Web of Science: 7 cites, Scopus: 8 cites, Google Scholar: cites,
Some mixotrophic flagellate species selectively graze on Archaea
Ballen-Segura, Miguel (Centre d'Estudis Avançats de Blanes)
Felip, Marisol (Centre de Recerca Ecològica i Aplicacions Forestals)
Catalan, Jordi (Centre de Recerca Ecològica i Aplicacions Forestals)

Data: 2017
Resum: Many phototrophic flagellates ingest prokaryotes. This mixotrophic trait becomes a critical aspect of the microbial loop in planktonic food webs because of the typical high abundance of these flagellates. Our knowledge of their selective feeding upon different groups of prokaryotes, particularly under field conditions, is still quite limited. In this study, we investigated the feeding behavior of three species (Rhodomonas sp. , Cryptomonas ovata, and Dinobryon cylindricum) via their food vacuole content in field populations of a high mountain lake. We used the catalyzed reporter deposition-fluorescence in situ hybridization (CARD-FISH) protocol with probes specific for the domain Archaea and three groups of Eubacteria: Betaproteobacteria, Actinobacteria, and Cytophaga-Flavobacteria of Bacteroidetes. Our results provide field evidence that contrasting selective feeding exists between coexisting mixotrophic flagellates under the same environmental conditions and that some prokaryotic groups may be preferentially impacted by phagotrophic pressure in aquatic microbial food webs. In our study, Archaea were the preferred prey, chiefly in the case of Rhodomonas sp. , which rarely fed on any other prokaryotic group. In general, prey selection did not relate to prey size among the grazed groups. However, Actinobacteria, which were clearly avoided, mostly showed a size of <0. 5 μm, markedly smaller than cells from the other groups.
Nota: Altres ajuts: Spanish Ministry of the Environment project EGALA (OAPN-124/2010)
Nota: Número d'acord de subvenció MEC/CGL2007-64177/BO
Nota: Número d'acord de subvenció AGAUR/2014/SGR-1249
Drets: Tots els drets reservats
Llengua: Anglès.
Document: article ; recerca ; acceptedVersion
Matèria: Archaea ; Mixotrophic protist ; Selective feeding
Publicat a: Applied and environmental microbiology, Vol. 83, issue 2 (Jan. 2017) , e02317-e02318, ISSN 0099-2240

DOI: 10.1128/AEM.02317-16
PMID: 27815273


Post-print. Article
31 p, 889.3 KB

Post-print. Material addicional
1 p, 115.8 KB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2017-09-06, darrera modificació el 2019-04-08



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