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Characteristics of the Hybrid F1Juveniles between Female Masu Salmon, Oncorhynchus masou, and Male Pink Salmon, Oncorhynchus gorbuscha
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ma, Hai-Fei Yamazaki, Fumio |
| Copyright Year | 1986 |
| Abstract | Large variations were noticed in the F 1 hybrid between female masu salmon and male pink salmon. The hybrids could be clearly divided into 4 types named W. S. Band N. These types were not only different in their appearance but also varied in survival rate and growth rate. Wand S type hybrids lived only during alevin stage. B-type hybrids could not grow up to more than seven centimeters. N-type hybrids showed heterosis and salinity tolerance since early stage. The karyotype analysis of the hybrid embryos revealed also wide varia tions in chromosome number. One out of 14 embryos showed theoretically expected chromo some number of 59. There are however two modes noticed in total distribution of chromo some number having peaks at 52 and 59. Six out of seven numerical characters of N-type hybrids were invariably between those of masu salmon and pink salmon. The N-type hybrids having nature of parental species would be useful materials to analyze genetic mechanisms of life phase division or seaward migration of salmonids. |
| Starting Page | 6 |
| Ending Page | 16 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| Volume Number | 37 |
| Alternate Webpage(s) | https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/23899/1/37(1)_P6-16.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
