GENETIC-DAMAGE IN A POPULATION OF SLIDER TURTLES (TRACHEMYS-SCRIPTA) INHABITING A RADIOACTIVE RESERVOIR

被引：59

作者：

LAMB, T ^{[1
]}

BICKHAM, JW ^{[1
]}

GIBBONS, JW ^{[1
]}

SMOLEN, MJ ^{[1
]}

MCDOWELL, S ^{[1
]}

机构：

[1] TEXAS A&M UNIV SYST,DEPT WILDLIFE & FISHERIES SCI,COLLEGE STN,TX 77843

来源：

ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 1991年 / 20卷 / 01期

关键词：

D O I：

10.1007/BF01065340

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Turtles inhabiting a radioactive reservoir appear to experience genetic damage due to environmental exposure to low concentrations of long-lived radionuclides. Total body burdens for the 50 reservoir turtles examined in the survey ranged from 164.7-4679.3 Bq for cesium-137 and from 462.6-5098.3 Bq for strontium-90. Flow cytometric (FCM) assays of red blood cell nuclei demonstrated significantly greater variation in DNA content for the reservoir turtles than for turtles from a nearby, non-radioactive site. Furthermore, two of the reservoir turtles possessed FCM profiles that are indicative of aneuploid mosaicism. These data strongly suggest that exposure to low-level radiation may involve a sensitive genetic response in a natural population.

引用

页码：138 / 142

页数：5