Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Life-history strategies in zooplankton promote coexistence of competitors in extreme environments with high metal content |
| Abstract | The toxicity of pollutants on aquatic communities is determined by the specific sensitivities and by the ecological relationships between species, although the role of ecological interactions on the specific sensitivity to pollutants is complex. We tested the effect of exposure to copper on the life-history strategies of two coexisting rotifer species of the genus Brachionus from Inca-Coya lagoon, an isolated water body located in Atacama Desert. The experiments looked at differences in the response to the stress by chemical pollution mimicking field conditions of copper exposure, levels of food, and salinity, between single-species cultures and coexisting species. Under single species cultures, B. 'Nevada' had lower densities, growth rates, and resting eggs production than B. quadridentatus; when in competition, B. 'Nevada' performed better than B. quadridentatus in most life-history traits. B. 'Nevada' was a copper-tolerant species, which outcompeted B. quadridentatus, more copper-sensitive, with higher levels of copper. Species-specific responses to environmental conditions and pollution, plus differential relationships between population density and production of resting eggs, resulted in reduced niche overlap between species, allowing stabilized coexistence. The extreme environmental conditions and the isolation of the Inca-Coya lagoon, make it an excellent model to understand the adaption of aquatic organisms to stressed environments. |
| Source | Scientific reports (Nature Publishing Group) 8 (11060) |
| Keywords | rotifera |
| Journal | Scientific reports (Nature Publishing Group) |
| Editor | Nature Publishing Group, London, Regno Unito |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1038/s41598-018-29487-3 |
| Authors | Adriana Aránguiz-Acuña; Pablo Pérez-Portilla; Ana De la Fuente; Diego Fontaneto |
| Text | 389566 2018 10.1038/s41598 018 29487 3 rotifera Life history strategies in zooplankton promote coexistence of competitors in extreme environments with high metal content Adriana Aranguiz Acuña; Pablo Perez Portilla; Ana De la Fuente; Diego Fontaneto Universidad Catolica del Norte, Angamos 0610, Antofagasta, Chile; CNR ISE Verbania The toxicity of pollutants on aquatic communities is determined by the specific sensitivities and by the ecological relationships between species, although the role of ecological interactions on the specific sensitivity to pollutants is complex. We tested the effect of exposure to copper on the life history strategies of two coexisting rotifer species of the genus Brachionus from Inca Coya lagoon, an isolated water body located in Atacama Desert. The experiments looked at differences in the response to the stress by chemical pollution mimicking field conditions of copper exposure, levels of food, and salinity, between single species cultures and coexisting species. Under single species cultures, B. Nevada had lower densities, growth rates, and resting eggs production than B. quadridentatus; when in competition, B. Nevada performed better than B. quadridentatus in most life history traits. B. Nevada was a copper tolerant species, which outcompeted B. quadridentatus, more copper sensitive, with higher levels of copper. Species specific responses to environmental conditions and pollution, plus differential relationships between population density and production of resting eggs, resulted in reduced niche overlap between species, allowing stabilized coexistence. The extreme environmental conditions and the isolation of the Inca Coya lagoon, make it an excellent model to understand the adaption of aquatic organisms to stressed environments. 8 Published version https //www.nature.com/articles/s41598 018 29487 3 sr 2018_SciRep_Aranguiz et al.pdf Articolo in rivista Nature Publishing Group 2045 2322 Scientific reports Nature Publishing Group Scientific reports Nature Publishing Group Scientific reports Nature Publishing Group diego.fontaneto FONTANETO DIEGO |