Gold J R, Gall G A
Can J Genet Cytol. 1975 Mar;17(1):41-53. doi: 10.1139/g75-005.
The population variability in chromosome karyotype was examined in six samples of California High Sierra golden trout, Salmo aguabonita. From the analysis of 1,318 cells from anterior kidney tissue of 92 specimens, the modal diploid chromosome number was 2n equals 58 with 104 chromosome arms. Of cells with 2n equals 58 chromosomes, the typical karyotype was one containing 44 chromosomes with median centromeres, 2 chromosomes with submedian centromeres, 2 with subterminal centromeres and 10 with terminal centromeres. In addition, many cells contained a chromosome with a prominent satellite. Variability in chromosome number within the six populations followed a Robertsonian pattern and permitted the identification of two distinct population distributions. One population, made up of two samples, was more variable than the other and supported the hypothesis that this population was of golden trout times rainbow trout hybrid origin. Texamination of metaphase 1 cells from testes showed numerous ring and rod multivalents consistent with the random nature of Robertsonian variability.
对加利福尼亚州内华达山脉金色鳟鱼（Salmo aguabonita）的六个样本进行了染色体核型的群体变异性研究。通过对92个样本的前肾组织中的1318个细胞进行分析，模式二倍体染色体数为2n = 58，有104条染色体臂。在2n = 58条染色体的细胞中，典型核型包含44条具有中着丝粒的染色体、2条具有亚中着丝粒的染色体、2条具有亚端着丝粒的染色体和10条具有端着丝粒的染色体。此外，许多细胞含有一条带有明显随体的染色体。六个群体内染色体数目的变异性遵循罗伯逊模式，并允许识别出两种不同的群体分布。一个群体由两个样本组成，比另一个群体更具变异性，支持了该群体是金色鳟鱼与虹鳟鱼杂交起源的假设。对睾丸中期1细胞的检查显示出许多环状和棒状多价体，这与罗伯逊变异性的随机性一致。
