Proportions of the discard to the total fish and shellfish caught by a small beam trawler in the Suounada area of the Seto Inland Sea [Japan]
2007
Kimura, H.(Yamaguchi-ken. Fisheries Research Center, Nagato (Japan))
The beam trawlers use small mesh codend between 9 mm and 12.5 mm in mesh side by rules in the Seto Inland Sea off Yamaguchi prefecture. Author analyzed whole fish and shellfish caught by twenty hauls in five trips during the period between April 14, 2003 and July 1, and estimated 94.3% in number, 80.9% in weight of the total catch biomass was discarded. The proportions of the discard to the total catch in number for those targets of the beam trawler were 0.87-0.98 in flounders, 0.22-1.00 in shrimps, 0.94 in mantis shrimp, and there were serious wastages of pre-marketable demersal fish and shellfish.
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