ProMED-mail
<promed@promedmail.org>
"The California Department of Fish and Game has blamed the die-off on oxygen deprivation and is also testing fish for toxins at its animal forensics laboratory. Results are not expected until next week."
It will be interesting to see if the tests reveal any domoic acid in the sardines.
If the tests reveal domoic acid, then it may be that the sardines have unexpectedly been a sentinel animal for this, foreshadowing the death of birds known to eat these fish.
Appropriately this incredible amount of dead fish is being hauled off, as it is probable that as they decompose they would collect maggots which are also delicacies for birds. The birds may then be exposed to botulism for the rotting fish that accumulate in the maggots or possibly from domoic acid in the maggots.
But at a compost site it is likely that they will not be exposed in such a fashion, thus preventing this scenario.
Domoic acid, an acidic cyanotoxin, a neurotoxic tricarboxylic amino acid structurally related to kainic and glutamic acids, associated with certain algal blooms and possibly produced by the diatom Pseudo-nitzschia is also called amnesic shellfish poison (ASP).
The interactive HealthMap/ProMED map for Redondo Beach, California, is available at:
<http://healthmap.org/r/0Ahi> - CopyEd.EJP]
[see also:
2010
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Domoic acid, sea lion deaths - USA: (CA) 20100620.2064
2007
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Domoic acid, animal deaths - USA (CA) 20070428.1384
2005
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Sea lions, domoic acid - USA (CA) 20050616.1692
2004
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Dolphin die-off - USA (FL)(04): domoic acid 20040617.1615 Otter deaths, domoic acid - (CA): not (06) 20040615.1607 Otter deaths, domoic acid - USA (CA): not (05) 20040528.1450 Otter deaths, domoic acid - USA (CA): not (04) 20040526.1425 Otter deaths, domoic acid - USA (CA): not (03) 20040525.1397 Otter deaths, domoic acid - USA (CA): not 20040523.1382 Otter deaths, domoic acid - USA (CA): susp. 20040417.1071 Dolphin die-off - USA (FL)(03): Domoic acid 20040323.0806
2003
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Whale die-off, domoic acid - USA (East Coast): susp. 20031028.2684 Dolphin, sea lion die-off, domoic acid - USA (CA) 20030604.1363 Domoic acid, razor clams - USA (OREGON) 20030508.1142
2002
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Flying squid, domoic acid - USA (California) 20021209.6025 Mammal, bird die-off, domoic acid - USA (CA) 20020708.4702 Mammal, bird die-off, domoic acid - USA (CA) 20020526.4323 Dolphin/sea lion die-off, domoic acid - USA (CA) (02) 20020426.4035 Dolphin/sea lion die-off, domoic acid - USA (CA) 20020422.4011 Shellfish ban, domoic acid - Canada (NB) 20020422.4010] .................................................sb/tg/ejp/dk/ll
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