Exposé
Impacts of harmful algal blooms on the aquaculture industry: Chile as a case study
Díaz, Patricio A.; Álvarez, Gonzalo; Varela, Daniel; Pérez-Santos, Iván; Díaz, Manuel; Molinet, Carlos; Seguel, Miriam; Aguilera-Belmonte, Alejandra; Guzmán, Leonardo; Uribe, Eduardo; Rengel, José; Hernández, Cristina; Segura, Cristian; Figueroa, Rosa I.
Perspectives in Phycology Vol. 6 No. 1-2 (2019), p. 39 - 50
publié: Jul 1, 2019
publication en ligne: Feb 19, 2019
manuscrit accepté: Jan 9, 2019
révision final du manuscrit reçu: Jun 15, 2018
révision du manuscrit demandée: Jan 29, 2018
manuscrit reçu: Dec 1, 2017
Open Access (article peut être télechargé gratuitement)
Abstract
Harmful algal blooms (HABs) of toxin-producing microalgae, mainly Alexandrium catenella, Dinophysis spp., and Pseudo-nitzschia australis, cause the severe illnesses referred to as paralytic, diarrheic, and amnesic shellfish poisoning. They therefore threaten the sustainable exploitation of bivalves, including in northern and southern Chile, sites of intensive shellfish aquaculture but also recurrent HABs. Exceptionally large blooms of the genera Pseudochattonella and Karenia recently occurred in the Patagonian fjords, leading to high fish mortalities (up to 40 000 t) and thus to very negative impacts on the salmon farming industry. The resulting economic losses were estimated to be US$800M. Here we examine past, present, and possible future trends of the main HAB-causative species in Chile, with the objective of improving risk assessments of shellfish poisoning and other hazardous events in the region and elsewhere.
Mots-clefs
HAB-causing species • Shellfish aquaculture • Socio-economic impacts • PSP outbreaks • ASP outbreaks • DSP outbreaks • Chile