15537089

Source:http://linkedlifedata.com/resource/pubmed/id/15537089

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0002642, umls-concept:C0020792, umls-concept:C0023675, umls-concept:C0678246, umls-concept:C1042374
pubmed:issue	5
pubmed:dateCreated	2004-11-11
pubmed:abstractText	This study was undertaken to assess whether amoebae commonly found in mesohaline environments are in fact stages in the life cycles of Pfiesteria and Pfiesteria-like dinoflagellates. Primary isolations of amoebae and dinoflagellates were made from water and sediment samples from five tributaries of the Chesapeake Bay. Additional amoebae were also cloned from bioassay aquaria where fish mortality was attributed to Pfiesteria. Electron microscopy and small subunit (SSU) rRNA gene sequence analysis of these isolates clearly demonstrated that the commonly depicted amoeboid form of Pfiisteria is very likely a species of Korotnevella and is unrelated to Pfiesteria or Pfiesteria-like dinoflagellates. We have determined that the Pfiesteria and Pfiesteria-like dinoflagellates examined in this study undergo a typical homothallic life cycle without amoeboid stages. Furthermore, we have demonstrated that cloned amoebae sharing morphological characteristics described for stages in the life cycle of Pfiesteria do not transform into dinozoites. The strict clonal isolation and cultivation techniques used in this study substantially support the conclusion that the amoebae and some of the flagellates depicted in the life cycle of Pfiesteria are environmental contaminants of the Pfiesteria culture system and that the Ambush Predator Hypothesis needs to be rigorously reevaluated.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/9306405
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:issn	1066-5234
pubmed:author	pubmed-author:AndersonO RogerOR, pubmed-author:GillevetPatrick MPM, pubmed-author:NeradThomas ATA, pubmed-author:PeglarMichael TMT
pubmed:issnType	Print
pubmed:volume	51
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	542-52
pubmed:dateRevised	2006-11-15
pubmed:meshHeading	pubmed-meshheading:15537089-Animals, pubmed-meshheading:15537089-Dinoflagellida, pubmed-meshheading:15537089-Life Cycle Stages, pubmed-meshheading:15537089-Pfiesteria piscicida, pubmed-meshheading:15537089-Phylogeny
pubmed:articleTitle	Identification of amoebae implicated in the life cycle of Pfiesteria and Pfiesteria-like dinoflagellates.
pubmed:affiliation	George Mason University, Department of Environmental Sciences and Policy, Manassas, Virginia 20110, USA.
pubmed:publicationType	Journal Article, Research Support, U.S. Gov't, Non-P.H.S.