Bioaccumulation of cesium-137 in yellow bullhead catfish (Ameiurus natalis) inhabiting an abandoned nuclear reactor reservoir
Bioaccumulation of cesium-137 in yellow bullhead catfish (Ameiurus natalis) inhabiting an abandoned nuclear reactor reservoir
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DOI：
10.1002/etc.5620160231
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发表时间：
1997-02-01
影响因子：
4.1
通讯作者：
Brisbin, IL
中科院分区：
文献类型：
--
作者：
McCreedy, CD;Jagoe, CH;Brisbin, IL
研究了居住在南卡罗来纳州巴恩韦尔公司萨凡纳河遗址B池废弃反应堆水库中的黄头鲶鱼（Ameiurus natalis）体内Cs-137的生物积累。我们用陷阱网收集鱼，并从胸刺中确定年龄。用nai闪烁法测定肌肉和其他组织中Cs-137的含量。肌肉Cs-137与性别（p = 0.859）和鱼的质量（p = 0.224）无关，但与年龄（p = 0.036）有关。最小二乘均数检验表明，肌肉中的Cs-137在大约3岁时增加，但不随年龄增加而增加（1、2、3、3、5和6岁的均数分别为2,630、3,011、3,513、3,417、3,599和3,339 Bq/kg）。改进的Richards模型显示，肌肉中铯-137的平衡浓度（3,625 Bq/kg）在大约2.4年内达到。两性间生长差异显著（p < 0.001），达到体重渐近所需时间长于达到平衡铯-137浓度所需时间。男性在大约6.3年的时间里达到了577 g的渐近质量；女性在大约5.9年达到438 g的渐近肿块。种群累积Cs-137负荷为4.9 x 10(6) Bq，代表
Bioaccumulation of Cs-137 was investigated in yellow bullhead catfish (Ameiurus natalis) inhabiting an abandoned reactor reservoir, Pond B, Savannah River Site, Barnwell Co., South Carolina. We collected fish by trap-netting, and determined ages from pectoral spines. Muscle and other tissues were assayed for Cs-137 by NaI-scintillation. Muscle Cs-137 was unrelated to sex (p = 0.859) or mass of fish (p = 0.224), but was related to age (p = 0.036). Examination of least-squares means suggested that Cs-137 in muscle increased up to about age 3, but did not increase with greater age (means for 1, 2, 3, 3, 5, and 6 year olds were 2,630, 3,011, 3,513, 3,417, 3,599, and 3,339 Bq/kg, respectively). A modified Richards model showed equilibrium Cs-137 concentration in muscle (3,625 Bq/kg) was acquired in approximately 2.4 years. Growth differed between sexes (p < 0.001), and the time to asymptotic body mass was longer than the time to attain equilibrium Cs-137 concentration. Males attained an asymptotic mass of 577 g in approximately 6.3 years; females attained an asymptotic mass of 438 g in approximately 5.9 years. The cumulative Cs-137 burden of the population was 4.9 x 10(6) Bq, representing