Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system

9 pages, 6 figures, 1 table

Detalhes bibliográficos
Autores: Guixa-Boixareu, Núria, Vaqué, Dolors, Gasol, Josep M., Pedrós-Alió, Carlos
Formato: artículo
Estado:Versión publicada
Fecha de publicación:1999
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/173717
Acesso em linha:http://hdl.handle.net/10261/173717
Access Level:acceso abierto
Palavra-chave:Virus-like particles (VLP)
Viral impact
Viral decay
Diel cycles
Mediterranean Sea
Oligotrophy
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spelling Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine systemGuixa-Boixareu, NúriaVaqué, DolorsGasol, Josep M.Pedrós-Alió, CarlosVirus-like particles (VLP)Viral impactViral decayDiel cyclesMediterranean SeaOligotrophy9 pages, 6 figures, 1 tableDiel and spatial variability in the concentration of virus-like particles (VLP) was determined in a transect from the coast to offshore in the western Mediterranean (7 stations and 6 depths per station). VLP abundance in coastal waters was on average 1.6 x 107 VLP ml-1, in offshore stations this value was 1.2 x 107 VLP ml-1. At the coastal station there was no variability in VLP abundance, bacterial abundance or chlorophyll a concentration through the water column, while offshore VLP decreased with depth. No clear diel pattern was found in 3 representative stations where diel cycles were studied. Viral impact on the bacterial assemblage was estimated at 2 depths (surface and deep chlorophyll a maximum) of the latter 3 stations using 2 approaches: the percentage of visibly infected bacteria and viral decay rates in cyanide amended cultures. Visibly infected bacteria could not be detected in any sample after counting 300 cells per sample, implying that the percentage of visibly infected bacteria was lower than 0.3%. Using the maximal conversion factor to convert this value to bacterial mortality we found that viruses could be responsible at most for 21.5% of the whole bacterial mortality. We calculated a hypothetical viral decay rate if the maximal possible impact of viruses (21.5%) were true. This value corresponded to 0.02 h-1. However, using the cyanide method to measure viral decay rate, no significant decrease could be detected in a total of 8 viral decay experiments. In conclusion, the percent of total bacterial mortality due to viral lysis in the oligotrophic northwestern Mediterranean was low, certainly much lower than 20%This work was supported by grants AMB 94-1019 and 94-0853 from CICYT, PB91-075 from DGICYT and MAS2-CT93-0063 and MAS3-CT95-0016 grants from the EU. N.G.-B. was supported by an F1 scholarship from the 'Generalitat de Catalunya'Peer ReviewedInter ResearchGeneralitat de CatalunyaEuropean CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201919992019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/173717reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3354/ame019205Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1737172026-05-22T06:33:51Z
dc.title.none.fl_str_mv Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system
title Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system
spellingShingle Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system
Guixa-Boixareu, Núria
Virus-like particles (VLP)
Viral impact
Viral decay
Diel cycles
Mediterranean Sea
Oligotrophy
title_short Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system
title_full Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system
title_fullStr Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system
title_full_unstemmed Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system
title_sort Distribution of viruses and their potential effect on bacterioplankton in an oligotrophic marine system
dc.creator.none.fl_str_mv Guixa-Boixareu, Núria
Vaqué, Dolors
Gasol, Josep M.
Pedrós-Alió, Carlos
author Guixa-Boixareu, Núria
author_facet Guixa-Boixareu, Núria
Vaqué, Dolors
Gasol, Josep M.
Pedrós-Alió, Carlos
author_role author
author2 Vaqué, Dolors
Gasol, Josep M.
Pedrós-Alió, Carlos
author2_role author
author
author
dc.contributor.none.fl_str_mv Generalitat de Catalunya
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Virus-like particles (VLP)
Viral impact
Viral decay
Diel cycles
Mediterranean Sea
Oligotrophy
topic Virus-like particles (VLP)
Viral impact
Viral decay
Diel cycles
Mediterranean Sea
Oligotrophy
description 9 pages, 6 figures, 1 table
publishDate 1999
dc.date.none.fl_str_mv 1999
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/173717
url http://hdl.handle.net/10261/173717
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3354/ame019205
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Inter Research
publisher.none.fl_str_mv Inter Research
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408919022993408
score 15.812455

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