Cyanobacteria and microcystin in river waters intended to industrial park supply in Caruaru-PE, Brazil
DOI:
https://doi.org/10.3395/2317-269x.00602Keywords:
Cyanobacteria, Water, Microcystin, HPLC, IpojucaAbstract
Cyanotoxin producing Cyanobacteria can cause serious harm to human and animal health. Microcystins, the most common type of cyanotoxins, promote liver tumors in men. Thus, we aimed at verifying the occurrence of cyanobacteria in water samples from the Ipojuca’s river at the perimeter of Caruaru-PE, Brazil, and determining if the toxin was also present. Water samples were collected at five strategic points over thirteen consecutive months. High Performance Liquid Chromatography (HPLC) was used to obtain microcystins. The Utermöhl sedimentation method was used to identify and quantify species. This approach found that the toxin was present in 100% of the samples, and pointed to three genera of microcystin producers. The river provides the one of the source for public water supply in the region, confirming the relevance of continuous monitoring of cyanobacteria and cyanotoxins. As observed in the Ipojuca river, several water sources at Pernambuco also present recurrent cyanobacterial blooms, which may contain toxin producers. The blooms occur mainly in the dry season, when water is an invaluable commodity for humans and life stock. Finally, this study showed the importance of monitoring microcystin to support preventive actions in environmental and public health surveillance.Downloads
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