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. 2010 Sep 10;5(9):e12576. doi: 10.1371/journal.pone.0012576

Table 3. Microcystin LR concentrations (ppb wet weight) in marine invertebrate gastrointestinal tissues collected from Tank 3 (high microcystin exposure tank) at various time intervals post-exposure1.

Invertebrate Spp.2 24 Hour 48 Hour 72 Hour 7 Days 14 Days 21 Days
Manila clam 1,324 110 125 295 183 nd3
Mussel 979 3.13 14.3 45 64.4 30.5
Oyster 102 373 68.3 158 122 4
Dungeness crab nd nd 1.01 2.7 --- ---
Red rock crab nd nd nd nd nd nd
Tegula snail --- --- 170 175 --- ---
Seawater in tank5 12.4 4.6 6.1 nd nd nd
1

All tanks were flushed continually with clean seawater beginning at 96 H post-exposure.

2

n = 1 or 2 pooled invertebrates of each species at each sample point, except snails, where n = 7.

3

nd  =  microcystin concentration was below minimum detection limits on liquid chromatography-tandem mass spectrophotometry.

4

---  =  not tested.

5

Average microcystin-LR concentration across the top, middle and bottom of Tank 3 at each time point.