Publication details

Occurrence of antiparasitic pesticides in sediments near salmon farms in the northern Chilean Patagonia


TUCCA Felipe MOYA Heriberto POZO Karla Andrea BORGHINI Francesca FOCARDI Silvano BARRA Ricardo

Year of publication 2017
Type Article in Periodical
MU Faculty or unit

Faculty of Science

Keywords Pesticides; Aquaculture; Patagonia; Sediment
Description Growth of the aquaculture industry has triggered the need for research into the potential environmental impact of chemicals used by salmon farms to control diseases. In this study, the antiparasitic pesticides emamectin benzoate (EB), diflubenzuron (DI), teflubenzuron (TE), and cypermethrin (CP) were measured in sediments near salmon cages in southern Chile. Concentrations for EB were between 2.2 and 14.6 ng g(-1), while the benzoylphenyl ureas DI and TE were detected in the ranges of 0.1 to 12 ng g(-1) and 0.8 to 123.3 ng g(-1), respectively. These results were similar to data reported for the Northern Hemisphere. On the other hand, the pyrethroid CP was detected in higher concentrations, ranging from 18.0 to 1323.7 ng g(-1). According to reported toxicity data, this range represents a potential risk for benthic invertebrates. This report is the first baseline attempt at assessing antiparasitic pesticide levels in the Chilean Patagonia.
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