Effects of small-scale turbulence on dinoflagellate ecophysiology

Memoria presentada por Gisela Llavería para obtener el título de Doctora por la Universidad de la Universitat Politècnica de Catalunya (UPC), realizada bajo la dirección de Dra. Elisa Berdalet del Institut de Ciències del Mar (ICM-CSIC).-- Tesis defendida en Barcelona el 20 de Noviembre de 2009. Exc...

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Detalles Bibliográficos
Autor: Llaveria, Gisela
Tipo de recurso: tesis doctoral
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/40987
Acceso en línea:http://hdl.handle.net/10261/40987
Access Level:acceso abierto
Palabra clave:Dinoflagellates
Small-scale turbulence
Alexandrium minutum
Alexandrium catenella
PSP toxins
Ecdysal cysts
DMSP
Dinomitosis
Parvilucifera sinerae
PSP
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spelling Effects of small-scale turbulence on dinoflagellate ecophysiologyLlaveria, GiselaDinoflagellatesSmall-scale turbulenceAlexandrium minutumAlexandrium catenellaPSP toxinsEcdysal cystsDMSPDinomitosisParvilucifera sineraePSPMemoria presentada por Gisela Llavería para obtener el título de Doctora por la Universidad de la Universitat Politècnica de Catalunya (UPC), realizada bajo la dirección de Dra. Elisa Berdalet del Institut de Ciències del Mar (ICM-CSIC).-- Tesis defendida en Barcelona el 20 de Noviembre de 2009. Excelente cum laude por unanimidad. Los capítulos de la tesi 1, 4, 5 y 6 han sido publicados como artículos científicos en revistas del SCI entre los años 2007 y 2011Dinoflagellate proliferations seem to be often related to certain stability of the water column. Laboratory experiments have shown that small-scale turbulence can diminish the net growth rate and inhibit cell division, and simultaneously increase the cell size and the DNA and RNA content. The objective of this PhD Thesis was to explore direct effects of small-scale turbulence on physiological processes related to the cell and life cycles of dinoflagellates, and to investigate the underlying mechanisms in the observed responses. The gained knowledge should provide a better understanding of the development of their proliferations. The cell cycle of the dinoflagellate Alexandrium minutum was transiently arrested in the G2/M phase. It was explored whether such interference was due to an eventual alteration, due to turbulence, of the microtubular system implicated in the dinomitosis, whether ryanodine receptors were involved in the mechanotransduction pathway activated by this stimulus, and also whether a possible differential gene expression occurred under turbulence. Toxins and DMSP concentrations, the proportion of ecdysal cyst and the endoparasite Parvilucifera sinerae infection on dinoflagellates were also modulated by turbulence. Namely, infectivity decreased under shaking, and likely, asexual encystment did not constitute a preventive mechanism to infection. The suitability of some experimental systems for turbulence generation was also considerate. The orbital shaker is the most appropriate setup to carry out physiological studies on dinoflagellates, since the whole culture is exposed to turbulence, and cells cannot escape it. The present Thesis concludes that dinoflagellates prefer calm water column situations, since their physiology is sensitive to intense mixingSpanish projects: TURFI (REN2002-01591/MAR), TURDITOX (CTM2005-03547/MAR), TURECOTOX (CTM2006-13884-C02-00/MAR) VARITEC (CTM2004-04442-C02). G. Llaveria fue becaria FPU del MICINN (2004-2008)Universidad Politécnica de CataluñaCSIC - Instituto de Ciencias del Mar (ICM)201120112009info:eu-repo/semantics/doctoralThesishttp://purl.org/coar/resource_type/c_db06http://hdl.handle.net/10261/40987reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/409872026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effects of small-scale turbulence on dinoflagellate ecophysiology
title Effects of small-scale turbulence on dinoflagellate ecophysiology
spellingShingle Effects of small-scale turbulence on dinoflagellate ecophysiology
Llaveria, Gisela
Dinoflagellates
Small-scale turbulence
Alexandrium minutum
Alexandrium catenella
PSP toxins
Ecdysal cysts
DMSP
Dinomitosis
Parvilucifera sinerae
PSP
title_short Effects of small-scale turbulence on dinoflagellate ecophysiology
title_full Effects of small-scale turbulence on dinoflagellate ecophysiology
title_fullStr Effects of small-scale turbulence on dinoflagellate ecophysiology
title_full_unstemmed Effects of small-scale turbulence on dinoflagellate ecophysiology
title_sort Effects of small-scale turbulence on dinoflagellate ecophysiology
dc.creator.none.fl_str_mv Llaveria, Gisela
author Llaveria, Gisela
author_facet Llaveria, Gisela
author_role author
dc.subject.none.fl_str_mv Dinoflagellates
Small-scale turbulence
Alexandrium minutum
Alexandrium catenella
PSP toxins
Ecdysal cysts
DMSP
Dinomitosis
Parvilucifera sinerae
PSP
topic Dinoflagellates
Small-scale turbulence
Alexandrium minutum
Alexandrium catenella
PSP toxins
Ecdysal cysts
DMSP
Dinomitosis
Parvilucifera sinerae
PSP
description Memoria presentada por Gisela Llavería para obtener el título de Doctora por la Universidad de la Universitat Politècnica de Catalunya (UPC), realizada bajo la dirección de Dra. Elisa Berdalet del Institut de Ciències del Mar (ICM-CSIC).-- Tesis defendida en Barcelona el 20 de Noviembre de 2009. Excelente cum laude por unanimidad. Los capítulos de la tesi 1, 4, 5 y 6 han sido publicados como artículos científicos en revistas del SCI entre los años 2007 y 2011
publishDate 2009
dc.date.none.fl_str_mv 2009
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
http://purl.org/coar/resource_type/c_db06
format doctoralThesis
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/40987
url http://hdl.handle.net/10261/40987
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidad Politécnica de Cataluña
CSIC - Instituto de Ciencias del Mar (ICM)
publisher.none.fl_str_mv Universidad Politécnica de Cataluña
CSIC - Instituto de Ciencias del Mar (ICM)
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_ 1869419474976768000
score 15,81155

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