New DNA modification ‘signature’ discovered in zebrafish — ScienceDaily

Researchers at the Garvan Institute of Medical Research have uncovered a new form of DNA modification in the genome of zebrafish, a vertebrate animal that shares an evolutionary ancestor with humans ~400 million years ago.

Dr Ozren Bogdanovic and his team discovered that unusually high levels of DNA repeats of the sequence ‘TGCT’ in the zebrafish genome undergo a modification called methylation, which may change the shape or activity of the surrounding DNA. The study, published in Nucleic Acids Research and conducted in collaboration with Queen Mary University of London, could lead to the development of new experimental models for studying how DNA modifications impact human development and disease.

“We’ve revealed a new form of DNA methylation in zebrafish at TGCT repeats, and crucially, the enzyme that makes the modification,” says Dr Bogdanovic, who heads the Developmental Epigenomics Lab at Garvan and Senior Research Fellow at the School of Biotechnology

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Tropical reef fish, 81, is the oldest ever discovered by scientists

The octogenarian fish, which is old enough to have lived through World War II, was found by the Australian Institute of Marine Science at the Rowley Shoals, about 300 kilometers (186 miles) west of Broome, as part of a study into the longevity of tropical fish.

Researchers looked at three species they said were not commonly targeted by commercial or recreational fishing in Western Australia and the Chagos Archipelago in the central Indian Ocean. The species included red bass, midnight snapper and black and white snapper.

Long in the tooth: Greenland shark named longest-living vertebrate

The 81-year-old midnight snapper was identified alongside 10 other fish over the age of 60, including a 79-year-old red bass that was also caught in the Rowley Shoals — an area spanning three coral reefs at the edge of Australia’s continental shelf.

Marine scientists determined the age of the fish by dissecting them and studying their ear bones, or otoliths, which contain annual growth

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New gelatinous ‘blob’ species discovered in the depths of the ocean

Scientists have discovered a new blob-like species of ctenophore, or comb jelly, off Puerto Rico.

The creature, named Duobrachium sparksae, was first spotted during a 2015 dive led by the NOAA Office of Ocean Exploration and Research.

An undersea drone captured high-definition video of the comb jelly during the dive. “NOAA Fisheries scientists Mike Ford and Allen Collins, working shoreside, spotted it and recognized it as novel,” said NOAA, in a statement. “This marks the first time NOAA scientists exclusively used high-definition video to describe and annotate a new creature.”

The discovery, which follows years of analysis, is described in the journal Plankton and Benthos Research.

STUNNING VOLCANIC ‘LOST WORLD’ DISCOVERED DEEP IN THE OCEAN

However, no physical samples of the comb jellyfish have been taken. “It’s unique because we were able to describe a new species based entirely on high-definition video,” said Collins, in the statement. “The cameras on

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Another mysterious monolith has been discovered in Romania

monolithaerobureau

After this monolith was discovered (before disappearing) in Utah, another was apparently spotted in Romania. 


Utah Department of Public Safety Aero Bureau

In case you thought the story of the mysterious metallic monolith couldn’t get any weirder, just remember it’s 2020 and anything’s possible. After the surprising discovery and subsequent disappearance of a monolith in the middle of the Utah desert earlier this month, it seems a similar object has been found in Romania. 

A structure that appears to be identical to the one in the Utah desert was found on Batca Doamnei Hill in Romania on Nov. 26, according to The Mirror. As was the case with the monolith found in Utah, it’s not clear where this one came from and who installed it. 

There’s a lot of unknown around the discoveries of these

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Molecular mechanism of long-term memory discovered — ScienceDaily

Researchers at the University of Basel have discovered a molecular mechanism that plays a central role in intact long-term memory. This mechanism is also involved in physiological memory loss in old age.

Many life forms, from worms to humans, have differentiated memory functions, such as short-term and long-term memory. Interestingly, at the cell and molecule level, many of these functions are nearly identical from life form to life form. Detecting the molecules involved in memory processes is of great importance to both basic and clinical research, since it can point the way to the development of drugs for memory disorders.

By studying roundworms (Caenorhabditis elegans), scientists at the Transfaculty Research Platform for Molecular and Cognitive Neurosciences (MCN) at the University of Basel have now discovered a molecular mechanism of long-term memory that is also involved in memory loss in old age. They report on their findings in the

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Mystery Gelatinous Party Balloon-Like Animal Discovered In Puerto Rico [VIDEO]

KEY POINTS

  • The new jelly comb species shares a few similarities with other ctenophores
  • The discovery was part of NOAA’s underwater exploration of Puerto Rico and the U.S. Virgin Islands
  • There have been about 100 to 150  species of comb jellies identified and validated in the past few years

In 2015, scientists encountered a peculiar creature that was shaped like a party balloon and had a gelatinous texture. After five years, they finally have a name for that mystery animal found off a Puerto Rican shore.

Scientists from the National Oceanic and Atmospheric Administration (NOAA) named the ocean creature Duobrachium sparksae. They identified it as a new species of ctenophore or what is more popularly known as the comb jellies. 

Deep Discoverer, a remotely operated underwater vehicle, was instrumental in finally identifying and naming the new ctenophore species. Details of the whole process were published in the journal Plankton

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‘Sistine Chapel of the ancients’ rock art discovered in remote Amazon forest

One of the world’s largest collections of prehistoric rock art has been discovered in the Amazonian rainforest.

Hailed as “the Sistine Chapel of the ancients”, archaeologists have found tens of thousands of paintings of animals and humans created up to 12,500 years ago across cliff faces that stretch across nearly eight miles in Colombia.

Their date is based partly on their depictions of now-extinct ice age animals, such as the mastodon, a prehistoric relative of the elephant that hasn’t roamed South America for at least 12,000 years. There are also images of the palaeolama, an extinct camelid, as well as giant sloths and ice age horses.

These animals were all seen and painted by some of the very first humans ever to reach the Amazon. Their pictures give a glimpse into a lost, ancient civilisation. Such is the sheer scale of paintings that they will take generations to study.

The

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A new species of rare phylum Loricifera discovered in the deep-sea surrounding Japan — ScienceDaily

The Loricifera is a microscopic, sediment-dwelling marine invertebrate, with a head covered in over 200 spines and an abdomen with a protective shell — known as a lorica. Since it was first discovered in 1983, just under 40 species have been written about. Now, that number is one more thanks to a group of scientists who reported on a new genus and species of Loricifera.

Their findings were published in the Journal Marine Biodiversity.

“Loricifera is a rare animal that is still under-researched, but our recent finding improves our understanding of the species’ diversity,” said lead author Shinta Fujimoto.

Loricifera typically inhabit the space between sand and mud particles in the ocean. Fossils exist from the Cambrian period, suggesting a long existence on Earth. They have complicated life cycles and a few species are reported to live in anoxic environments. Their exact position on the animal tree of life

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Megalodon fossils discovered all over the world

Megalodons, the apex predator of the seas, may have gone extinct more than 3.5 million years ago, but experts may have discovered nurseries of the massive shark all around the world, according to a new study.

The research, published in Biology Letters, notes that nurseries of the megalodon have been found in northeastern Spain, with fossils of adult and younger megalodons discovered. In all, five potential nurseries may have been found, including in the Atlantic, Caribbean and Pacific basins, with fossils ranging from 16 million to 3 million years ago.

“Our analyses support the presence of five potential nurseries ranging from the Langhian (middle Miocene) to the Zanclean (Pliocene), with higher densities of individuals with estimated body lengths within the typical range of neonates and young juveniles,” the researchers wrote in the study’s abstract. “These results reveal, for the first time, that nursery areas were commonly used by O. megalodon

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Over 60 Fake ‘Among Us’ Apps Discovered; Some Used As Malware Droppers

KEY POINTS

  • “Among Us” is a very popular game
  • It’s so popular that cybercriminals are using fake versions to spread malware into devices
  • A company has discovered more than 60 impostor apps online

Security researchers have discovered many real-life impostors masquerading as InnerSloth’s popular game, “Among Us.” These fake apps have been designed for various uses, including dropping malware into the devices they were downloaded and installed into.

Promon, a Norwegian company specializing in in-app protection, together with Wultra, has discovered more than 60 fake apps disguised as the popular multiplayer deduction game, “Among Us,” TechRadar reported. The apps, the security company said, were created by cybercriminals who are “exploiting the popularity of the multiplayer game to distribute malware.”

According to the investigation, all of the fake apps are coded to use the real app’s package name, meaning users will not be able to spot the difference unless they know

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