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Título: | Caveats on the use of rotenone to estimate mixotrophic grazing in the oceans [Dataset] |
Autor: | Duarte Ferreira, Guilherme CSIC ORCID ; Calbet, Albert CSIC ORCID | Palabras clave: | Rotenone Protist Mixoplankton Growth phase Grazing Growth Dilution technique |
Fecha de publicación: | 3-mar-2020 | Editor: | CSIC - Instituto de Ciencias del Mar (ICM) | Citación: | Duarte Ferreira, Guilherme; Calbet, Albert; 2020; Caveats on the use of rotenone to estimate mixotrophic grazing in the oceans [Dataset]; DIGITAL.CSIC; https://doi.org/10.20350/digitalCSIC/14482; http://hdl.handle.net/10261/257586 | Resumen: | Phagotrophic mixotrophs (mixoplankton) are now widely recognised as important members of food webs, but their role in the functioning of food webs is not yet fully understood. This is because of the lack of a well-established technique to estimate mixotrophy. An immediate step in this direction would be the development of a method that separates mixotrophic from heterotrophic grazing that can be routinely incorporated into the common techniques used to measure microplankton herbivory (e.g., the dilution technique). This idea was explored by the addition of rotenone, an inhibitor of the respiratory electron chain that has been widely used to selectively eliminate metazoans, both in the field and in the laboratory. Accordingly, rotenone was added to auto-, mixo-, and heterotrophic protist cultures in increasing concentrations (ca. 24 h). The results showed that mixotrophs survived better than heterotrophs at low concentrations of rotenone. Nevertheless, their predation was more affected, rendering rotenone unusable as a heterotrophic grazing deterrent. Additionally, it was found that rotenone had a differential effect depending on the growth phase of an autotrophic culture. Altogether, these results suggest that previous uses of rotenone in the field may have disrupted the planktonic food web | URI: | http://hdl.handle.net/10261/257586 | DOI: | 10.20350/digitalCSIC/14482 |
Aparece en las colecciones: | (ICM) Conjuntos de datos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Rotenone_Resume_final.xlsx | Experimental data | 246,65 kB | Microsoft Excel XML | Visualizar/Abrir |
Growth.JNB | Experimental data - Growth rates | 600,5 kB | SigmaPlot version 14.0 | Visualizar/Abrir |
Ingestion.JNB | Experimental data - Grazing rates | 454 kB | SigmaPlot version 14.0 | Visualizar/Abrir |
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