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Spatial and temporal distributions of PSP toxicity (μg STX eq. 100 g−1) in the clam Ameghinomya antiqua recorded at two Instituto de Fomento Pesquero (IFOP) sampling stations (Ovalada Island and Low Bay) during a monthly monitoring program carried out in the Aysén region (southern Chile) from January to December 2009. The green segmented line denotes the threshold of 80 μg STX eq. 100 g−1.
