Establishment of an optimal fish species for research monitoring in YRD region
Various species of fish is commonly used within Europe and North America to monitor chemical status and long term changes in the environment. It can give information of the bio-available proportion of discharged environmental contaminants and can also help in human risk assessment since fish is used for human consumption.
Objectives and specific aims
In the short term, find out 1-2 fish indicator species. In China, fish farming is common and collection of escaped or hybridized specimens should be avoided to get representative samples of the surrounding environment rather than the food and possible pharmaceuticals used at fish farms. Other factors to be considered is: abundance and distribution in China, trophic level and the food chain, tolerance to various environmental stressors and practical matters as permits and easiness to collect.
Suggested species: Crucian carp (Carassius auratus), common carp (Cyprinus carpio), black carp (Mylopharyngodon piceus), white fish (Culter alburnus), snakehead carp (Ophiocephalus argus), yellow head catfish (Pelteobagrus fulvidraco)
In the long term, the objective is to establish a fish based research monitoring program in YRD region.
Sampling of fish has so far been conducted in Dianshan lake from 2011-2014 and Tai lake from 2012-2014. Ten species and more than 400 individuals have been collected.
In the analyzed samples, PCBs, OCPs, CPs, PBDEs, HBCDD and heavy metals have been detected.
Research team: Anders Bignert, Daqiang Yin, Lillemor Asplund, Yihui Zhou, Ge Yin, Anna Strid, Sara Danielsson, Yanling Qiu, Qianfen Xiao, Yajie Sun and Elisabeth Nyberg.