Accumulation of Butyltin Compounds in Risso's Dolphin (Grampus griseus) from the Pacific Coast of Japan: Comparison with Organochlorine Residue Pattern
Accumulation of Butyltin Compounds in Risso's Dolphin (Grampus griseus) from the Pacific Coast of Japan: Comparison with Organochlorine Residue Pattern
复制标题
日本太平洋沿岸的海豚 (Grampus griseus) 中丁基锡化合物的积累：与有机氯残留模式的比较
DOI：
10.1021/es9600486
复制
发表时间：
1996
影响因子：
11.4
通讯作者：
Hiroyuki Tanaka
中科院分区：
文献类型：
--
作者：
G. Kim;S. Tanabe;R. Iwakiri;R. Tatsukawa;M. Amano;N. Miyazaki;Hiroyuki Tanaka
测定了1991年在日本太地采集的利索海豚肝脏中丁胺素（BTs）和鲸脂中有机氯化合物（OCs）的浓度。这些化合物的平均浓度和范围浓度（以湿重为基础）分别为：bt为3.6 μg/g (0.55 ~ 6.0 μg/g)， pcb为25 μg/g (1.7 ~ 120 μg/g)， DDTs为17 μg/g (0.45 ~ 77 μg/g)， CHLs为4.0 μg/g (0.19 ~ 16 μg/g)， HCHs为0.16 μg/g （0.008 ~ 0.74 μg）。雄虫OCs浓度随年龄增长而增加，雌虫OCs浓度随年龄增长而增加，成熟后OCs浓度呈下降趋势。另一方面，雄性和雌性之间的BT浓度没有差异，在成熟（8-10年）之前呈上升趋势，然后保持不变。这表明，与OCs不同，bt在生殖过程中不易转移给后代。Risso海豚的生物放大系数（约6）高于虎头海狮（0.6），这意味着鲸类动物的bt排泄速度比鳍足类动物慢，这是由于鲸类动物对外源生物的降解能力较低，而且鲸类动物没有脱毛等生理过程。
Concentrations of butyltins (BTs) in the liver and organochlorine compounds (OCs) in the blubber of Risso's dolphins collected off Taiji, Japan, in 1991 were determined. Mean and range concentrations (wet weight basis) of these compounds were 3.6 μg/g (0.55-6.0 μg/g) for BTs, 25 μg/g (1.7-120 μg/g) for PCBs, 17 μg/g (0.45-77 μg/g) for DDTs, 4.0 μg/g (0.19-16 μg/g) for CHLs, and 0.16 μg/g (0.008-0.74 μg/g) for HCHs. OCs concentrations increased with age in males in contrast to that in females, which showed a decreasing trend after maturity. On the other hand, no difference was observed in BT concentrations between male and female, which showed increasing levels until maturity (8-10 years) and then remained constant. It is suggested that, unlike OCs, BTs were less transferable to young ones in reproductive processes. Risso's dolphins showed higher biomagnification factor (about 6) than Steller sea lion (0.6), implying a slower excretion rate of BTs in cetaceans than in pinnipeds due to the lower degradation capacity of xenobiotics and the lack of physiological processes such as shedding of hair in cetaceans.