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J Fish Biol. 2014 May;84(5):1607-13. doi: 10.1111/jfb.12368. Epub 2014 Mar 31.

Radiocaesium concentrations in the muscle and eggs of salmonids from Lake Chuzenji, Japan, after the Fukushima fallout.

Author information

1
National Research Institute of Aquaculture, Fisheries Research Agency, Nikko, Tochigi, 321-1661, Japan.

Abstract

Approximately 18 months (September to December 2012) after the Fukushima Dai-ichi Nuclear Power Plant accident, elevated radiocaesium concentrations were measured in samples of muscle and eggs from masu salmon Oncorhynchus masou, kokanee Oncorhynchus nerka, brown trout Salmo trutta and lake trout Salvelinus namaycush from the Lake Chuzenji system, central Honshu Island, Japan (160 km from the station). Mean muscle concentrations were 142·9-249·2 Bq kg⁻¹ wet mass and mean concentrations in eggs were 38·7-79·0 Bq kg⁻¹ wet mass. There was no relationship between fork length and muscle radiocaesium concentration in any of the species, but there were significant relationships between individual muscle and egg radiocaesium concentrations from O. masou, S. trutta and S. namaycush.

KEYWORDS:

brown trout; kokanee; lake trout; masu salmon; nuclear accident

PMID:
24684433
DOI:
10.1111/jfb.12368
[Indexed for MEDLINE]
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