Abstract：
:Protistan parasites have an undisputed global health impact. However, outside of a few key exceptions, e.g. the agent of malaria, most of these infectious agents are neglected as important health threats. The Symposium entitled "Free-living amoebae and neglected pathogenic protozoa: health emergency signals?" held at the European Congress of Protistology in Rome, July 2019, brought together researchers addressing scientific and clinical questions about some of these fascinating organisms. Topics presented included the molecular basis of pathogenicity in Acanthamoeba; genomics of Naegleria fowleri; and epidemiology of poorly diagnosed enteric protistan species, including Giardia, Cryptosporidium, Blastocystis, Dientamoeba. The Symposium aim was to excite the audience about the opportunities and challenges of research in these underexplored organisms and to underline the public health implications of currently under-appreciated protistan infections. The major take home message is that any knowledge that we gain about these organisms will allow us to better address them, in terms of monitoring and treatment, as sources of future health emergencies.
journal_name
Eur J Protistoljournal_title
European journal of protistologyauthors
Angelici MC,Walochnik J,Calderaro A,Saxinger L,Dacks JBdoi
10.1016/j.ejop.2020.125760subject
Has Abstractpub_date
2020-11-28 00:00:00pages
125760eissn
0932-4739issn
1618-0429pii
S0932-4739(20)30090-0journal_volume
77pub_type
杂志文章abstract：:The cortical morphogenesis of Amphisiella australis Blatterer and Foissner, 1988 was investigated using protargol impregnation. In 43% of the examined cells the morphogenesis starts with a dedifferentiation of the two transverse cirri forming the oral primordium. In the other specimens the oral primordium either origi...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80004-0
更新日期：1992-11-20 00:00:00
abstract：:The route of infection of two endonucleobiotic bacteria in Paramecium caudatum was investigated with the electron microscope. The bacterium Holospora elegans specifically infects the micronucleus, whereas Holospora obtusa infects the macronucleus. The infectious forms of both bacteria are ingested by the prospective h...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(89)80037-9
更新日期：1989-02-24 00:00:00
abstract：:The morphology, infraciliature and silverline system of Trachelocerca trepida Kahl, 1928 has been reinvestigated. The species was found in marine water (Yellow Sea) near Shanghai, Eastchina. Stained specimens (protargol) are characterized morphometrically. The shape of the extrusomes (toxicysts) and the structure of o...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80110-0
更新日期：1990-10-19 00:00:00
abstract：:Lake Tanganyika is world famous for a fauna that is rich in endemic species. On the other hand, it seems to be particularly poor in species of planktonic ciliates. Only the coastal infusorial fauna, for the most part mesopsammic, constitutes an extensive biomass with relatively few species. However, some are character...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80144-6
更新日期：1991-02-22 00:00:00
abstract：:The gene coding for the small subunit ribosomal RNA molecule was sequenced in three marine spirotrichs: Pseudoamphisiella lacazei, P. alveolata, and Parabirojimia similis, the systematic positions of which remain unclear in spite of recent progress. Phylogenetic trees were constructed by means of neighbor-joining (NJ)...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2007.08.002
更新日期：2008-02-01 00:00:00
abstract：:Mitotis in the choanoflagellate Monosiga sp. has been studied by electron microscopy for the first time based on serial sections of metaphase and anaphase. The dense metaphase plate is formed by chromosomes at the centre of the nucleus. Spindle poles are located at the opposite sides of this plate. The nuclear envelop...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80292-0
更新日期：1993-02-19 00:00:00
abstract：:The Javan ferret-badger Melogale orientalis (Carnivora: Mustelidae: Helictidinae) is a small carnivore endemic to Indonesia. In the family Mustelidae, 10 Eimeria, 12 Cystoisopora, one Isospora, and one Hammondia species are known, but no eimeriid coccidia has been yet described in the subfamily Helictinidae (ferret ba...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2019.125668
更新日期：2020-04-01 00:00:00
abstract：:Resting cysts of Parentocirrus hortualis were investigated, using live observation, SEM and TEM. Processes during encystation and excystation were observed in vivo under the light microscope. During encystation, the trophic body becomes globular, the ciliature is resorbed in an anterior direction, the macronuclear nod...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2015.12.003
更新日期：2016-04-01 00:00:00
abstract：:We have characterized the intracellular development and ultrastructure of a novel parasite that infected the marine benthic dinoflagellate Prorocentrum fukuyoi. The parasite possessed a combination of features described for perkinsids and syndineans, and also possessed novel characters associated with its parasitic li...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2007.08.004
更新日期：2008-02-01 00:00:00
abstract：:A new species of unicellular opisthokont protist, Nuclearia thermophila sp. nov., was isolated from the warm spring water of Yunoko Lake, Japan, and has been described using light and electron microscopy. It exists as a spherical floating form and a flattened amoeboid form showing various shapes. The cells occasionall...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2008.09.004
更新日期：2009-05-01 00:00:00
abstract：:Human adenoviruses are responsible for a wide range of clinical infections and are present in aquatic environments, including river, seawater, drinking-water and sewage. Free-living amoebae (Acanthamoeba) in the same environments may internalize them and other microorganisms can act as a reservoir for the internalized...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2016.02.006
更新日期：2016-06-01 00:00:00
abstract：:The endonucleobiotic bacterium Holospora elegans inhabits the micronucleus of Paramecium caudatum. In this paper the release of the infectious form (IF) of H. elegans from its host is described. During the anaphase of the micronuclear division most of the IFs remain within the connecting piece which, therefore, may be...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(89)80021-5
更新日期：1989-10-27 00:00:00
abstract：:Species in the genera Hexasterias and Halodinium have been recorded over the last decades as acritarchs in palynological and/or plankton studies. In paleoenvironmental studies, these resting stages are often interpreted as indicators of freshwater input. The biological affinity of these genera has never been definitel...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2018.09.002
更新日期：2018-10-01 00:00:00
abstract：:Pterospora demodendrion sp.nov., an acephaline eugregarine (Eugregarinorida, Urosporidae) from the coelom of Axiothella mucosa (Polychaeta, Maldanidae) is described. The gamont averages 277 × 139 μm and possesses 20-36 posterior prolongations. Gametocysts average 412 × 287 μm; without polar funneled openings. Oocysts ...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80427-X
更新日期：1991-03-28 00:00:00
abstract：:During conjugation, Stylonychia mytilus undergoes repetitive somatic development by reorganizing the cortical ciliature consecutively for three times. The control of these reorganizations by the nucleus was investigated employing amicronucleates generated by microsurgery. When amicronucleates conjugate, they underwent...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80154-9
更新日期：1991-02-22 00:00:00
abstract：:The behavior of Euplotes crassus has been studied qualitatively and quantitatively in an attempt of throwing new light onto the problem of the relationships occurring among motor behavior, systematic position and evolutionary strategies of the ciliated protozoa. It was found that both single and paired Euplotes creep ...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(88)80056-7
更新日期：1988-03-01 00:00:00
abstract：:Since its description 35 years ago from Quebec, Canada, the poorly known monospecific testate rhizopod genus Puytoracia (type species, Puytoracia bergeri) has been reported only from the Himalayan region of Nepal. This species was recently found at 13 locations in Ontario, Canada, and the range of form variation of th...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2006.04.002
更新日期：2006-09-01 00:00:00
abstract：:The morphology and morphogenesis of a marine ciliate, Epiclintes auricularis rarisetus nov. sspec., collected from Qingdao, northern China were studied on live and protargol-impregnated specimens. This isolate can be recognized by its elongate, contractile and tripartite body with a size of 200-400 x 20-40microm in vi...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2009.01.005
更新日期：2009-11-01 00:00:00
abstract：:The apostome ciliate Hyalophysa chattoni, a symbiont of the estuarine grass shrimp Palaemonetes pugio, was tested for its growth and reproductive ability in a wide range of salinities from 0.1 to 55 ppt. Shrimp, with their attached ciliates, were slowly acclimated to different salinities in order to assess protozoan c...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2007.11.002
更新日期：2008-05-01 00:00:00
abstract：:A new ciliate species (Cyclidium porcatum) is the first freshwater anaerobic scuticociliate to be cultured and described. It contains a unique tripartite structure consisting of hydrogenosomes (confirmed by cytochemical staining for hydrogenase), interspersed with methanogens (confirmed by auto fluorescence and in sit...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80281-6
更新日期：1993-05-28 00:00:00
abstract：:We observed reproductive swarmer cells of the nassellarian and spumellarian polycystine radiolarians Didymocyrtis ceratospyris, Pterocanium praetextum, Tetrapyle sp., and Triastrum aurivillii using light, scanning and transmission electron microscopy. The swarmer cells had subspherical to ovoid or spindle shapes with ...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2016.02.007
更新日期：2016-06-01 00:00:00
abstract：:The free-living anaerobic flagellate Psalteriomonas vulgaris n. spec. is described. The organism has four flagella of equal length which arise immediately subapically to the anterior part of the cell, within the apex of the ventral groove. The ultrastructural organization of the mastigont system and the ventral groove...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80302-0
更新日期：1993-02-19 00:00:00
abstract：:The morphology and infraciliature of two Frontonia species, F. shii spec. nov. and F. paramagna Chen et al., 2014, isolated from a freshwater pond in northeastern China, were investigated using living observation and silver staining methods Frontonia shii spec. nov. is recognized by the combination of the following ch...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2018.01.002
更新日期：2018-04-01 00:00:00
abstract：:Copidognathus nautilei Bartsch, 1997, from a hydrothermal vent field of the Mid-Atlantic Ridge at about 13 degrees N, 45 degrees W and 4090 m depth, was infested with the suctorian Corynophrya abyssalis n. sp., with up to 58 epizoans per mite. The new suctorian has a sacciform body with seven longitudinal ribs, a comp...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2010.02.001
更新日期：2010-08-01 00:00:00
abstract：:Hyalophysa clampi Browning and Landers, 2012 was reexamined to determine all stages in the life cycle of this symbiotic ciliate. The cell feeds as a normal exuviotroph within the exoskeleton of its molted crayfish host but does not encyst following the trophont stage. Trophonts transform into swimming tomont stages, w...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2019.125654
更新日期：2020-02-01 00:00:00
abstract：:The morphology, ontogenesis, conjugation, and phylogenetic position of Metopus boletus nov. spec. were studied using live observation, various silver impregnation methods, scanning electron microscopy, morphometry, and the 18S rRNA gene sequence. The new species is outstanding in having a mushroom-like appearance; a g...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2019.04.002
更新日期：2019-06-01 00:00:00
abstract：:Vertical variations in trophic-functional patterns of biofilm-dwelling ciliates were studied in coastal waters of the Yellow Sea, northern China. A total of 50 species were identified and assigned to four trophic-functional groups (TFgrs): algivores (A), bacterivorous (B), non-selective (N) and raptors (R). The trophi...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2018.01.003
更新日期：2018-04-01 00:00:00
abstract：:Neoparamoeba perurans is the aetiological agent of amoebic gill disease (AGD) in salmonids, however multiple other amoeba species colonise the gills and their role in AGD is unknown. Taxonomic assessments of these accompanying amoebae on AGD-affected salmon have previously been based on gross morphology alone. The aim...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2018.10.003
更新日期：2019-02-01 00:00:00
abstract：:Apostome ciliates from crayfish and freshwater shrimp in southern and central Alabama were surveyed in this study. Hyalophysa bradburyae was found on both crayfish and shrimp from 16 sites in eight drainages. A new species, Hyalophysa clampi n. sp., was found infesting crayfish at one site and simultaneously infesting...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2011.11.005
更新日期：2012-08-01 00:00:00
abstract：:A strain of the free-living flagellate Dimastigella trypaniformis Sandon was isolated from the gut contents of the Australian termite Mastotermes darwiniensis Froggatt. The fine structure of the isolate (Ulm strain) was compared with a strain isolated from soil in Scotland (Glasgow strain). The biflagellated trophozoi...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80404-9
更新日期：1993-11-12 00:00:00
