静岡県伊豆半島東岸赤沢定置網漁場における漁獲と投棄の傾向
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概要
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We conducted surveys to evaluate actual discards at a set-net located off the Izu Peninsula of central Japan during May - December in 2005. Dead or decomposed captured fish were mostly discarded from the boat. In addition, a reasonable number of consumable fish were wasted at the fish market because of extremely low auction prices. We applied a cross-correlation function using daily catch data of the set-net. Time delays of appearance in catch were calculated for several fish species. Some trends offish appearance were observed for grunt and bullet tuna, and for yellowtail and jack mackerel
- 2007-12-25
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