琵琶湖産フナにみられる雌雄間の免疫学的相異

概要

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Three types of crucian carp, which are named GENGOROBUNA, NIGOROBUNA and HIWARA, respectively, are known in Lake Biwa. These are distingushed from one another in their eological and morphological characters and are generally accepted as different species. This work was first atttempted to find out whether there are any differences in serological characteristics among them. Saline extracts of muscle were used as antigens, and antisera were obtained from the chicken injected with the antigens. Antigen-antibody reactions were tested by means of Ouchterlony's agar diffusion. Any clear difference among these three types (or species), however, was not recognized in the agar diffusion tests. On the other hand, a specific antigenic component (Fm antigen) was found in females of these three types. It was contained generally in the female muscle, and appeared in 100% of the female GENGOROBUNA and NIGOROBUNA and in 83% of the female HIWARA. Further, the Fm antigen was also detected in 20% of the male GENGOROBUNA, but never in the male NIGOROBUNA and HIWARA. From these results it may be considered that the Fm antigen has some relations with the sex with exceptional cases only in some male GENGOROBUNA and in some female HIWARA. If the Fm antigen is determined by some genetic factors it will become possible to discuss the differentiation of these three types of crucian carp from a standpoint of population genetics.
社団法人日本動物学会の論文
1967-07-15