The effect of heavy metals on the growth rate of microalgae Heterosigma akashiwo, Alexandrium affine, Prorocentrum foraminosum (dinophyta)

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  • Authors: Zh. V. Markina1, A. V. Ognistaya1,2
  • Affiliations:
    1. National Scientific Center for Marine Biology named after A.V. Zhirmunsky, Far East Branch, Russian Academy of Sciences, Vladivostok, Russian Federation
    2. Far Eastern FederalUniversity, Vladivostok, Russian Federation
  • Keywords: Heterosigma akashiwo, Alexandrium affine, Prorocentrum foraminosum, cadmium, nickel, lead, zinc, iron, heavy metals

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Abstract

The influence of heavy metals cadmium Cd2+, nickel Ni2+ and lead Pb2+ in concentrations of 10 and 20 μg/l, zinc Zn2+, iron Fe3+ – 50 and 100 μg/l on the growth rate of microalgae Heterosigma akashiwo, Alexandrium affine, Prorocentrum foraminosum was studied. The evaluation was carried out on the 3rd and 7th days of the experiment. It was found that the studied heavy metals had an effect on all tested types of algae. The growth rate in H. akashiwo increased with the addition of Cd2+, Pb2+, Zn2+ and Fe3+, and in A. affine - with the addition of all heavy metals. The least resistant to heavy metals was Prorocentrum foraminosum, whose growth rate decreased when exposed to all toxicants.

Keywords: Heterosigma akashiwo, Alexandrium affine, Prorocentrum foraminosum, cadmium, nickel, lead, zinc, iron, heavy metals

Authors

Zh. V. Markina
National Scientific Center for Marine Biology named after A.V. Zhirmunsky, Far East Branch, Russian Academy of Sciences, Vladivostok, Russian Federation
A. V. Ognistaya
National Scientific Center for Marine Biology named after A.V. Zhirmunsky, Far East Branch, Russian Academy of Sciences, Vladivostok, Russian Federation / Far Eastern FederalUniversity, Vladivostok, Russian Federation