نتایج جستجو برای: ciliata
تعداد نتایج: 719 فیلتر نتایج به سال:
Weed plants characteristic for potato and hop fields have not been considered in the past as potential hosts that could transmit and lead to spreading of potato spindle tuber (PSTVd) and hop stunt (HSVd) viroids, respectively. To gain insight into this problem, we biolistically inoculated these weed plants with viroid populations either as RNA or as cDNA. New potential viroid host species, coll...
Little is known about protists at deep-sea hydrothermal vents. The vent sites at Guaymas Basin in the Gulf of California are characterized by dense mats of filamentous pigmented or nonpigmented Beggiatoa that serve as markers of subsurface thermochemical gradients. We constructed 18S rRNA libraries to investigate ciliate assemblages in Beggiatoa mats and from bare sediments at the Guaymas vent ...
Spatial and temporal patterns of plankton ciliates species composition in the Paraná River floodplain were investigated. Samplings were carried out in twelve environments in two distinct hydrological periods (limnophase and potamophase). A total of 61 species of ciliates were recorded, and among them 21 are classified as pelagic while 40 are considered preferentially as littoral species. The re...
The deep sea is one of the largest but least understood ecosystems on earth. Knowledge about the diversity and distribution patterns as well as drivers of microbial eukaryote (including ciliates) along the water column, particularly below the photic zone, is scarce. In this study, we investigated the diversity of pelagic ciliates, the main group of marine microeukaryotes, their vertical distrib...
In the Punjab it is very rarely seen in the domesticated state. It is also possible that this ciliate is not a common inhabitant of the intestine of the Indian pig, as it could not be found in the faeces of three pigs examined from near Kasauli, Punjab. I have also been unable to find it in the stools of six monkeys. Bentham (1920) recorded its presence in large numbers in association with Enta...
KAZUYUKI HIROOKA, GABRIEL E. BERTOLESI, MELANIE E. M. KELLY, EILEEN M. DENOVAN-WRIGHT, XIAOLU SUN, JAWED HAMID, GERALD W. ZAMPONI, ALEXANDER E. JUHASZ, LAWRENCE W. HAYNES, AND STEVEN BARNES Department of Physiology and Biophysics, Department of Ophthalmology, and Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia B3H 4H7; and Neuroscience Research Group, University of Calgar...
INTRODUCTION Ciliated protozoa play important roles in aquatic ecosystems especially regarding their functions in micro-food web and have many advantages in environmental assessment compared with most other eukaryotic organisms. The aims of this study were focused on analyzing the application of an indicator based on taxonomic relatedness of ciliated protozoan assemblages for marine environment...
Increasing environmental pollution and the continuous development of new chemicals and drugs has led to ever growing concern about the potential effects of these compounds directly or indirectly on human health. As concerns water pollution, protozoa seem to be an excellent tool to assess both toxicity and pollution: they are regarded as biological indicators of pollution when their presence or ...
Metadinium banksi was observed in rumen contents from a single goat out of eight living in southeastern Turkey. It constituted 0.25% of the total ciliate population and had a 12.5% frequency of appearance. The size and percentage occurrence of this species in the present study are compared to those previously reported for other animal hosts living in different geographical locations. This study...
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