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A new behavioral endpoint in ecotoxicity testing, burrowing behavior of Chironomus yoshimatsui larvae that survived pre-exposure to 0, 1, 5, and 10mg/L of cadmium for 96h was evaluated in a system composed of clean reconstituted water and sand for 5h, at 30min intervals. The effective time required for 50% of the introduced larvae to burrow (ET50), the proportion of the maximum burrowing rate reached...
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