著者
宗像 みずほ 冨岡 森理 角井 敬知
出版者
利尻町立博物館
雑誌
利尻研究 (ISSN:09199160)
巻号頁・発行日
vol.42, pp.5-18, 2023-03

We report six freshwater ostracods from Rishiri Island, Hokkaido, Japan: Cypricercinae sp., Cavernocypris sp.1, Ca. sp.2, Cypridopsis vidua, Candonini sp., and Metacypris cf. digitiformis. This is the first report of freshwater ostracods from this island. We provided brief descriptions of their morphology, presented partial nucleotide sequences for their mitochondrial cytochrome c oxidase subunit I(COI) and/or nuclear 18S rRNA genes, and determined a partial 16S rRNA sequence for the endosymbiotic bacterium Cardinium in some species. A key to six species collected from this island was presented.
著者
松石 隆 松田 純佳 黒田 実加 佐藤 雅彦 佐藤 里恵 石川 創
出版者
利尻町立博物館
雑誌
利尻研究 (ISSN:09199160)
巻号頁・発行日
vol.36, pp.83-88, 2017-03

Rishiri Island is located in the Sea of Japan off the west coast of Hokkaido, Japan. Stranding record at this island could be important information for understanding the migration of the cetacean in the Sea of Japan. A total of 21 stranding records were collected. Each stranding records consisted of one individual. The records include 6 Stejneger's beaked whales Mesoplodon stejnegeri (including one unidentified Mesoplodon), 4 Dall's porpoises Phocoenoides dalli (one truei-type, two dalli-type and one type unidentified), 4 harbor porpoises Phocoena phocoena, 3 Baird's beaked whales Berardius bairdii, 1 killer whale Orcinus orca, 1 beluga Delphinapterus leucas (sighting) and 2 unidentified cetaceans.