Results 11 to 20 of about 816 (152)

Sessile peritrichs (Ciliophora: Peritricha) from freshwater fish in the Transvaal, South Africa

South African Journal of Zoology, 1985
J G Van As
exaly   +2 more sources

Retention of microplastics by biofilms and their ingestion by protists in rivers. [PDF]

Environ Microbiol Rep
Biofilms, which are ubiquitous in aquatic ecosystems such as rivers, may play an essential role in the fate of microplastics (MPs) and their ingestion by biofilm protists. A combination of field and laboratory experiments shows that riverine biofilms contain up to 10 times more MPs than ambient water and retain 6–12 times more MPs than surfaces without
Hamann L, Werner J, Haase FJ, Thiel M, Scherwaß A, Laforsch C, Löder MGJ, Blanke A, Arndt H.   +8 more
europepmc   +2 more sources

Effect of Cothurnia variabilis and Epistylis gammari (Ciliophora: Peritrichia) on Metabolic Rate of the Crayfish Cambarellus (Cambarellus) montezumae

Diversity, 2021
Peritrichs usually settle on the external surface and gills of crustaceans. However, their physiological effect on the host has not been studied. Respiratory rate is a susceptible index for some factors that affect an organism.
Mireya Ramírez-Ballesteros, René Cárdenas-Vázquez, Alfonso Lugo-Vázquez, Rosaura Mayén-Estrada   +3 more
doaj   +1 more source

From Mud to Meat: Comparative Metabarcoding Reveals Two Different Evolutionary Paths to Carnivory in a Group of Meiofaunal Annelids. [PDF]

Mol Ecol
ABSTRACT Evolutionary transitions to carnivory represent profound shifts in feeding mode that are often accompanied by widespread changes in organismal function, behaviour and ecology. Such transitions have evolved numerous times among animals, and predator–prey interactions have been major drivers of animal evolution.
Mack JM, Bely AE.
europepmc   +2 more sources

Diversity of ‘simple’ multicellular eukaryotes: 45 independent cases and six types of multicellularity

Biological Reviews, Volume 98, Issue 6, Page 2188-2209, December 2023., 2023
ABSTRACT Multicellularity evolved multiple times in the history of life, with most reviewers agreeing that it appeared at least 20 times in eukaryotes. However, a specific list of multicellular eukaryotes with clear criteria for inclusion has not yet been published.
Łukasz Lamża
wiley   +1 more source

Host-parasite relationship during Epistylis sp. (Ciliophora: Epistylididae) infestation in farmed cichlid and pimelodid fish [PDF]

Pesquisa Agropecuária Brasileira, 2016
: The objective of this work was to describe the host-Epistylis sp. relationship during infestation on farmed fish. Five Nile tilapia (Oreochromis niloticus) and ten hybrid surubim catfish (Pseudoplatystoma reticulatum x P.
Santiago Benites de Pádua, Maurício Laterça Martins, Gustavo Moraes Ramos Valladão, Laura Utz, Fernando José Zara, Márcia Mayumi Ishikawa, Marco Antonio de Andrade Belo   +6 more
doaj   +1 more source

Early eukaryotic microfossils of the late Palaeoproterozoic Limbunya Group, Birrindudu Basin, northern Australia

Papers in Palaeontology, Volume 9, Issue 6, November/December 2023., 2023
Abstract Fine‐grained, siliciclastic units of the >1642 ± 3.9 Ma late Palaeoproterozoic Limbunya Group, Birrindudu Basin host rich, well‐preserved organic‐walled microfossil assemblages that include members of total‐group eukaryotes. These assemblages include taxa characteristic of this interval such as Tappania plana and Satka favosa, as well as less ...
Leigh Anne Riedman, Susannah M. Porter, Maxwell A. Lechte, Angelo dos Santos, Galen P. Halverson   +4 more
wiley   +1 more source

CARD‐FISH and prey tracer techniques reveal the role of overlooked flagellate groups as major bacterivores in freshwater hypertrophic shallow lakes

Environmental Microbiology, Volume 24, Issue 9, Page 4256-4273, September 2022., 2022
Summary Heterotrophic nanoflagellates (HNF) and ciliates are major protistan planktonic bacterivores. The term HNF, however, describes a functional guild only and, in contrast to the morphologically distinguishable ciliates, does not reflect the phylogenetic diversity of flagellates in aquatic ecosystems.
Karel Šimek, Indranil Mukherjee, Jiří Nedoma, Caio César Pires de Paula, Jitka Jezberová, Dagmara Sirová, Jaroslav Vrba   +6 more
wiley   +1 more source

Intra‐genomic rRNA gene variability of Nassellaria and Spumellaria (Rhizaria, Radiolaria) assessed by Sanger, MinION and Illumina sequencing

Environmental Microbiology, Volume 24, Issue 7, Page 2979-2993, July 2022., 2022
Summary Ribosomal RNA (rRNA) genes are known to be valuable markers for the barcoding of eukaryotic life and its phylogenetic classification at various taxonomic levels. The large‐scale exploration of environmental microbial diversity through metabarcoding approaches has been focused mainly on the V4 and V9 regions of the 18S rRNA gene.
Miguel M. Sandin, Sarah Romac, Fabrice Not   +2 more
wiley   +1 more source

The biogenetic law and the Gastraea theory: From Ernst Haeckel's discoveries to contemporary views

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 338, Issue 1-2, Page 13-27, January 2022., 2022
A diagram illustrating the inspirational influence of the enigmatic Magosphaera planula on Heckel's Gastraea theory and its connection to his biogenetic law. Abstract More than 150 years ago, in 1866, Ernst Haeckel published a book in two volumes called Generelle Morphologie der Organismen (General Morphology of Organisms) in the first volume of which ...
Georgy S. Levit, Uwe Hoßfeld, Benjamin Naumann, Paul Lukas, Lennart Olsson   +4 more
wiley   +1 more source