Skip to main content

Table 2 Radiocecium concentrations (exceeding the detection limit) in freshwater fishes examined between May 2011 and March 2014 in the present study

From: Radioactive cesium accumulation in freshwater fishes after the Fukushima nuclear accident

Species Mean ± SD (Bq/kg) between May 2011 and March 2012 (minimum-maximum (Bq/kg)) Mean ± SD (Bq/kg) between April 2012 and March 2013 (minimum-maximum (Bq/kg)) Mean ± SD (Bq/kg) between April 2013 and March 2014 (minimum-maximum (Bq/kg))  
  Total Cs* 134Cs 137Cs Total Cs* 134Cs 137Cs Total Cs* 134Cs 137Cs  
Plecoglossus altivelis 530 ± 822 n/a n/a 60.9 ± 61.0 29.1 ± 25.2 37.9 ± 35.5 50.9 ± 42.3 22.8 ± 12.4 36.6 ± 28.4
(ayu) 7.7-4400    8.5-280 8.4-116 7.58-164 7.9-200 11.8-61.3 7.9-140  
Salvelinus leucomaenis 154 ± 145 n/a n/a 94.2 ± 127 46.3 ± 54.2 59.3 ± 76.1 49.6 ± 75.1 26.2 ± 29.6 36.1 ± 50.4
(white-spotted char) 6.4-590    7.4-840 7.7-350 7.4-490 6.5-600 7.4-194 6.5-403  
Tribolodon hakonensis 207 ± 405 n/a n/a 75.4 ± 103 45.9 ± 46.5 48.3 ± 61.0 48.1 ± 78.1 32.2 ± 33.3 34.8 ± 51.5
(Japanese dace) 11-2500    7.8-420 8.8-171 7.8-253 7.1-390 7.9-126 7.1-261  
Anguilla japonica 129 ± 21 n/a n/a 191 ± 179 74.7 ± 69.8 114 ± 106     
(Japanese eel) 114-143    44-390 16.4-152 27.5-82.3 58-110 21.4-34.9 36.2-78.6  
Carassius langsdorfii 86 ± 40 n/a n/a 94.7 ± 91.7 37.0 ± 38.6 57.3 ± 52.2 94.5 ± 91.0 34.8 ± 30.1 64.3 ± 61.7
(Japanese silver crucian carp) 43-188    24-310 8.6-128 11.2-177 8.9-310 8.9-112 8.9-205  
Carassius cuvieri 29 ± 202 n/a n/a 170 64.1 103     
(Japanese white crucian carp) 88-98       67-120 20.6-38.6 45.9-85.3  
Cyprinus carpio 80 ± 46 n/a n/a 66.9 ± 66.7 31.8 ± 27.8 40.0 ± 39.1 49.3 ± 36.2 22.0 ± 10.3 35.8 ± 24.1
(common carp) 15-155    13-280 9.4-114 9.9-166 9.6-110 7.8-37.7 9.6-76.6  
Micropterus dolomieu 118 ± 130 n/a n/a n/a n/a n/a n/a n/a n/a  
(smallmouth bass) 10.2-330          
Misgurnus anguillicaudatu 49.7 ± 25.6 n/a n/a 9.7 nd nd nd nd nd  
(weather loach) 21.6-83          
Hemibarbus barbus   n/a n/a n/a n/a n/a n/a n/a n/a  
(barbel steed) 83-110          
Oncorhynchus mykiss nd n/a n/a nd nd nd n/a n/a n/a  
(rainbow trout)           
Oncorhynchus nerka 106 ± 42.1 n/a n/a 136 ± 32.2 51.1 ± 15.7 85.5 ± 18.7 112 ± 27.6 34.1 ± 10.8 77.6 ± 17.7
(sockeye salmon) 36-158    89-200 34.2-82 55.2-120 81-170 21.8-55.5 54.4-110  
Oncorhynchus masou 586 ± 2360 n/a n/a 116 ± 199 59.2 ± 92.0 71 ± 117 70 ± 101 35.9 ± 36.1 49.4 ± 68.4
(masu salmon) 6-18700    7.1-1430 8.9-610 7.1-820 6.8-570 7.7-187 6.8-378  
Hypomesus nipponensis 307 ± 167 n/a n/a 48.2 ± 18.2 18.7 ± 6.1 30.2 ± 12.2 32.7 ± 19.2 16.7 ± 6.2 23.6 ± 10.0
(pond smelt) 27-870    9.9-76 8.5-31.8 9.9-46.9 14-76 11.7-28.6 14.4-47.6  
  1. *Total Cs = 134Cs + 137Cs.
  2. Total Cs was available between May 2011 and March 2014.
  3. 134Cs + 137Cs were available between April 2012 and March 2014.
  4. n/a: not applicable.
  5. nd: All samples were below detection limit.