Responses of Aquatic Organisms to Cyanobacteria and Elodea in Microcosms
| Autor: | A. N. Sharov, S. A. Kurbatova, E. V. Borisovskaya, O. A. Malysheva, Ya. V. Russkikh, N. A. Berezina, N. Yu. Meteleva, V. B. Verbitsky, L. G. Korneva, Ekaterina Chernova, O. S. Makarova, I. Yu. Ershov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Cyanobacteria
Aquatic Organisms Microcystins Harmful Algal Bloom Elodea canadensis Population Hydrocharitaceae Aphanizomenon General Biochemistry Genetics and Molecular Biology 03 medical and health sciences 0302 clinical medicine Botany Animals Amphipoda Asellus aquaticus Microcystis aeruginosa education Ecosystem 0303 health sciences education.field_of_study Multidisciplinary General Immunology and Microbiology biology fungi 030302 biochemistry & molecular biology Aquatic animal General Medicine Elodea biology.organism_classification Bivalvia Daphnia General Agricultural and Biological Sciences 030217 neurology & neurosurgery Isopoda |
| Zdroj: | Doklady Biological Sciences. 488:136-140 |
| ISSN: | 1608-3105 0012-4966 |
| Popis: | The aim of the present study is investigation of the impact of mass development of cyanobacteria and Elodea on population characteristics (abundance, biomass, fecundity) and "health" parameters (the state of embryos, heart rate, and thermal resistance) of aquatic invertebrates in experiments with controlled conditions. In July-August 2018, in four variants of microcosms, the conditions were modeled characteristic of the coastal zone of the Rybinsk Reservoir in the period of mass development of cyanobacteria. Mass species were placed in microcosms of planktonic (with domination (80%) Daphnia longispina) and bottom animals (Unio pictorum, Gmelinoides fasciatus, Asellus aquaticus), as well as Elodea canadensis. In the variants with cyanobacteria, the toxic microcystins LR were revealed (24-53% of the sum of toxins, or from 6.6-66.5 μg/L). The presence of cyanobacteria (Aphanizomenon flos-aquae, Microcystis aeruginosa, and Gloeoitrichia spp.) influenced structural parameters of plankton: the quantity to green algae decreased, small-sized crustaceans increased. Influence of cyanobacteria caused reliable changes in parameters of aquatic animal from those of the control: thermal resitance of mollusks and amphipods decreased, time of restoration of heart rate after loads (salinity test) in mollusks increased; in amphipods, individual fecundity decreased, frequency of abnormalities and of mortality of embryos increased. The presence of Elodea intensified these effects. Thus, mass development of cyanobacteria and Elodea influences ecological-physiological parameters of aquatic animals, decreasing their adaptivity to natural stresses and deteriorating the quality of the progeny. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink