The freshwater mussel (Anodonta anatina) in monitoring of 2,4,6-trichlorophenol: Behaviour and environmental variation considered

The effects of 2,4,6-trichlorophenol, humic acid and food particles (Selenastrum capricornotum) on the valve movements of Anodonta anatina were studied under laboratory conditions using a factorial experimental design. None of the treatments affected the average valve openness or the number of valve movements. 2,4,6-TCP affected the short-term variability of the valve openness, but in a way depending on the presence of humic acid and food particles. Humic acid increased the accumulation of 2,4,6-TCP, while the presence of food particles and the valve openness had no effect.