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Seasonal change in daily ration of brown sole Pleuronectes herzensteini in the coastal waters of northern Niigata Prefecture, Japan

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Title: Seasonal change in daily ration of brown sole Pleuronectes herzensteini in the coastal waters of northern Niigata Prefecture, Japan
Authors: Tominaga, Osamu Browse this author
Nashida, Kazuya Browse this author
Maeda, Tatsuaki Browse this author
Takahashi, Toyomi Browse this author
Issue Date: 1995
Publisher: Alaska Sea Grant Collage Program, University of Alaska
Citation: (Lowell Wakefield Fisheries Symposium)
Journal Title: Proceedings of the International Symposium on North Pacific Flatfish
Start Page: 261
End Page: 284
Abstract: Stomach contents of 2,407 brown sole Pleuronectes herzensteini collected from the Sea of Japan off northern Niigata Prefecture, Japan, during 1982-1985 were examined to estimate daily ration. Samples were collected throughout the 24-h day. Instantaneous evacuation rate (R) was estimated from the depletion of stomach contents (percent body weight) with time during the night for using Elliott and Persson's (1978) model. When the obvious feeding periodicity was not seen, R was estimated from the relationship between R and temperature (T) described by Durbin et al. (1983); R=0.043e^0.115T. Gastric evacuation rates were used in conjunction with the field data to estimate the daily ration. Brown sole fed mainly on polychaetes through the year except April 1984. Bregmaceros japonicus (Pisces; Bregmacerotidae) was an important component of the diet in April 1984. Daily ration was high during the post-spawning season and highest in May (4.75% of body weight). In autumn and winter, the daily ration was low and was lowest in February/March, just before the spawning season (0.48% of body weight). The seasonal variation of the daily ration seems to be closely related to physiological conditions. It is estimated that the annual ration was about 831.5% of body weight and about 8,870 metric tons of food were consumed by brown sole per year in this study area.
Description: International Symposium on North Pacific Flatfish. 26-28 October 1994. Anchorage, Alaska, USA.
Conference Name: International Symposium on North Pacific Flatfish
Conference Place: Anchorage, Alaska
Rights: 1995. Proceedings of the International Symposium on North Pacific Flatfish. Alaska Sea Grant College Program, University of Alaska Fairbanks.
Type: proceedings
URI: http://hdl.handle.net/2115/38644
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 高橋 豊美

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