic Zoology |
| record_format | Article |
| series | Species Diversity |
| spelling | doaj.art-be481aa98a194389adf68fa052e0bd312024-04-07T22:15:59ZengJapanese Society of Systematic ZoologySpecies Diversity1342-16702189-73012023-11-0128224525310.12782/specdiv.28.245First Records of the Rare Giant Roughy Hoplostethus grandperrini (Teleostei: Trachichthyiformes) from JapanRyo Misawa0Yuma Takanashi1Yo Su2Chih-Wei Chang3Yoshiaki Kai4Demersal Fish Resources Division, Fisheries Stock Assessment Center, Fisheries Resources Institute, Japan Fisheries Research and Education AgencyLaboratory of Marine Biology, Faculty of Science and Technology, Kochi UniversityDepartment of Marine Biotechnology and Resources, National Sun Yat-sen UniversityMarine Ecology and Conservation Research Center, National Academy of Marine ResearchMaizuru Fisheries Research Station, Field Science Education and Research Center, Kyoto UniversityTwo large specimens [310–476 mm standard length (SL)] of the genus Hoplostethus Cuvier in Cuvier and Valenciennes, 1829, collected from Iwate and Okinawa prefectures, Japan, were recently discovered and identified as Hoplostethus grandperrini Roberts and Gomon, 2012 on the basis of the following characteristics: large body size, exceeding 300 mm SL; abdominal scutes strong; pectoral fins light red; caudal-fin tip without black pigmentation; upper margin of eye almost horizontally level with lateral-line origin; predorsal scales not enlarged; fin spines moderately thickened; pectoral-fin tip not reaching anal-fin origin; anterior part of oral cavity, including underside of tongue, without black pigmentation; 15–17 pectoral-fin rays; 21 predorsal scales; and 13 or 14 abdominal scutes. Furthermore, a molecular phylogenetic analysis of a partial sequence of the mtDNA COI gene from one of the specimens placed it in the same clade as H. grandperrini previously recorded from Taiwan, with an uncorrected p-distance between both specimens of 0.19%. Hoplostethus grandperrini was originally described on the basis of two specimens collected off New Caledonia, with only one additional specimen having been reported (from southern Taiwan). The Japanese specimens are the first records of the species from Japan, the fourth and fifth specimens known, and the Iwate Prefecture specimen the northernmost record of the species.trachichthyidaenorthernmost recordrange extensionnew japanese namecoi |
| spellingShingle | Ryo Misawa Yuma Takanashi Yo Su Chih-Wei Chang Yoshiaki Kai First Records of the Rare Giant Roughy Hoplostethus grandperrini (Teleostei: Trachichthyiformes) from Japan Species Diversity trachichthyidae northernmost record range extension new japanese name coi |
| title | First Records of the Rare Giant Roughy Hoplostethus grandperrini (Teleostei: Trachichthyiformes) from Japan |
| title_full | First Records of the Rare Giant Roughy Hoplostethus grandperrini (Teleostei: Trachichthyiformes) from Japan |
| title_fullStr | First Records of the Rare Giant Roughy Hoplostethus grandperrini (Teleostei: Trachichthyiformes) from Japan |
| title_full_unstemmed | First Records of the Rare Giant Roughy Hoplostethus grandperrini (Teleostei: Trachichthyiformes) from Japan |
| title_short | First Records of the Rare Giant Roughy Hoplostethus grandperrini (Teleostei: Trachichthyiformes) from Japan |
| title_sort | first records of the rare giant roughy hoplostethus grandperrini teleostei trachichthyiformes from japan |
| topic | trachichthyidae northernmost record range extension new japanese name coi |
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