Ornithologists have described a new bird species from the subantarctic islands

Ornithologists have described a new species of bird that lives on the Diego Ramirez Islands south of South America. It is called the subantarctic rayadito. In the past, the local population was thought to be the spiny-tailed rayadito, which is widespread in Chile and Argentina. However, the analysis showed that individuals from the Diego Ramirez… Continue reading Ornithologists have described a new bird species from the subantarctic islands

Hamsters from the wet slopes of the Andes turned out to be larger than their relatives from the arid plains

Zoologists from Argentina, the USA and Chile have discovered that plateau hamsters Abrothrix hirta from the wet western slopes of the Andes are larger than relatives that inhabit the arid plains east of this mountain range. This pattern is explained by the fact that the abundance of precipitation has a positive effect on the growth… Continue reading Hamsters from the wet slopes of the Andes turned out to be larger than their relatives from the arid plains

Paleogeneticists read the genome of the “warrior with a griffin” from Nestor’s palace

Paleogeneticists have studied the origins of populations whose history is known from written sources. They discovered that the Mycenaeans arose from the mixing of Minoans and migrants whose origins were connected with the Eurasian steppe. However, the famous “warrior with a griffin,” whose rich burial was found in Pylos several years ago, did not have… Continue reading Paleogeneticists read the genome of the “warrior with a griffin” from Nestor’s palace

A 19th-century English farmer was accused of invading Australia by rabbits.

Biologists have found out who should be blamed for the environmental disaster caused by rabbits brought to Australia. Genetic analysis has shown that almost the entire local population of these animals descends from 13 wild and domestic individuals and their descendants, which were received from England in 1859 and released on his estate by settler… Continue reading A 19th-century English farmer was accused of invading Australia by rabbits.

Watering with ethyl alcohol protected the rhizome from drought

Japanese geneticists have proposed increasing the drought resistance of plants using ethanol. They watered Tal's rhizomes (Arabidopsis thaliana) with a weak alcohol solution for three days and showed that this helped the plants survive the subsequent three-week drought. In response to alcohol, the plant activates the synthesis of the stress phytohormone, abscisic acid, which helps… Continue reading Watering with ethyl alcohol protected the rhizome from drought

Analysis of 777 ancient genomes clarifies the origins of paleometal populations

Paleogeneticists analyzed 777 ancient genomes from Anatolia, southeastern Europe and western Asia, spanning the last ten thousand years of human history. Focusing on the Palaeometallic Age, scientists found that there was no gene flow from Europe to Anatolia during the entire Bronze Age. In addition, they clarified the influence of representatives of the Yamnaya culture… Continue reading Analysis of 777 ancient genomes clarifies the origins of paleometal populations

The earliest farmers formed from three ancestral populations

Paleogeneticists have discovered that the origins of West Asian populations from the Pre-Pottery Neolithic can be modeled from three ancestral groups: the Epi-Paleolithic inhabitants of Anatolia, representatives of the Natufian culture, and hunter-gatherers from the Caucasus or Iran. They also found that the Pre-Pottery Neolithic in Anatolia appears to be associated with a population that… Continue reading The earliest farmers formed from three ancestral populations

Half of the cytoplasm was taken from a living cell and its transcript was sequenced

Swiss scientists have proposed and developed a method that allows them to decipher the transcriptome of individual cells without killing them. To do this, they performed a biopsy of the cytoplasm and sequenced the resulting genetic material. Scientists have used this technique to separate different types of morphologically similar cells and describe how the expression… Continue reading Half of the cytoplasm was taken from a living cell and its transcript was sequenced

Experimental antibiotic wipes out resistant gram-negative bacteria

American researchers have developed a new antibiotic that is effective against drug-resistant gram-negative bacteria. In experiments on isolates of nosocomial bacteria and on mouse models of infections caused by them, it demonstrated high activity, while having virtually no effect on components of the normal human microbiota. The report on the work was published in the… Continue reading Experimental antibiotic wipes out resistant gram-negative bacteria

Neurodegenerative diseases have been proposed to be treated with Lindley's sap

Researchers in China were able to improve the behavior of mice suffering from dementia and Parkinson's disease, thanks to eupalinolide B, isolated from Lindley's bone marrow (Eupatorium lindleyanum). The substance suppressed neuroinflammation by reducing the activity of immune cells in the brain. Inflammation in the nervous system is considered a major cause of neuronal damage… Continue reading Neurodegenerative diseases have been proposed to be treated with Lindley's sap