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Development of ragfish, Icosteus aenigmaticus, (Perciformes: Icosteidae) larvae and juveniles from waters off eastern Japan.
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- Okamoto Makoto
- School of Fisheries Science, Kitasato University
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- Ida Hitoshi
- School of Fisheries Science, Kitasato University
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- Sugisaki Hiroya
- 独立行政法人水産総合研究センター東北区水産研究所
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- Kurita Yutaka
- 独立行政法人水産総合研究センター東北区水産研究所
Bibliographic Information
- Other Title
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- 本州東方沖から得られたイレズミコンニャクアジの仔稚魚
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Description
The larval and juvenile development of Icosteus aenigmaticus are described, based on 21 specimens (5.2-54.6mm in body length, BL) collected from waters off north-eastern Japan, and compared with 3 larval specimens (5.5-25.5mm BL) from Northeast Pacific. This report represents the first record of larvae from Northwest Pacific and the first description of juvenile of this species. Initially, larvae had a slender body obscured by thick membrane, but the body deepened with the growth. Head spines were small and limited to the preopercle outer mar-gin from onset of flexion through juvenile stages, number of spines variable 4-7. The final fin-ray complements being established at about 25 mm BL. Postflexion larvae and juveniles had pigmented blotches laterally on the trunk. Juveniles had 10+9 branched caudal-fin rays, a greater number than usual in percoids.
Journal
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- Japanese Journal of Ichthyology
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Japanese Journal of Ichthyology 49 (2), 97-102, 2002
The Ichthyological Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282679744472064
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- NII Article ID
- 130004019298
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- ISSN
- 18847374
- 00215090
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed