Abstract：
:The morphology and the infraciliature of Pseudokeronopsis rubra [7, 10, 11], P. carnea [8] nov. comb, and P. flava [8] nov. comb, are redescribed using protargol silver staining, biometry, and chromatography. These species differ in the colour and composition of the pigment granules, the length of the midventral rows, the number of frontal cirri comprising the bicorona, and the number of transverse cirri. An albino strain of P. rubra shows a highly instable cortical pattern. Seven populations belonging to P. rubra (2 South Africa, Indopacific region), P. carnea (Helgoland, Denmark, Yugoslavia), and P. flava (Denmark) are biometrically characterized. A multiple comparison of 13 characters confirms a highly significant heterogeneity among all populations. The available literature on "red" coloured species of Pseudokeronopsis is reviewed. The data suggest a strong genetical and ecological radiation of this genus. There are probably some more "red" species, for instance a particular kind of Mediterranean population.
journal_name
Eur J Protistoljournal_title
European journal of protistologyauthors
Wirnsberger E,Larsen HF,Uhlig Gdoi
10.1016/S0932-4739(87)80010-Xsubject
Has Abstractpub_date
1987-11-01 00:00:00pages
76-88issue
1eissn
0932-4739issn
1618-0429pii
S0932-4739(87)80010-Xjournal_volume
23pub_type
杂志文章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：:The marine dinoflagellate Cochlodinium polykrikoides is a harmful algal bloom (HAB) species that severely impacts the environment and causes huge economic losses. Yellow clay (YC), considered to be a non-toxic and naturally-occurring material, represents an important step towards the direct control of HABs. In the pre...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2019.125642
更新日期：2019-10-01 00:00:00
abstract：:Cell division in Prorocentrum micans was studied with TEM, SEM and with fluorescence microscope techniques to visualize cytoskeletal structures. The cleavage furrow consists of the plasma membrane and two valvar vesicles. Its leading edge is lined with actin filaments. The completion of cytokinesis (like in some other...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80175-6
更新日期：1990-03-09 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：:We collected Rimaleptus binucleatus from soil in the surroundings of the town of Ulsan, South Korea. Its morphology and 18S rRNA gene were studied using standard methods. This possibly widely distributed species is characterized by: (i) a size of about 170-400×20-65μm; (ii) a narrowly to cylindrically dileptid body wi...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2014.07.003
更新日期：2014-10-01 00:00:00
abstract：:Dileptid and tracheliid ciliates have been traditionally classified within the subclass Haptoria of the class Litostomatea. However, their phylogenetic position among haptorians has been controversial and indicated that they may play a key role in understanding litostomatean evolution. In order to reconstruct the evol...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2011.04.006
更新日期：2011-11-01 00:00:00
abstract：:Planktonic testate amoebae in floodplains exhibit a broad-range of morphological variability. The variation size is already known, but it is necessary to know how this is for morphological variables. This study aimed to identify the relationships between testate amoebae morphology and environmental factors in four neo...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2016.08.006
更新日期：2016-10-01 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：:It is well established that in ombrotrophic bogs, water-table depth (WTD) is the primary environmental control on testate amoeba distribution. However, the environmental controls on testate amoebae in minerotrophic fens are less well known and successional change in their assemblages associated with fen-bog peatland d...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2018.07.003
更新日期：2018-10-01 00:00:00
abstract：:The living morphology, infraciliature and morphogenesis of a new ciliate, Urosomoida paragiliformis n. sp., collected from saline soil in Weinan, China, were studied in vivo and after protargol staining. Urosomoida paragiliformis n. sp. is characterized as follows: body elongate-elliptical with no tail, flexible and s...
journal_title：European journal of protistology
pub_type： 杂志文章,评审
doi：10.1016/j.ejop.2016.07.005
更新日期：2016-10-01 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：:A new colpodid ciliate, Bresslauides pratensis n. sp., was discovered in soil from a meadow field in Turkey. Its morphology was investigated using live observation, protargol impregnation, silver nitrate impregnation, and scanning electron microscopy. The new species differs from the congeners by the following combina...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2012.01.006
更新日期：2012-08-01 00:00:00
abstract：:The morphology and infraciliature of two pleurostomatid ciliates, Amphileptus aeschtae nov. spec. and Amphileptus eigneri nov. spec., collected from shrimp-culturing ponds of the Bohai Sea, China, were investigated using live observations and the protargol impregnation method. The new species A. aeschtae is identified...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2006.10.002
更新日期：2007-06-01 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：:Light- and electron microscopical observations on the morphology of the nassulid ciliate Furgasonia blochmanni show that it has somatic kinetids which reveal the nassulid pattern of somatic mono- and dikinetids with a 'B-cartwheel' in the lumen of the kinetosome and paired alveolocysts as regular components of the kin...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(88)80012-9
更新日期：1988-12-01 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 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：: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：:Haploid micronuclei produced by meiosis in Paramecium caudatum are destined either to survive or to degenerate depending upon their position in the cytoplasm. The behavior of the four meiotic division products in living cells and their DNA synthesis patterns were examined to determine whether there were differences be...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80317-2
更新日期：1992-02-21 00:00:00
abstract：:This paper summarises the Symposium 'Concepts in Protistology', during the VI European Congress of Protistology, Berlin, 25-29 July 2011. There is an increasing focus on cataloguing the number of species on earth, species barcoding initiatives, and the increasing need to reconcile molecular with morphological data in ...
journal_title：European journal of protistology
pub_type：
doi：10.1016/j.ejop.2011.11.004
更新日期：2012-05-01 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：:Expression of surface antigens is usually mutually exclusive, meaning that only one protein is present on the cell surface. With the RNAi feeding technology we induce serotype shifts in Paramecium tetraurelia which are demonstrated to be incomplete, meaning that the cells remain in a shifting state. The coexpression o...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2005.09.003
更新日期：2006-03-01 00:00:00
abstract：:Microbial eukaryotes living in low oxygen environments often have novel physiological and morphological features that facilitate symbiotic relationships with bacteria and other means for acquiring nutrients. Comparative studies of these features provide evidence for phylogenetic relationships and evolutionary history....
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2012.07.001
更新日期：2013-01-01 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：:Fine structure of the membrane system was examined in a large heliozoon, Echinosphaerium akamae, especially by means of negative staining and thin sectioning under the electron microscope. In addition to solitary membranous organelles such as mitochondrion, Golgi apparatus and nuclear envelope, there was found a conti...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(89)80047-1
更新日期：1989-02-24 00:00:00
abstract：:Gravitaxis of Paramecium at different oxygen concentrations is analyzed by means of a computer controlled image-analysis system. The gravitactic response depends on the oxygen tension: at low-oxic conditions Paramecium shows a precise negative gravitaxis which changes into a random distribution if the oxygen tension i...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/S0932-4739(11)80065-9
更新日期：1991-09-09 00:00:00
abstract：:During the last decades, the planktonic cyanobacterium Planktothrix rubescens became a dominant primary producer in many deep pre-alpine lakes. While altered physiochemical conditions due to lake warming seem to favour this cyanobacterial species, its dominance is partly attributed to factors conferring grazing resist...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2017.05.009
更新日期：2017-08-01 00:00:00
abstract：:Acanthamoebae feed on bacteria but are also frequent hosts of bacterial symbionts. Here, we describe the stable co-occurrence of two symbionts, one affiliated to the genus Parachlamydia and the other to the candidate genus Paracaedibacter (Alphaproteobacteria), within a clinical isolate of Acanthamoeba hatchetti genot...
journal_title：European journal of protistology
pub_type： 杂志文章
doi：10.1016/j.ejop.2016.04.002
更新日期：2016-10-01 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
