Researchers have formally identified a new wildcat species, Leopardus tilcayo, from the Bolivian Yungas cloud forests - the first entirely new wildcat discovered in more than a century. Smaller than a house cat and marked with leopard-like spots, the tilcayo belongs to the tiger cat group in the genus Leopardus. The discovery was prompted when a volunteer noticed an animal brought to a sanctuary that did not match known species; genetic analyses published in Current Biology showed it diverged from its closest tiger-cat relative about 1.4 million years ago. The study names five distinct tiger-cat species in South America, underscoring previously unrecognized diversity within the group.
The team sequenced genomes from 38 individuals, including 26 Leopardus cats, producing what co-lead author Jonas Lescroart calls the most complete genetic study of these felids to date. Precise population numbers for tilcayo are unknown, prompting authors and co-lead Paola Nogales-Ascarrunz to urge intensified conservation across tiger cats and stronger protection of Yungas forests. The finding highlights both how much mammal diversity remains undocumented and the conservation urgency for habitats that shelter species not yet fully understood.
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Researchers are exploring the potential of older gene-editing techniques, such as VIPR, as the next advancement in gene editing technology. These methods could complement or enhance current tools like CRISPR, offering new possibilities for genetic modification. (nytimes.com)
Japan has surpassed 100,000 centenarians for the first time, with a total of 107,677 people aged 100 or older. The increase is attributed to advances in medicine, a healthy diet, and active lifestyles, but poses challenges for social security sustainability. (bbc.com)
ERBB4 expression in excitatory neurons drives early Alzheimer's disease pathology, including synapse loss and reactive gliosis. Blocking ERBB4 in neurons prevents these effects, highlighting its potential as a therapeutic target. (nature.com)
A small, spotted tiger cat from Bolivia has been identified as a new species, Leopardus tilcayo, the first discovery of a new cat species in over 100 years. The cat was initially mistaken for a known species but was confirmed as new after detailed analysis and photographs. (nationalgeographic.com)
The Hafnium controversy centers on claims of triggering rapid energy releases through gamma-ray emission from a nuclear isomer, 178m2Hf. These claims, first reported in 1998, remain unproven and widely disputed by experts, with no independent reproduction of the results. (en.wikipedia.org)
Scientists determined that T. Rex had a body temperature of approximately 97 degrees Fahrenheit using geochemistry techniques on fossilized teeth. This finding supports the idea that dinosaurs like T. Rex were warm-blooded rather than cold-blooded reptiles. (nytimes.com)
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