Distribution and species composition of juvenile and adult scombropids (Teleostei, Scombropidae) in Japanese coastal waters

Two scombropid fishes, Scombrops boops and Scombrops gilberti, are closely related and commercially important species in Japan. These species are often confused in commercial markets because of their morphological similarity. In this study, scombropid specimens collected from various Japanese coasta...

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Bibliographic Details
Published in:	Journal of fish biology Vol. 76; no. 2; pp. 369 - 378
Main Authors:	Itoi, S., Odaka, J., Yuasa, K., Akeno, S., Nakajima, A., Suenaga, A., Noda, T., Akimoto, S., Myojin, T., Ikeda, Y., Masuda, Y., Takai, N., Yoshihara, K., Sugita, H.
Format:	Journal Article
Language:	English
Published:	Oxford, UK Blackwell Publishing Ltd 01-02-2010
Subjects:	16S rRNA Animals Biodiversity Boops Demography DNA, Mitochondrial - genetics gnomefish Japan mtDNA Pacific Ocean PCR-RFLP Perciformes - classification Perciformes - genetics Phylogeny RNA, Ribosomal, 16S - genetics Scombrops Scombrops boops Scombrops gilberti Seasons Teleostei Japan Pacific Ocean INW, Japan Sea INW, Japan, Honshu, Izu I INW, Japan, Honshu, Shizuoka Prefect., Izu Peninsula
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Summary:	Two scombropid fishes, Scombrops boops and Scombrops gilberti, are closely related and commercially important species in Japan. These species are often confused in commercial markets because of their morphological similarity. In this study, scombropid specimens collected from various Japanese coastal waters were subjected to polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP) analysis and phylogenetic analysis of the 16S rRNA gene in mitochondrial DNA. These analyses showed that all the scombropid specimens collected from localities in the Sea of Japan were identified as S. boops, whereas those from the Pacific Ocean included two species, S. boops and S. gilberti. Almost all juvenile (<200 mm standard body length, SL) S. gilberti originated from the Pacific coastal waters of the northern Japan, whereas adults (>400 mm SL) were found only in deep water off the Izu Peninsula to the Izu Islands. This suggests that S. gilberti might migrate extensively during its life cycle. In addition, differences in the number of specimens and the distribution between the two species suggest that S. gilberti is less abundant than S. boops in Japanese waters.
Bibliography:	istex:E6BEB654C05E5FD662F4CD26216DA670F8EFBCDB ark:/67375/WNG-Q2J2DRKQ-M ArticleID:JFB2493 Present address: Kanagawa Environment and Agriculture Department Fisheries Division, Yokohama, Kanagawa 231‐8588, Japan ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0022-1112 1095-8649
DOI:	10.1111/j.1095-8649.2009.02493.x