US EPA

7449317 

Journal Article 

Accumulation of hepatotoxic microcystins in freshwater mussels, aquatic insect larvae and oligochaetes in a large, shallow eutrophic lake (Lake Chaohu) of subtropical China 

Chen, Jun; Xie, P 

2008 

1 

Fresenius Environmental Bulletin
ISSN: 1018-4619
EISSN: 1610-2304 

17 

7A 

849-854 

English 

WOS:000258498700012 

https://www.proquest.com/scholarly-journals/accumulation-hepatotoxic-microcystins-freshwater/docview/19578660/se-2?accountid=171501
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This paper studied the seasonal changes of two common microcystins (MCs), MC-RR and -LR, in the commercially important mussel Corbicula fluminea in Lake Chaohu, where there occurred dense cyanobacteria. Occasional measurements were also made for MC in the mussel Arconaia lanceolat, the oligochaete Limnodilus hoffineisteri and the insect larva Chironomus sp. Mean MC of C. fluminea was much higher in hepatopancreas than in intestine and foot. Our study is the first to report accumulation of MCs in oligochaetes and aquatic insect larvae. The high contents of MCs in the insect larvae suggest a great possibility for the transfer of MCs to benthos-feeding omnivores like common carp. According to the provisional standard by the WHO, 28.6 % of the collected C. fluminea were harmful for human consumption, assuming a daily consumption of 300 g by a person. It is recommended that edible mussels should not be collected for human consumption during toxic cyanobacterial blooms in Lake Chaohu. © by PSP 2008. 

microcystin-RR and -LR; edible mussel; organ and inter-specific patterns; oligochaetes; aquatic insect larvae; Lake Chaohu