魚類学雑誌
Online ISSN : 1884-7374
Print ISSN : 0021-5090
ISSN-L : 0021-5090
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
岡本 誠井田 齊杉崎 宏哉栗田 豊
著者情報
ジャーナル フリー

2002 年 49 巻 2 号 p. 97-102

詳細
抄録

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.

著者関連情報
© 日本魚類学会
前の記事 次の記事
feedback
Top