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10-23-2008, 09:47 AM #31
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10-23-2008, 11:25 AM #32
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12-25-2008, 09:57 PM #33
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12-25-2008, 10:01 PM #34
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12-25-2008, 10:05 PM #35
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12-25-2008, 10:37 PM #36
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12-25-2008, 11:31 PM #37
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12-25-2008, 11:33 PM #38
Actually environmental contamination still allows for the predatory fishes to have higher concentration, by the same logic. Both are getting contaminated by the water surrounding their bodies - but the larger fish are getting extra by eating the smaller fish. It will slowly leech out (back to an equilibrium with the surrounding toxicity), but generally not at the rate that it enters.
I remember being relevant.
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12-25-2008, 11:42 PM #39
wouldn't smaller fishes have a more dense circulation (thus, high concent) compared to larger fishes due to their size? even though larger fishes are eating smaller fishes, toxins would be diluted in their much bigger circulatory system (dilution on a small fish on a dilution on a larger fish (.5 for larger fishes x .8 for small fishes) = more dilution (.4 overall))..
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> 99% of supplements are a scam.
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12-25-2008, 11:59 PM #40
They have a smaller amount circulation, but I'd think that their concentration levels (say 10ppm) would edge towards the concentrations of the surrounding water (say again, 10ppm). But for each fish, there is still an amount of associable contamination (grams). The two concentrations don't multiply, because the contaminants are being added into the mass as they are ingested; the two fish don't 'combine.' (well, they get eaten... but different story).
If each small fish had 10mcg of mercury per, and a large fish ate 10 small fish a day, they would be adding 100mcg mercury per day. I'm just making those numbers up though - I don't know the actual contamination concentrations.
So from your example of .5 and .8, that's the concentration - from each of those, you should be able to derive the mass of contamination, and those masses add together - so by eating the smaller fish, the total contamination level raised. Eat more smaller fish, get more contamination; that's the premise of why higher order animals tend to have higher levels of contaminants (such as mercury).
EDIT: If that didn't make any sense, that's because it's midnight for meLast edited by TinyMan; 12-26-2008 at 12:03 AM.
I remember being relevant.
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12-26-2008, 12:16 AM #41
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12-26-2008, 12:20 AM #42
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12-26-2008, 12:26 AM #43
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12-26-2008, 01:11 AM #44
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12-26-2008, 01:45 AM #45
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12-26-2008, 02:31 AM #46
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12-26-2008, 05:00 AM #47
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