Table 1.

Measured 134Cs, 137Cs, and the naturally occurring radionuclide 40K for post-Fukushima bluefin (PBFT 2011), pre-Fukushima bluefin (PBFT 2008), and post-Fukushima yellowfin tuna (YFT 2011) caught in California waters

Radionuclide concentrations (Bq kg−1)
SL (cm)*Body mass (kg dry)Age (y)134Cs137Cs40K134Cs:137Cs134+137Cs
PBFT 2011 (n = 15)
 Median66.51.51.54.36.03670.6610.6
 Mean66.21.51.54.06.33470.6210.3
 SD3.60.20.11.41.5490.142.9
PBFT 2008 (n = 5)
 Median66.31.51.401.426601.37
 Mean66.21.51.401.425801.11
 SD1.20.090.0500.24300.64
YFT 2011 (n = 5)
 Median72.31.91.201.234201.21
 Mean72.31.91.201.133301.10
 SD2.50.20.0100.47800.35
  • All radionuclide concentrations are in Bq kg−1 dry mass.

  • *Estimated from CFL [PBFT (20) and YFT (21)].

  • Estimated from standard length (SL) (22, 23).

  • Estimated from SL (24, 25).