3 0 0 0 OA シロサケ集団におけるIDHおよびLDHアイソザイムの地理的分布
- 著者
- 木島 明博 藤尾 芳久
- 出版者
- 公益社団法人 日本水産学会
- 雑誌
- 日本水産学会誌 (ISSN:00215392)
- 巻号頁・発行日
- vol.45, no.3, pp.287-295, 1979-03-25 (Released:2008-02-29)
- 参考文献数
- 9
- 被引用文献数
- 1 4
The chum salmon populations collected from 21 rivers in Japan were analyzed by using as markers the three genes, Idh-A2, Idh-B2, and Ldh-Al, controlling IDH and LDH isozymes. (1) No differences in gene frequencies at the three loci were found between the sexes or between the years of catch. (2) Any two of the 21 river populations showed clear differences of gene frequencies, indicating that they are independent of each other. (3) The chum salmon populations in Japan could be divided into at least 3 groups: Hokkaido group, and the Pacific Ocean and Japan Sea groups of Honshu. (4) A geographical cline of gene frequencies was observed in each of the Pacific Ocean and Japan Sea groups of Honshu, the phenomenon suggests that there has been a mixing of chum salmon individuals between neighboring rivers, though on a small scale.
2 0 0 0 ノリ葉体におけるアイソザイムのヘテロ型変異〔英文〕
- 著者
- 藤尾 芳久 小高 パトリシア・リリアナ・ヒル 原 素之 秋山 和夫
- 出版者
- 日本水産學會
- 雑誌
- 日本水産学会誌 (ISSN:00215392)
- 巻号頁・発行日
- vol.54, no.6, pp.969-974, 1988
- 被引用文献数
- 3 5
Starch gel electrophoresis was carried out to survey the genetic variation in the haploid lavers of the <i>Porphyra</i> sp. claimed to be <i>Porphyra renera</i>. Eleven enzyme loci were resolved and scored. Eight of the eleven loci were monomorphic, while the three loci, catalase (CAT), glucosephosphate isomerase (GPI) and mannosephosphate isomerase (MPI) showed polymorphism. At the <i>Gpi</i> and <i>Mpi</i> loci, a number of lavers had electrophoretic phenotypes characteristic of heterozygotes.<br> In order to compare with <i>Porphyra yezoensis</i>, the allelic frequencies were calculated on the assumption that the heterozygous phenotypes possessed two alleles. The genetic distance between <i>Porphyra</i> sp. and <i>Porphyra yezoensis</i> was 0.1511, indicating the differentiation of the subspecies level.<br> Electrophoretic phenotypes characteristic of heterozygotes is unexpected, since <i>Porphyra</i> lavers are in a haploid phase. Our findings suggest that the plant is either in the diploid phase or that duplication occurs in one of the chromosome sets.