Røed K H, Jacobsen M
Department of Morphology, Genetics and Aquatic Biology, Norwegian College of Veterinary Medicine, Oslo.
Mutat Res. 1995 Mar;346(3):159-65. doi: 10.1016/0165-7992(95)90048-9.
Chromosome analyses were carried out on peripheral blood lymphocytes of semi-domestic reindeer in Norway which had been exposed to varying amounts of radiocesium emanating from the Chernobyl accident. The sampling was done in the period 1987-1990. The material included 192 reindeer, originating from four herds in central Norway, an area considerably affected by fallout from the Chernobyl accident, and from three herds in northern Norway which was unaffected by fallout from the accident. Significant heterogeneity in the distribution of chromosome aberrations between herds was observed. The pattern of chromosome aberration frequencies between herds was not related to the variation in radiocesium exposure from the Chernobyl accident. Other factors than the Chernobyl accident appear therefore to be of importance for the distribution of aberration frequencies found among present herds. Within the most contaminated area the reindeer born in 1986 showed significantly more chromosome aberrations than those born both before and after 1986. This could suggest that the Chernobyl accident fallout created an effect particularly among calves, during the immediate post-accident period in the most exposed areas.
对挪威半家养驯鹿的外周血淋巴细胞进行了染色体分析，这些驯鹿接触了切尔诺贝利事故释放的不同量的放射性铯。采样时间为1987年至1990年。样本包括192头驯鹿，分别来自挪威中部受切尔诺贝利事故沉降物严重影响地区的四个鹿群，以及挪威北部未受事故沉降物影响的三个鹿群。观察到不同鹿群之间染色体畸变分布存在显著差异。鹿群之间的染色体畸变频率模式与切尔诺贝利事故放射性铯暴露的差异无关。因此，除切尔诺贝利事故外的其他因素似乎对现有鹿群中发现的畸变频率分布很重要。在污染最严重的地区，1986年出生的驯鹿染色体畸变明显多于1986年之前和之后出生的驯鹿。这可能表明，切尔诺贝利事故沉降物在事故发生后的短期内，对最暴露地区的幼鹿产生了特别的影响。
