珊瑚海のビンナガマグロの卵巣に関する二,三について

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We discovered the comparatively ripe ovary and un-ripe ovary from Albacores which were fished by Japanese fishing boat “No. 8 Kairyu Maru” in the Coral Sea January 1954. This is new-fact which was not noted by now. According to our observation and measurement two comparatively perfect samples have nearly the same length, 28.8cm, 29.0cm. and nearly the same rear tip width, 1.1cm, 1.2cm, but the weight ratio, 289.1 gr. : 101.5 gr. (1:1/2.8), respectively (Table 1). By the egg-diameter measurement of ripe ovary sample A we found that the development of eggs have the same diameter in, vertical sections for the center of ovary, but not in every parts of parallel sections for the center-ovary, and the diameter is 0.397±0.028mm ?? 0.445±0.020mm, two samples are not perfect ripe ovary. We presume that the Coral Sea and the easterly adjoining sea are. Albacores spawning area.
公益社団法人日本水産学会の論文