Institute for Animal Breeding and Genetics, Veterinary University, A-1030, Vienna, Austria.
Theor Appl Genet. 1988 Jul;76(1):45-53. doi: 10.1007/BF00288830.
The heterochromatins of rainbow trout (Salmo gairdneri R.), brown trout (Salmo trutta fario L.) and brook trout (Salvelinus fontinalis M.) were characterized by sequential chromomycin A3/distamycin A/DAPI (CDD) and DAPI/actinomycin D (DAPI/AmD) fluorescence. On most biarmed chromosomes, an equilocal localization of prominent DAPI/AmD positive, chromomycin A3 negative, AT-rich blocks at the centromeres were observed in all three species. Band karyotypes of the three species were established. In rainbow trout, several DAPI/AmD positive heterochromatin blocks behaved positive in a silver-staining method. Mitotic and interphase studies proved the presence of inter-individual NOR variation in brown trout. The NORs of brook trout were localized on chromosomes 5, 10, 14, 15 and 29.
虹鳟鱼（Salmo gairdneri R.）、褐鳟鱼（Salmo trutta fario L.）和溪红点鲑（Salvelinus fontinalis M.）的异染色质通过顺序地用 chromomycin A3/distamycin A/DAPI（CDD）和 DAPI/actinomycin D（DAPI/AmD）荧光染色来进行分析。在大多数臂间染色体上，在这三个物种中，在着丝粒处观察到等区定位的明显的 DAPI/AmD 阳性、chromomycin A3 阴性、富含 AT 的块。建立了这三个物种的带核型。在虹鳟鱼中，几种 DAPI/AmD 阳性异染色质块在银染方法中表现为阳性。有丝分裂和间期研究证明了褐鳟鱼存在个体间 NOR 变异。溪红点鲑的 NOR 位于染色体 5、10、14、15 和 29 上。
