Paralytic shellfish poison present in 5 coastal areas

red tide

Manila, Philippines – Shellfish from five coastal areas tested positive for paralytic shellfish poison, according to the latest laboratory results of the Bureau of Fisheries and Aquatic Resources (BFAR) and local government units.

In a bulletin dated June 25, the BFAR said that shellfish collected from the following areas still have  paralytic shellfish poison that is beyond the regulatory limit:

  • coastal waters of Biliran Province;
  • coastal waters of Leyte in Leyte;
  • Lianga Bay in Surigao del Sur;
  • coastal waters of Dauis and Tagbilaran City in Bohol; and
  • Honda Bay, Puerto Princesa City in Palawan.

Moreover, Puerto Princesa Bay in Puerto Princesa, Palawan is now positive for red tide toxin.

A high concentration of dinoflagellates results in a toxic harmful algal bloom (HAB) known as red tide. Because shellfish such as clams and oysters feed by filtering food particles from water, they can accumulate high levels of the toxin. Ingestion of shellfish from areas with red tide could lead to paralytic shellfish poisoning (PSP).

According to the US Center for Disease Control and Prevention (CDC), PSP could lead to “muscle paralysis and respiratory failure…and in these cases death may occur in 2 to 25 hours.”

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