Throughout the world observations of several algal species producing toxins are being reported with increasing frequency. Often, these events are accompanied by severe impacts to aquatic life, local economies, and public health. Their presence and persistence represent a significant and expanding threat to aquatic life and human health. Some of these toxins have direct and deleterious effects on local plants and animals: others have indirect affects on organisms by changing local environmental conditions. Symptoms of exposure to these toxins include gastrointestinal, neurological. cardiovascular, and hepatological symptoms. The algae that produce these toxins, and the specific symptoms they cause, are summarízed here. A significant proportion of algae and cyanobacteria produce such potent toxins. If water containing high concentrations of toxic algae and cyanobacteria or their toxins is ingested (in drinking water or accidentally during recreation), they pose potential threat to human health. In discussing the problems arising from phycotoxins a fatalistic attitude is commonly adopted in which it is stated that the toxins will always be with us and that the simplest and most successful course would be to learn how to manage around the toxins.
Phycotoxin-a threat to aquatic life and human health
North Orissa University Journal Of Science and Technology, Volume 3 & 4, ISSN Number:2319-5142, 62-73
Publish: 15/12/2015
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