Rhamphocottus nagaakii (Cottoidea : Rhamphocottidae), a new species of grunt sculpin from the northwestern Pacific, with notes on the phylogeography of the genus Rhamphocottus

Munehara, Hiroyuki; Togashi, Kouji; Yamada, Sayuri; Higashimura, Takushi; Yamazaki, Aya; Suzuki, Shota; Abe, Takuzo; Awata, Satoshi; Koya, Yasunori; Tsuruoka, Osamu

Rhamphocottus nagaakii (Cottoidea : Rhamphocottidae), a new species of grunt sculpin from the northwestern Pacific, with notes on the phylogeography of the genus Rhamphocottus

Munehara, Hiroyuki; Togashi, Kouji; Yamada, Sayuri et al.

Ichthyological research, 2022, 70, 268-285

Permalink : https://hdl.handle.net/2115/90323

このアイテムのアクセス数:594件（2026-01-16 03:06 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
Ichthyological Research_Munehara, H., Togashi, K., Yamada, S. et al	pdf	4.28 MB	202

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/90323
タイトル	Rhamphocottus nagaakii (Cottoidea : Rhamphocottidae), a new species of grunt sculpin from the northwestern Pacific, with notes on the phylogeography of the genus Rhamphocottus
著者	Munehara, Hiroyuki ; Togashi, Kouji ; Yamada, Sayuri ; Higashimura, Takushi ; Yamazaki, Aya ; Suzuki, Shota ; Abe, Takuzo ; Awata, Satoshi ; Koya, Yasunori ; Tsuruoka, Osamu
e-Rad_Researcher 80212249 著者名 Munehara, Hiroyuki
著者名 Togashi, Kouji
著者名 Yamada, Sayuri
著者名 Higashimura, Takushi
著者名 Yamazaki, Aya
著者名 Suzuki, Shota
著者名 Abe, Takuzo
e-Rad_Researcher 60569002 著者名 Awata, Satoshi
e-Rad_Researcher 30273113 著者名 Koya, Yasunori
著者名 Tsuruoka, Osamu
言語	英語
キーワード	Perciformes
	Rhamphocottus richardsonii
	Mitochondrial DNA
	Divergence time
	Discrete distribution
発行日	2022-08-23
出版者	Springer
収録物名	Ichthyological research
巻(号)	70
ページ	268-285
抄録	A new species of grunt sculpin, Rhamphocottus nagaakii inhabiting the northwestern Pacific, previously identified as Rhamphocottus richardsonii Gunther 1874, is described based on genetic evidence and morphological differences. The new species can be distinguished based on morphometric characters related to the head, including head length [45.3-54.6% of standard length (SL)], postorbital head length (18.8-25.5% SL) and the length of pectoral-fin base (15.8-20.7% SL), which are smaller than in R. richardsonii (53.6-60.5% SL, 26.2-31.7% SL, and 19.5-25.2% SL, respectively). Genetic differences between two species markedly exceed levels for intra-specific differences. Rhamphocottus nagaakii is considered to have arisen from a common ancestor of the two species, which probably inhabited somewhere the North Pacific Rim around the Aleutian Archipelago. During a period of cooling in the Pliocene or the Miocene, R. nagaakii and R. richardsonii became separated to the southern regions of the northwestern and northeastern Pacific, and subsequently underwent speciation.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s10228-022-00885-y
PISSN	1341-8998
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s10228-022-00885-y