Data of repeated operation recorded on Japanese log book were examined the validity of identifying the same patch and the resulting change in CPUE. While no change was detected in CPUE some difficulties were thought in identification of krill patch(es).
Abstract:
Annual summary of Japanese krill fishery in the Antarctic was updated with delineation of two different type of operation. Operated areas in 1983/84 and 1984/85 seasons were illustrated and three historical main fishing grounds were identified.