Results 11 to 20 of about 291 (134)

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

The redclaw crayfish: A prominent aquaculture species with invasive potential in tropical and subtropical biodiversity hotspots

Reviews in Aquaculture, Volume 13, Issue 3, Page 1488-1530, June 2021., 2021
Abstract The redclaw crayfish (Cherax quadricarinatus; hereafter redclaw), native to northern Australia and southern New Guinea, is among the largest freshwater decapods. It matures early and is considered highly prolific as females may lay over one thousand eggs in a single clutch.
Phillip J. Haubrock, Francisco J. Oficialdegui, Yiwen Zeng, Jiří Patoka, Darren C.J. Yeo, Antonín Kouba   +5 more
wiley   +1 more source

How To Quantify a Genetic Firewall? A Polarity‐Based Metric for Genetic Code Engineering

ChemBioChem, Volume 22, Issue 7, Page 1268-1284, April 6, 2021., 2021
Quantifying the distance: If two organisms operate under different genetic codes, how likely is that they could still properly interpret each other's genes? We introduce a versatile metric to quantify the distance between the different genetic codes.
Markus Schmidt, Vladimir Kubyshkin
wiley   +1 more source

Functional Ecology of Two Contrasting Freshwater Ciliated Protists in Relation to Temperature

Journal of Eukaryotic Microbiology, Volume 68, Issue 1, January/February 2021., 2021
Abstract We conducted microcosm experiments with two contrasting freshwater ciliates on functional traits (FTs) related to their growth rate (numerical response, NR) and ingestion rate (functional response, FR) over a range of ecologically relevant temperatures.
Xiaoteng Lu, Yunyi Gao, Thomas Weisse
wiley   +1 more source

Morphometric study of a Brazilian strain of Carchesium polypinum (Ciliophora: Peritrichia) attached to Pomacea figulina (Mollusca: Gastropoda), with notes on a high infestation

Zoologia (Curitiba), 2010
During an ecological study of the epibiotic relationship between ciliate protists and Pomacea figulina (Spix, 1827) (Gastropoda, Ampullariidae), originating from an urban stream in southeast Brazil, a high infestation by the peritrich ciliate Carchesium ...
Roberto Júnio P. Dias, Adalgisa F. Cabral, Isabel C. V. Siqueira-Castro, Inácio D. da Silva-Neto, Marta D'Agosto   +4 more
doaj   +1 more source

Swimming of peritrichous bacteria is enabled by an elastohydrodynamic instability [PDF]

Scientific Reports, 2018
AbstractPeritrichously-flagellated bacteria, such as Escherichia coli, self-propel in fluids by using specialised motors to rotate multiple helical filaments. The rotation of each motor is transmitted to a short flexible segment called the hook which in turn transmits it to a flagellar filament, enabling swimming of the whole cell.
Riley, Emily E, Das, Debasish, Lauga, Eric   +2 more
openaire   +8 more sources