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이장욱,황선재,문대연 한국수산자원학회 1998 한국수산자원학회지 Vol.1 No.1
This paper describes changes in gear construction of Korean tuna long line in the Pacific Ocean during the period of 1998~1996. In recent years, an increasing trend existed in distance respective between neighbouring buoys, lengths of middle part of branch line and lengths of wire leader, and a decrease in length of upper part of branch line, The hook rates of bigeye tuna showed a little bit low values between the 5th and 11th branch lines as compared with those in the previous years of the study period. With regard to leader material, wire has replaced by monofilament since 1988 and the proportion has increased up to about 90% in yellowfin tunas whereas wire leaders for albacore, billfishes and sharks.