Toxicity of the genus Dinophysis inmariculture of the Guaynuná Bay, Ancash,Peru

Abstract

Dinophysis species causing various proliferations are part of the episodes of toxic microalgae,
which generate a large negative impact on human health, marine ecosystems and related economic
activities. In this paper we present the relationship of the toxicity of gender Dinophysis in mariculture
of Guaynuna bay during 2015, through certain cell concentrations and toxicity testing of organisms
in culture (shellfish). Four species of Dinophysis was determined: D. acuminata, D. caudata, D.
rotundata and D. tripos; positive presence of lipophilic toxins, maximum concentrations during the
summer Dinophysis 400 cells / L, 840 cells / L, 320 cells / L, 480 cells / L and 640 cells / L at five
stations; the average surface temperature reached 21.17 ° C; the average dissolved oxygen ranged
between 10.77 mg / L and 0.27 mg / L in the water column. The study indicates that the area evaluated
maintains low levels of species of the genus Dinophysis possibly to sound environmental
management in mariculture.