The serene waters of our oceans, often viewed as a source of life and nourishment, can harbor hidden dangers. A recent discovery in the Philippines has highlighted a significant concern: the presence of amnesia-causing algae in seafood.
The Culprit: Amnesic Shellfish Poisoning (ASP)
ASP is a serious illness caused by consuming seafood contaminated with domoic acid, a neurotoxin produced by certain harmful algae, particularly diatoms. These microscopic organisms, while essential to marine ecosystems, can become toxic under specific environmental conditions.
The Philippine Threat
Researchers have identified two harmful diatom species, Pseudo-nitzschia pungens and P. brasiliana, in shellfish farms in Luzon, Philippines. These diatoms can produce domoic acid, which accumulates in shellfish and other seafood, posing severe health risks.
The Impact on Human Health
Domoic acid exposure can cause a range of symptoms, from gastrointestinal distress to neurological issues like confusion and memory loss. In severe cases, it can lead to death. Long-term exposure may result in permanent cognitive impairment.
“It is important to be aware of the toxic potential of these diatoms and to monitor them accordingly. Such efforts must begin by establishing their presence in our waters. To our knowledge, the molecular taxonomy of Pseudo-nitzschia in the Philippines is virtually nonexistent,” say researchers Lorenzo A. Botavara, Janice A. Ragaza, Hong Chang Lim, and Sing Tung Teng.
Protecting Against the Danger
Harmful algal blooms, exacerbated by climate change and pollution, are increasing seafood contamination risks. Regular monitoring, enforcing strict food safety standards, and raising public awareness are essential to safeguarding communities from this silent threat.
