Vertical Distribution and Feeding Habits of Japanese Sandfish (<I>Arctoscopus japonicus</I>) Larvae and Juveniles off Akita Prefecture in the Sea of Japan

DOI JASI HANDLE Web Site 45 References Open Access
  • Komoto Ryota
    Institute of Fisheries, Akita Prefectural Agriculture, Forestry and Fisheries Research Center Graduate School and Faculty of Fisheries Sciences, Hokkaido University
  • Kudou Hironori
    Institute of Fisheries, Akita Prefectural Agriculture, Forestry and Fisheries Research Center
  • Takatsu Tetsuya
    Graduate School and Faculty of Fisheries Sciences, Hokkaido University

Bibliographic Information

Other Title
  • 秋田県沿岸におけるハタハタ仔稚魚の水深別分布と食性
  • アキタケン エンガン ニ オケル ハタハタ シチギョ ノ スイシン ベツ ブンプ ト ショクセイ

Search this article

Abstract

To better understand the bathymetric distribution and feeding habits of Japanese sandfish (Arctoscopus japonicus) larvae and juveniles off Akita Prefecture, their abundance, diet, and prey size distributions were investigated from February to May 2009. Larvae and juveniles were distributed along the sea floor at temperatures of 7.3-12.2°C, and they ontogenetically shifted from the coastal spawning ground (0.5-5 m bottom depth) to offshore areas (bottom depth≥60 m). Juveniles were not found on the bottom at temperatures ≥13.2°C. Newly hatched larvae had a notochord length of ca. 12 mm and morphologically well-developed compared with other marine fish larvae. Pelagic and demersal copepodites were dominant in the diet of 12-30 mm long sandfish larvae, and mysids were dominant in the diet of ≥40 mm long juveniles. The mysid Xenacanthomysis pseudomacropsis might be an important prey item for sandfish juveniles in their nursery ground because it is larger than other pelagic and demersal crustacean prey, and it co-occurs with sandfish juveniles.

Journal

  • Aquaculture Science

    Aquaculture Science 59 (4), 615-630, 2011

    Japanese Society for Aquaculture Science

References(45)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top