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Effect of aquaculture disinfectants on the germination of Dinophyta cyst


Abstract


En
Cysts of a Dinophyta species collected in a brackish water pond were exposed to different doses of the most common aquaculture disinfectants (formalin, sodium hypochlorite, potassium permanganate, copper sulphate, and organic iodine). Effects of chemicals were evaluated in terms of reduction of the cyst-germination rate. Disinfectant administrations, at the dose usually applied in aquaculture, did not completely inhibit cyst germination. As already demonstrated for other resting stages, common aquaculture treatments are possibly ineffective also against Dinophyta cysts present in breeding systems. Doses of lethal treatments (= doses determining full inhibition of cyst germination) are reported, suggesting a better use of chemicals in order to eradicate from aquaculture systems disturbing organisms.

DOI Code: 10.1285/i15910725v30p129

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