Added July 25, 2006:

[Science] :
More than a third of all tree species around the world face extinction due largely to climate change and deforestation. Citing a report from the International Union for the Conservation of Nature(IUCN), CBS News said 38 percent of tree species are at risk, threatening ecosystems, plants, animals and ...

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Cryogenic electron microscopy (cryoEM) is a rapidly growing structural biology modality that has been successful in revealing molecular details of biological systems. However, unlike established biophysical and analytical techniques with calibration standards, cryoEM has lacked comprehensive biological test samples. Here, a cryoEM calibration sample consisting of a mixture of compatible macromolecules is introduced that can not only be used for resolution optimization, but also provides multiple reference points for evaluating instrument performance, data quality and image-processing workflows in a single experiment. This combined test specimen provides researchers with a reference point for validating their cryoEM pipeline, benchmarking their methodologies and testing new algorithms.

Current evidence supports the classification of the contemporary red wolf as a distinct species of wolf, although additional genomic evidence from historic wolf specimens could change that assessment, says Evaluating the Taxonomic Status of the Mexican Gray Wolf and the Red Wolf, a new report from the National Academies of Sciences, Engineering, and Medicine.

Shimmering carapaces and rattling claws make colourful freshwater crabs attractive to pet keepers. To answer the demand, fishermen are busy collecting and trading with the crustaceans, often not knowing what exactly they have handed over to their client.

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Up until now, scientists had only recognized a single species of giraffe made up of several subspecies. But, according to the most inclusive genetic analysis of giraffe relationships to date, giraffes actually aren't one species, but four. For comparison, the genetic differences among giraffe species are at least as great as those between polar and brown bears.

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Netvue Birdfy is dedicated to improving the quality of living by applying game-changing AI recognition technology.

New study demonstrates the potential of veterinary telehealth to reach different species of animals

By Jessica Corbett Common Dreams Far-reaching global assessment details how humanity is undermining the very foundations of the natural world     On the heels of an Earth Day that featured calls for radical action to address the current “age … Continue reading →

Quantitative proteomics reveals tissue-specific, infection-induced and species-specific neutrophil protein signatures  Nature.com

A multi-species benchmark for training and validating mass spectrometry proteomics machine learning models  Nature.com

TORONTO, ON — The classic definition of a biological species is the ability to breed within its group, and the inability to breed outside it. A study published today in the journal PLOS Biology offers some important clues about the evolution of barriers to breeding. The vast majority of the time, mating across species is […]

Citizen scientists step up to stop the spread of invasive mosquitoes, giant hornets, kudzu and other exotic species.

The 'de-extinction' company Colossal and the conservation group Re:wild found common ground in the potential of genetic technology to rescue today's disappearing creatures.

Panelistas consideran que, si bien siempre han existido, fenómenos como cambio climático y la densidad poblacional influyen en las recientes apariciones masivas.

As the world marks ‘Endangered Species Day,’ Nonsuch Expeditions is highlighting two of Bermuda’s IUCN Red Listed species — the cahow and skink — noting that the two critically endangered species are interacting on Nonsuch Island where they can “thrive without the threat of introduced predators.” Senior Terrestrial Conservation Officer Jeremy Madeiros, head of the […]

Following a video circulating showing a person hanging on to a turtle, the Department of Environment and Natural Resources [DENR] reminded the public that marine turtles are afforded protection under the Protected Species Act 2003. A Government spokesperson said, “The Department of Environment and Natural Resources [DENR] wishes to remind the public that marine turtles […]

The Sargasso Sea Commission and Inter-American Sea Turtle Convention signed an MOU aimed at “more effective conservation of sea turtle species and the habitats that they utilize.” A spokesperson said, “During the Inter-American Sea Turtle Convention [IAC] 16th Consultative Committee of Experts Meeting, Dr. David Freestone, Executive Secretary of the Sargasso Sea Commission, and Verónica […]

Osedax worms, or the ‘bone eating’ worms are little soft sacks resembling snotty little flowers. The “bone devourer” is not quite accurate as the worms…

The post Introducing a New Species: My Namesake, a New Bone-Eating Worm first appeared on Deep Sea News.

The red-cockaded woodpecker, an iconic bird in southeastern forests, has grown more numerous. So the Fish and Wildlife Service no longer lists it as an endangered species, instead classifying it as a threatened species. The Associated Press reports: in the 1970s, the red-cockaded woodpecker population had dipped as low as 1,470 clusters — or groups […]

The post Red-cockaded woodpeckers are no longer an endangered species appeared first on Liberty Unyielding.

JM Dietschy
Oct 1, 1993; 34:1637-1659
Reviews

Kyle Swovick
Dec 28, 2020; 0:RA120.002301v1-mcp.RA120.002301
Research

Cells continually degrade and replace damaged proteins. However, the high energetic demand of protein turnover generates reactive oxygen species (ROS) that compromise the long-term health of the proteome. Thus, the relationship between aging, protein turnover and energetic demand remains unclear. Here, we used a proteomic approach to measure rates of protein turnover within primary fibroblasts isolated from a number of species with diverse lifespans including the longest-lived mammal, the bowhead whale. We show that organismal lifespan is negatively correlated with turnover rates of highly abundant proteins. In comparison to mice, cells from long-lived naked mole rats have slower rates of protein turnover, lower levels of ATP production and reduced ROS levels. Despite having slower rates of protein turnover, naked mole rat cells tolerate protein misfolding stress more effectively than mouse cells. We suggest that in lieu of rapid constitutive turnover, long-lived species may have evolved more energetically efficient mechanisms for selective detection and clearance of damaged proteins.

GABAergic inhibitory interneurons comprise many subtypes that differ in their molecular, anatomical, and functional properties. In mouse visual cortex, they also differ in their modulation with an animal’s behavioral state, and this state modulation can be predicted from the first principal component (PC) of the gene expression matrix. Here, we ask whether this link between transcriptome and state-dependent processing generalizes across species. To this end, we analysed seven single-cell and single-nucleus RNA sequencing datasets from mouse, human, songbird, and turtle forebrains. Despite homology at the level of cell types, we found clear differences between transcriptomic PCs, with greater dissimilarities between evolutionarily distant species. These dissimilarities arise from two factors: divergence in gene expression within homologous cell types and divergence in cell-type abundance. We also compare the expression of cholinergic receptors, which are thought to causally link transcriptome and state modulation. Several cholinergic receptors predictive of state modulation in mouse interneurons are differentially expressed between species. Circuit modelling and mathematical analyses suggest conditions under which these expression differences could translate into functional differences.

To save a species from extinction, scientists scour the Panamanian jungle for the few remaining frogs. But will they be too late?

This is video of the new hermit crab species Pylopaguropsis mollymullerae taken by Ellen Muller at dive site 'Something Special', southern Caribbean. Credit: Rafael Lemaitre and Ellen Muller

The baby pygmy hippopotamus in a Thailand zoo has taken the internet by storm, and keepers hope she will help gain momentum for conservation efforts

Called the Australasian narrow-nosed spookfish, the cryptic species lives deep in the ocean off the coasts of New Zealand and Australia

An assessment from the International Union for Conservation of Nature paints a grim picture of the extinction risk of the world's trees

Antonia, a cloned black-footed ferret at the Smithsonian's National Zoo and Conservation Biology Institute, has produced two healthy offspring that will help build genetic diversity in their recovering population

Scientists have discovered a new fire-resilient, dual-blooming plant species in Indias Northern Western Ghats, which they have named 'Dicliptera polymorpha'.

A recent study has confirmed that the King Cobra, previously thought to be a single species, is actually made up of four distinct species. After 188 years of uncertainty, scientists identified the Northern, Sunda, Western Ghats, and Luzon King Cobras based on genetic differences and physical characteristics. This discovery helps explain the variations observed in King Cobras across their wide distribution in Asia. The study also paves the way for improved regional antivenom.

What they are, why we should care and what we can do about the problems they cause The term invasive alien species (IAS) is used to describe organisms that are introduced accidentally or deliberately into a natural environment where they are not normally found, and which have severe negative consequences for their new environment. Alien […]

The graft involved in trying to bring the peregrine falcon, Hawaiian crow and California condor back from the brink in the US makes for compelling reading in Feather Trails by Sophie Osborn

Kew scientists use paramotorists to collect rare plant species from Peruvian desert oases

Nearly 6000 species and subspecies of earthworms have been identified by scientists – but the true number could top 30,000

A group of frogs from Madagascar have mating calls that sound like Star Trek sound effects – now their species names honour captains from the series

Five years ago, a fossil found in the Philippines was determined to be from a new species of hominin called Homo luzonensis. Since then, we’ve learned a bit more about the newest member of the human family

Title: Household Dust Harbors Thousands of Microbial Species
Category: Health News
Created: 8/26/2015 12:00:00 AM
Last Editorial Review: 8/27/2015 12:00:00 AM

A new species of Jurassic dinosaur related to Tyrannosaurus rex has been discovered by paleontologists in Kyrgyzstan in Central Asia.

A new genus and species of early-diverging oviraptorosaurian dinosaur has been identified from two specimens found in Inner Mongolia, China.

The post New Oviraptorosaur Species Discovered in China appeared first on Sci.News: Breaking Science News.

A new genus and species of ankylosaur has been identified from an articulated and partial skeleton found in 1986 in southern China.

The post Paleontologists Discover New Species of Ankylosaurid Dinosaur appeared first on Sci.News: Breaking Science News.

Marine biologists at Queensland Museum Kurilpa have described a new species of hermit crab, Strigopagurus fragarchela (common name is the strawberry-clawed hermit), from the continental shelf off south‑east Queensland, Australia.

The post New Species of Hermit Crab Discovered in Australia appeared first on Sci.News: Breaking Science News.

From fish smoothies to oral antibiotics, researchers are taking matters into their own hands in a radical effort to save New Zealand’s yellow-eyed penguins

Sibert and Red Cloud, black-footed ferret siblings at the Smithsonian’s National Zoo and Conservation Biology Institute, are the first members of an endangered species born to a cloned animal.

A review of 47,282 tree species by the International Union for Conservation of Nature found that more than one third are at risk of extinction

In Finland, a new species of mosquito has been discovered bringing the count to 44. The previous findings closest to Finland, but further south, have