Concept

Polyphylie

Publications associées (10)

The microbial genomics of glacier-fed streams: adaptations to an extreme ecosystem

Glacier-fed streams are the cold, ultra-oligotrophic, and unstable streams that are fed by glacial meltwater. Despite these extreme conditions, they harbour a diverse and abundant microbial diversity that develops into biofilms, covering the boulders and s ...

EPFL2024

Microdiversity characterizes prevalent phylogenetic clades in the glacier-fed stream microbiome

Tom Ian Battin, Hannes Markus Peter, Susheel Bhanu Busi, Massimo Bourquin, Tyler Joe Kohler, Jade Brandani, Stylianos Fodelianakis, Paraskevi Pramateftaki, Vincent Henri De Staercke, Matteo Tolosano, Michail Styllas

Glacier-fed streams (GFSs) are extreme and rapidly vanishing ecosystems, and yet they harbor diverse microbial communities. Although our understanding of the GFS microbiome has recently increased, we do not know which microbial clades are ecologically succ ...

SPRINGERNATURE2021

Coral photosymbiosis: Linking phylogenetic identity to single cell metabolic activity in mixed symbiont populations

Anders Meibom, Isabelle Domart-Coulon, Maoz Fine, Béatrice Gaume

Tropical reef-building corals live in symbiosis with a wide range of micro-organisms, including unicellular Symbiodinium dinoflagellates also called zooxanthellae. These photosynthetic endosymbionts live inside the coral gastroderm cells. Although corals c ...

2017

Conservation and Divergence of Regulatory Strategies at Hox Loci and the Origin of Tetrapod Digits

Denis Duboule, Marion Leleu, Daniël Noordermeer

The evolution of tetrapod limbs from fish fins enabled the conquest of land by vertebrates and thus represents a key step in evolution. Despite the use of comparative gene expression analyses, critical aspects of this transformation remain controversial, i ...

Public Library Science2014

COI Barcoding of Nebelid Testate Amoebae (Amoebozoa: Arcellinida): Extensive Cryptic Diversity and Redefinition of the Hyalospheniidae Schultze

Edward Mitchell, Enrique Lara, Thierry Jean Heger

We used Cytochrome Oxidase Subunit 1 (COI) to assess the phylogenetic relationships and taxonomy of Nebela sensu stricto and similar taxa (Nebela group, Arcellinida) in order to clarify the taxonomic validity of morphological characters. The COI data not o ...

2012

A Unique Skeletal Microstructure of the Deep-Sea Micrabaciid Scleractinian Corals

Anders Meibom, Jaroslaw Hubert Stolarski

Micrabaciids are solitary, exclusively azooxanthellate deep-sea corals belonging to one of the deepest-living (up to 5,000 m) scleractinian representatives. All modern micrabaciid taxa (genera: Letepsammia, Rhombopsammia, Stephanophyllia, Leptopenus) have ...

2011

Biogeography, Evolution and Diversity of Free-Living Protists

Thierry Jean Heger

Although widely recognized as essential actors of ecosystem processes and representing a significant part of the Earth's biodiversity, free-living protists are poorly known. Major questions concerning their diversity, ecology, and evolution remain complete ...

EPFL2010

Response of testate amoeba assemblages to environmental and climatic changes during the Lateglacial-Holocene transition at Lake Lautrey (Jura Mountains, eastern France)

Edward Mitchell

We tested the response of lacustrine testate amoebae (thecamoebians) to climate and environmental changes for the Lateglacial-Holocene transition. The palaeoenvironmental history of the study site (Lake Lautrey, Jura Mountains, eastern France) was previous ...

2010

Testate amoebae analysis in ecological and paleoecological studies of wetlands: past, present and future

Edward Mitchell

Testate amoebae are an abundant and diverse polyphyletic group of shelled protozoa living in aquatic to moist habitats ranging from estuaries to lakes, rivers, wetlands, soils, litter, and moss habitats. Owing to the preservation of shells in sediments, te ...

Springer Netherlands2008

Ribosomal RNA Genes Challenge the Monophyly of the Hyalospheniidae (Amoebozoa: Arcellinida)

Edward Mitchell, Mariusz Lamentowicz, Enrique Lara, Thierry Jean Heger

To date only five partial and two complete SSU rRNA gene sequences are available for the lobose testate amoebae (Arcellinida). Consequently, the phylogenetic relationships among taxa and the definition of species are still largely dependant on morphologica ...

2008

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