Impact of environmental radiation on the health and reproductive status of fish from Japan, 2017
Lerebours, A., Smith, J.T. (2019). Impact of environmental radiation on the health and reproductive status of fish from Japan, 2017. NERC Environmental Information Data Centre. https://doi.org/10.5285/07347484-5d35-4335-bdbe-ac9d7b33c84f
Data set presents results from fish biometry field work within four lakes in Japan (Suzuuchi, Funazawa, Kashiramori, Abakuma). Data comprise sampling location, fish species, sex, length, weight (total fish, gonad and liver weight). Fish were sampled during May 2017; target species included crucian carp, common carp and smallmouth bass. For the health and reproductive status assessment, fish of similar weight and total length were collected. Gill nets (20 m length and 21 mm mesh size) were employed to ensure capture of homogeneous groups of mature ﬁsh. The work described here was conducted under the TREE project (http://tree.ceh.ac.uk/) funded by the Natural Environment Research Council, Environment Agency and Radioactive Waste Management Ltd.
Fish were carefully removed from the nets and kept alive into tanks containing aerated water. Fish fell unconscious by a blow to the head and were then killed by performing a concussion of the brain to limit as much as possible the suﬀering as recommended by the UK Home Oﬃce procedure (Animals Scientiﬁc Procedures Act, 198618). Scales were sampled for age determination. Body weight, total length, and gonadal weight recorded for each ﬁsh. The gonads were dissected, weighted, fixed in buffered formalin solution for 24h and preserved in ethanol for later study. File uploaded is of the biometry data retrieved from the field work.
copyright Natural Environment Research Council
NERC Environmental Information Data Centre