Results 71 to 80 of about 1,359,389 (403)

Kinship composition in mammals

Royal Society Open Science, 2023
Understanding the evolution of group-living and cooperation requires information on who animals live and cooperate with. Animals can live with kin, non-kin or both, and kinship structure can influence the benefits and costs of group-living and the evolution of within-group cooperation. One aspect of kinship structure is kinship composition, i.e.
Pereira, André S., De Moor, Delphine, Casanova, Catarina, Brent, Lauren J. N.   +3 more
openaire   +5 more sources

A cellular system to study responses to a collision between the transcription complex and a protein‐bound nick in the DNA template

FEBS Letters, EarlyView.
We present the cellular transcription‐coupled Flp‐nick system allowing the introduction of a Top1‐mimicking cleavage complex (Flpcc) at a Flp recognition target site within a controllable LacZ gene. LacZ transcription leads to the collision of RNA polymerase II (RNAPII) with Flpcc, and this causes RNAPII stalling, ubiquitination, and degradation.
Petra Herring, Morten Roedgaard, Camilla Myrup Holst, Helene Christensen, Birgitta R. Knudsen, Lotte Bjergbaek, Anni Hangaard Andersen   +6 more
wiley   +1 more source

Herpesvirus Infection in a Breeding Population of Two Coexisting Strix Owls

Animals, 2021
Birds are a frequent host of a large variety of herpesviruses, and infections in them may go unnoticed or may result in fatal disease. In wild breeding populations of owls, there is very limited information about the presence, impact, and potential ...
Zoran Žlabravec, Al Vrezec, Brigita Slavec, Urška Kuhar, Olga Zorman Rojs, Joško Račnik   +5 more
doaj   +1 more source

Darwin and evolution: a set of activities based on the evolution of mammals [PDF]

, 2010
These activities, prepared for key stage 5 students (ages 16-18) and also suitable for key stage 4 (ages 14-16), show that physical appearance is not necessarily the best way to classify mammals.
Haresnape, Janet
core  

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

FEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke, Izadora Volpato Rossi, Marcel I. Ramirez   +2 more
wiley   +1 more source

Model sensitivity limits attribution of greenhouse gas emissions to polar bear demographic rates

Scientific Reports
Greenhouse gas emissions continue to increase and negatively affect sea ice conditions that polar bears rely on. It is therefore important to better understand how specific emissions levels affect polar bear demography.
Ryan R. Wilson, Erik M. Andersen
doaj   +1 more source

Social evolution in mammals [PDF]

Science, 2021
Mammal societies Although a few types of structures prevail, social systems among mammals are relatively varied. New techniques, from monitoring to genetics, have allowed for a deeper understanding of this variation, how it is related to the environment, and how it has evolved.
openaire   +3 more sources

Fossil pollen records reveal a late rise of open-habitat ecosystems in Patagonia [PDF]

, 2012
The timing of major turnovers in terrestrial ecosystems of the Cenozoic Era has been largely interpreted from the analysis of the assumed feeding preference of extinct mammals. For example, the expansion of open-habitat ecosystems (grasslands or savannas)
Barreda, Viviana Dora, Palazzesi, Luis
core   +1 more source

Protonophore activity of short‐chain fatty acids induces their intracellular accumulation and acidification

FEBS Letters, EarlyView.
The protonated form of butyrate, as well as other short‐chain fatty acids (SCFAs), is membrane permeable. In acidic extracellular environments, this can lead to intracellular accumulation of SCFAs and cytosolic acidification. This phenomenon will be particularly relevant in acidic environments such as the large intestine or tumor microenvironments ...
Muwei Jiang, Frans Bianchi, Geert van den Bogaart   +2 more
wiley   +1 more source

Detection of Herpesviruses in Wild Bird Casualties in Slovenia

Frontiers in Veterinary Science, 2022
The complete host range of avian herpesviruses in wild birds is unknown, and information about nucleotide sequences is available only in limited cases.
Zoran Žlabravec, Brigita Slavec, Al Vrezec, Al Vrezec, Urška Kuhar, Olga Zorman Rojs, Zlatko Golob, Jožko Račnik   +7 more
doaj   +1 more source