Feeding chronology of the vertically migrating gonostomatid fish,Vinciguerria nimbaria (Jordan and Williams), off southern Japan |
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| Authors: | Takakazu Ozawa Kiyofumi Fujii Kouichi Kawaguchi |
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| Institution: | (1) Faculty of Fisheries, Kagoshima University, Shimo-arata-cho, 890 Kagoshima, Japan;(2) Present address: Life Sciences Department, Nomura Research Institute, 1600 Kajiwara, 247 Kamakura, Japan;(3) Ocean Research Institute, University of Tokyo, Minamidai, Nakano-ku, 164 Tokyo, Japan |
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| Abstract: | The feeding habits of the gonostomatid fish,Vinciguerria nimbaria (Jordan andWilliams), from off southern Japan were studied in relation to its food organisms, process of digestion, and diel vertical migration. Food organisms were composed mainly of small- to moderate-sized copepods which live almost entirely in the 0–200 m epipelagic zone.V. nimbaria appears to feed twice a day; after having migrated to the epipelagic zone in the evening, all individuals fed intensively from 6 to 8 p.m. They then spent the remainder of the night in digestion. Many, but not all, of the individuals foraged again in the morning. |
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