Results 171 to 180 of about 5,040 (205)
Feeding rates in sessile versus motile ciliates are hydrodynamically equivalent. [PDF]
ElifeLiu J, Man Y, Costello JH, Kanso E.
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Dynamic stressor regimes drive shifts in biofilm-associated parasites. [PDF]
Parasitol ResDoliwa A +9 more
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Current Biology, 2014 Have you ever stumbled across Ernst Haeckel's stunning 19th century art prints representing complex symmetrical forms that look like snowflakes, armored knights, or even futuristic space stations? Or maybe walking down an indo-pacific beach, you have taken a closer look at the warm sand only to realize that the 'sand' is really countless, minute ...
Fabien Bürki, Patrick J Keeling
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Estimating Biogenic Silica Production of Rhizaria in the Global Ocean [PDF]
Global Biogeochemical Cycles, 2020 AbstractSiliceous polycystines and phaeodarians are open‐ocean planktonic protists found throughout the water column and characterized by complex siliceous skeletons that are formed, at least partly, through the uptake of silicic acid. These protists contribute to the marine organic carbon (C) and biogenic silica (bSi) pools, but little is known about ...
Natalia Llopis Monferrer +2 more
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Polyubiquitin Insertions and the Phylogeny of Cercozoa and Rhizaria
Protist, 2005A single or double amino acid insertion at the monomer-monomer junction of the universal eukaryotic protein polyubiquitin is unique to Cercozoa and Foraminifera, closely related 'core' phyla in the protozoan infrakingdom Rhizaria. We screened 11 other candidate rhizarians for this insertion: Radiozoa (polycystine and acantharean radiolaria), a ...
David Bass +2 more
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Deep relationships of Rhizaria revealed by phylogenomics: A farewell to Haeckel’s Radiolaria
Molecular Phylogenetics and Evolution, 2013Rhizaria is one of the six supergroups of eukaryotes, which comprise the majority of amoeboid and skeleton-building protists living in freshwater and marine ecosystems. There is an overall lack of molecular data for the group and therefore the deep phylogeny of rhizarians is unresolved.
Roberto Sierra +2 more
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Molecular Phylogeny of the Widely Distributed Marine Protists, Phaeodaria (Rhizaria, Cercozoa) [PDF]
Protist, 2015 Phaeodarians are a group of widely distributed marine cercozoans. These plankton organisms can exhibit a large biomass in the environment and are supposed to play an important role in marine ecosystems and in material cycles in the ocean. Accurate knowledge of phaeodarian classification is thus necessary to better understand marine biology, however ...
Yasuhide Nakamura +2 more
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Phylogenetic Revision of the Order Entactinaria—Paleozoic Relict Radiolaria (Rhizaria, SAR)
Protist, 2020Entactinaria, an order of Radiolaria, are defined by a specific skeletal structure called "initial spicular system (ISS)". The oldest entactinarians appeared in the Ordovician period, and the extant species are thought to have survived until today.
Yasuhide Nakamura +2 more
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First record of a Xenophyophore (Rhizaria: Foraminifera) on the Chilean margin
Zootaxa, 2018Xenophyophores are a group of large foraminifera, confined to deep-sea habitats below ~500 m, whose often fragile agglutinated tests may attain sizes up to 10–15 cm or more; their agglutinated tests incorporate a variety of foreign particles (termed ‘xenophyae’), including mineral particles, foraminiferan and radiolarian tests, diatom frustules and ...
Araya, Juan Francisco, Gooday, Andrew J.
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Phylogenomics of the eukaryotic supergroup Rhizaria
1981Rhizaria is a supergroup of eukaryotes established solely on molecular characters. It comprises several groups of uncultivable free-living organisms such as foraminiferans, radiolarians, gromiids, cercozoans as well as the haplosporidians (animal parasites) and plasmodiophorids (plant parasites).
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