First report of harmful algal bloom caused by the dinoflagellate Heterocapsa sp. along the shores of Camaná, 2023
DOI:
https://doi.org/10.53554/boletin.v39i1.411Keywords:
Heterocapasa, Harmful algal bloom, Camaná, Arequipa, PeruAbstract
During the first fortnight of February 2023, in the province of Camaná-Arequipa, the first occurrence of harmful algal bloom caused by the dinoflagellate Heterocapsa sp. was documented. This microalga produces surfactant substances on the sea surface. When the organism disintegrates, it releases a toxin carried by waves and winds to the shore, causing irritation to the skin, respiratory system, and eyes of beachgoers. The average cell density reached 18.27 x 105 cells. L-1. In the initial two days of the algal bloom, the average oceanographic parameters recorded were: sea surface temperature 20.4 °C, salinity
34.705, dissolved oxygen 3.40 mL/L, and pH 7.80. The proliferation of harmful algal bloom was attributed to an upsurge in radiation, variable winds, and an augmented inflow of continental water laden with nutrients.
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