文章摘要
刘晓.^60Co-γ射线对成体长牡蛎生长的影响及致死效应[J].水产学报,2005,29(3):
^60Co-γ射线对成体长牡蛎生长的影响及致死效应
Mortality and growth of cobalt-60 gamma-irradiated adult Pacific oyster, Crassotrea gigas
投稿时间:2014-03-14  修订日期:2014-03-14
DOI:
中文关键词: 长牡蛎 ^60Co-γ 刺激 致死 生长 条件指数
英文关键词: Crassotrea gigas  60Co-C  hormesis  mortality  growth  condition index
基金项目:中国科学院知识创新工程项目,国家高技术研究发展计划(863计划),国家自然科学基金
作者单位地址
刘晓 中国科学院海洋研究所 中国科学院海洋研究所
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中文摘要:
      
英文摘要:
      Effects of ionizing irradiation of 60Co-C ray on mortality and growth of one year- old Pacific oysters ( Crassotrea gigas ) were studied. Irradiation was conducted at 4 e and without sea water, and the survival, shell length, shell width, whole wet weight and condition index of irradiated oy sters were measured. A biphasic dose response effect of 60Co-Cirradiation on Pacific oyster with high stimulatory response dose range to 100 Gy, and strong hormesis effects had been observed. Gamma ray induced mortality happened within 90 days after irradiation, and the relation between dosage ( D) and mortality at 90 day s could be described by the equation of M90= 0. 0041D2- 0. 1816D ( R2 = 0. 9958) w ith an LD50/ 90 of 135 Gy, indicating that the Pacific o yster has strong resistance to 60Co-Cirradiation. Growth in shell length, shell width and whole wet weight of Pacific oy ster were also enhanced by 60 Gy of 60Co-C ray. The condition index was also enhanced by 60Co-C irradiation in the do sage range from 40 to 100 Gy, with the maximum stimulatory response of 2. 5 fold of control value at the 40 Gy do sage, suggesting that the accelerating effects of Cray on growth of the Pacific oyster led to increase in dry meat. Results of this study showed that ionizing irradiation might be useful in the improvement of production traits in shellfish.
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