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    CPUE and recruitment indices calculated from log book data of Japanese krill fisheries

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    Document Number:
    WG-EMM-96/50
    Author(s):
    Ichii, T., Kawaguchi, S., Naganobu, M.
    Agenda Item(s)
    WG-EMM-96 - - undefined
    Abstract

    CPUE and Recruitment indices during 1980 to 1995 were calculated based on the log book data from commercial krill trawlers. Long-term variation of monthly CPUE was shown but this trend might be the result of the alternation of operational strategy in relation to the product quality. Recruitment indices in this paper agreed with Sigel and Loeb (1995) in genaral trend, however, some disagreements were also adressed.