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Title

Description, Host-specificity, and Strain Selectivity of the Dinoflagellate Parasite Parvilucifera sinerae sp.nov. (Perkinsozoa)

AuthorsFigueroa, Rosa Isabel ; Garcés, Esther ; Massana, Ramon ; Camp, Jordi
KeywordsDinoflagellates
Parvilucifera
Parasites
Perkinsids
Toxic phytoplankton
Issue Date9-Aug-2008
PublisherElsevier
CitationProtist 159(4): 563-578 (2008)
AbstractA new species of parasite, Parvilucifera sinerae sp. nov., isolated froma bloomof the toxic Dinoflagellate Alexandrium minutum in the harbor of Arenys de Mar (Mediterranean Sea, Spain), is described. This species is morphologically, behaviourally, and genetically (18S rDNA sequence) different from Parvilucifera infectans, until now the only species of the genus Parvilucifera to be genetically analyzed. Sequence análisis of the 18S ribosomal DNA supported P. Sinerae as a new species placed within the Perkinsozoa and close to P. infectans. Data on the seasonal occurrence of P. sinerae, its infective rates in natural and laboratory cultures, and intra-species strain-specific Resistance are presented. Life-cycle studies in field simples showed that the dinoflagellate resting zygote (restingcyst) was resistant to infection, but the mobile zygote (planozygote) orpelli clestage (temporary cyst) became infected. The effects of Light and salinity level son the growth of P. sinerae were examined, and the results showed that low salinity levels promote both sporangial germination and higher rates of infection. Our findings on this newly described parasite point to a complex host—parasite interaction and provide valuable information that leads to a reconsideration of the biological strategy to control dinoflagellate blooms by jeans of intentional parasitic infections
Description17 pages, 7 figures, 2 tables
Publisher version (URL)http://dx.doi.org/10.1016/j.protis.2008.05.003
URIhttp://hdl.handle.net/10261/13803
DOI10.1016/j.protis.2008.05.003
ISSN1434-4610
Appears in Collections:(ICM) Artículos
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