Table 2.

Instantaneous decay rate of PST (d⁻¹), power exponent, and maximum and minimum PST values estimated/observed for detoxification models of PSTs in the clam Ameghinomya antiqua from different patches at Ovalada Island and Low Bay, NW Patagonia. At the southern patch of Ovalada Island, detoxification down to 80 μg STX eq. 100 g⁻¹ was not attainable.

Fishing Ground	Patch	K		g		PSTmax		PSTmin		Detoxification Time (d)
		Mean	SE	Mean	SE	Mean	SE	Mean	SE
Ovalada I.	North	−0.054	0.0069	0.82	0.065	2211	331	74	10.1	316
	South	−0.080	0.0098	0.82	0.065	9610	406	142	14.2	NA
	Overall	−0.067	0.0083	0.82	0.065	5910	368	108	12.2	NA
Low Bay	East	−0.070	0.008	0.82	0.065	490	270	54	11.6	92
	Center	−0.055	0.008	0.82	0.065	513	382	39	11.6	103
	West	−0.040	0.0056	0.82	0.065	432	331	38	8.2	136
	Overall	−0.055	0.0072	0.82	0.065	478	328	44	10.5	110