Small-scale turbulence can reduce parasite infectivity to dinoflagellates

mall-scale turbulence and parasite infection are 2 important factors that govern the dynamics and fate of phytoplankton populations. We experimentally investigated the influence of turbulent mixing on the infectivity of the parasite Parvilucifera sinerae to dinoflagellates. Natural phytoplankton com...

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Detalles Bibliográficos
Autor: Llavería, Gisela
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/321719
Acceso en línea:http://hdl.handle.net/10261/321719
Access Level:acceso abierto
Palabra clave:Medio Marino
dinoflagellates
Centro Oceanográfico de Vigo
Infectivity
Parvilucifera sinerae
Parasite
small-scale turbulence
advection
sinking
buoyancy
environmental factors
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oai_identifier_str oai:digital.csic.es:10261/321719
network_acronym_str ES
network_name_str España
repository_id_str
spelling Small-scale turbulence can reduce parasite infectivity to dinoflagellatesLlavería, GiselaMedio MarinodinoflagellatesCentro Oceanográfico de VigoInfectivityParvilucifera sineraeParasitesmall-scale turbulenceadvectionsinkingbuoyancyenvironmental factorsmall-scale turbulence and parasite infection are 2 important factors that govern the dynamics and fate of phytoplankton populations. We experimentally investigated the influence of turbulent mixing on the infectivity of the parasite Parvilucifera sinerae to dinoflagellates. Natural phytoplankton communities were collected during 3 stages of a bloom event in Arenys de Mar Har- bour (NW Mediterranean). The 15 to 60 μm size fraction was used as the inoculum and distributed into spherical flasks. Half of the recipients were exposed to turbulence while the rest were kept still. In the experiments, the dinoflagellate assemblage was mainly composed of Prorocentrum micans, Scrippsiella trochoidea and Alexandrium minutum. We observed a collapse of A. minutum and S. tro- choidea populations in the unshaken flasks, which coincided with an increase in parasite infectivity. After a short exposure to turbulence, the development of the dinoflagellate populations slowed down and stabilised as expected. In the shaken treatments, the infectivity was lower and the decay in the host cells numbers was delayed compared to the still treatments. The degree of interference of the turbulence with infectivity varied among the experiments, due to differences in cell abundances and possibly their physiological state. Results from a numerical model suggest that turbulence could lead to a 25 to 30% decrease in the maximum infection rate, which could be due to host population disper- sion and/or reduced host–parasite contact times. Turbulence may thus be effective in delaying the initial infection, but not in preventing it.SIGarcés, E. (Esther)Ross, O.N. (Oliver)Figueroa, R.I. (Rosa Isabel)Sampedro, N. (Nagore)Berdalet, E. (Elisa)202320232010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/321719reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Vigoinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3217192026-05-22T06:33:51Z
dc.title.none.fl_str_mv Small-scale turbulence can reduce parasite infectivity to dinoflagellates
title Small-scale turbulence can reduce parasite infectivity to dinoflagellates
spellingShingle Small-scale turbulence can reduce parasite infectivity to dinoflagellates
Llavería, Gisela
Medio Marino
dinoflagellates
Centro Oceanográfico de Vigo
Infectivity
Parvilucifera sinerae
Parasite
small-scale turbulence
advection
sinking
buoyancy
environmental factors
title_short Small-scale turbulence can reduce parasite infectivity to dinoflagellates
title_full Small-scale turbulence can reduce parasite infectivity to dinoflagellates
title_fullStr Small-scale turbulence can reduce parasite infectivity to dinoflagellates
title_full_unstemmed Small-scale turbulence can reduce parasite infectivity to dinoflagellates
title_sort Small-scale turbulence can reduce parasite infectivity to dinoflagellates
dc.creator.none.fl_str_mv Llavería, Gisela
author Llavería, Gisela
author_facet Llavería, Gisela
author_role author
dc.contributor.none.fl_str_mv Garcés, E. (Esther)
Ross, O.N. (Oliver)
Figueroa, R.I. (Rosa Isabel)
Sampedro, N. (Nagore)
Berdalet, E. (Elisa)
dc.subject.none.fl_str_mv Medio Marino
dinoflagellates
Centro Oceanográfico de Vigo
Infectivity
Parvilucifera sinerae
Parasite
small-scale turbulence
advection
sinking
buoyancy
environmental factors
topic Medio Marino
dinoflagellates
Centro Oceanográfico de Vigo
Infectivity
Parvilucifera sinerae
Parasite
small-scale turbulence
advection
sinking
buoyancy
environmental factors
description mall-scale turbulence and parasite infection are 2 important factors that govern the dynamics and fate of phytoplankton populations. We experimentally investigated the influence of turbulent mixing on the infectivity of the parasite Parvilucifera sinerae to dinoflagellates. Natural phytoplankton communities were collected during 3 stages of a bloom event in Arenys de Mar Har- bour (NW Mediterranean). The 15 to 60 μm size fraction was used as the inoculum and distributed into spherical flasks. Half of the recipients were exposed to turbulence while the rest were kept still. In the experiments, the dinoflagellate assemblage was mainly composed of Prorocentrum micans, Scrippsiella trochoidea and Alexandrium minutum. We observed a collapse of A. minutum and S. tro- choidea populations in the unshaken flasks, which coincided with an increase in parasite infectivity. After a short exposure to turbulence, the development of the dinoflagellate populations slowed down and stabilised as expected. In the shaken treatments, the infectivity was lower and the decay in the host cells numbers was delayed compared to the still treatments. The degree of interference of the turbulence with infectivity varied among the experiments, due to differences in cell abundances and possibly their physiological state. Results from a numerical model suggest that turbulence could lead to a 25 to 30% decrease in the maximum infection rate, which could be due to host population disper- sion and/or reduced host–parasite contact times. Turbulence may thus be effective in delaying the initial infection, but not in preventing it.
publishDate 2010
dc.date.none.fl_str_mv 2010
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/321719
url http://hdl.handle.net/10261/321719
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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_ 1869408479128584192
score 15.81155

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