How Corona differs from crocodiles

When one could have wished for something – a moderate wish within the realm of realistic possibilities – then maybe that Sars-CoV-2 behaves evolutionarily similar to what we know from crocodiles. These reptiles have hardly changed in terms of their basic body structure since the early Jurassic 200 million years ago, and that with a very clear wealth of variants: There are only 24 species. Ridiculously few, then, compared to dinosaurs or the scaled lizards living today, which each come in around 10,000 species.

A study in “Communications Biology” has recently examined the background to this evolutionary constancy on the basis of a phylogenetic model: According to this, crocodiles have developed very little over long periods of time, measured by their body size. Apparently they had reached such an efficient and versatile development status that major adjustments were only necessary if they were really necessary due to changes in their environment, e.g. climatic type.

For the crocodiles and our getting along with them, that’s probably good news. Sars-CoV-2 was also initially not thought to be excessively susceptible to mutations: half the rate of change as the flu virus, a quarter as strong as the HI virus, these were the experts’ assessments based on genetic sequencing data. “As long as almost everyone on the planet is susceptible, there is probably little evolutionary pressure to adapt to the virus to develop better transferability,” read “Nature” in September. In the meantime we unfortunately know better and have to realize that the virus has probably wasted its chance to become the crocodile in the virus spectrum.

There is still speculation about the origins of the mutations. But one thing is clear: where there are many infected people, there are many mutations. And in fact, one can hardly imagine which crocodile monsters would populate the earth today if there had been anywhere near as many crocodiles as Sars-CoV-2 particles in the history of the earth.

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How did crocodiles survive 66 million years ago?

How the crocodiles survived the asteroid strike that wiped out life on Earth baffled scientists for decades, and what added to the confusion is the similarity between today’s crocodiles and those that lived in the Jurassic period, about 200 million years ago.

According to the recent study, the crocodiles survived the asteroid collision that wiped out the dinosaurs thanks to their “varied” and “efficient” body shape, which allowed them to deal with the tremendous environmental changes resulting from the collision.

Crocodiles can live and grow in or outside the water, and they can live in complete darkness, in addition to being very strong, which means that they can survive terrible injuries.

Crocodiles generally prefer warm conditions, such as those that existed in the era of dinosaurs, because they cannot control their own body temperature and therefore they need warmth from the environment.

According to the study, when the giant asteroid collided with the Gulf of Mexico 66 million years ago and wiped out many plants and animals on Earth, the crocodiles survived by extracting energy from the sun.

This means that crocodiles did not need to eat like warm-blooded animals, such as birds or mammals, in order to survive.

Since then, crocodiles have changed very little, and researchers believe that their limited diversity and apparent lack of development is the key to their success, according to the British newspaper “Daily Mail”.

According to researchers at the University of Bristol, the slow evolution rate of the alligator is due to reaching a form that is versatile and effective enough to deal with a severe global disaster.

“This may be one explanation for why the crocodiles survived the meteor impact at the end of the Cretaceous period, when the dinosaurs perished,” said lead author Max Stockdale.

Crocodiles have landed on a lifestyle that has been versatile enough to adapt to the massive environmental changes that have occurred since dinosaurs have been around.

Crocodiles can hold their breath underwater for up to an hour, due to their great ability to retain oxygen.

It can also move around the ground with amazing speed, especially when upset or angry.

In the case of crocodiles, there are very few living species today, specifically only 25, while there are thousands of some animal species such as lizards and birds that were present at about the same time, or even less.

Stockdale and his colleagues found that the reason for this is that crocodiles have a pattern of evolution, governed by environmental change, known as “intermittent equilibrium”, which explains the reason for the extinction of some prehistoric species, such as giant animals, such as dinosaurs, plant eaters, fast-running animals, and excavator animals. Burrows, animal-like monsters that lived in the sea.

As for the rate of its development, it was slow, in general, but sometimes crocodiles develop more quickly due to the change of the environment, and the development accelerates in particular when the climate is warmer, with the increase in the size of their bodies.

“Our analysis used a machine learning algorithm to estimate rates of evolution. The rate of evolution is the amount of change that has occurred over a given period of time, which we can calculate by comparing measurements from the fossils with regard to their age,” said Stockdale.

“For our study, we measured the size of the body, which is important because it interacts with the speed of the animals’ growth, the amount of food they need, the extent of their population and the possibility of their extinction,” he added.

Researchers are now planning to find out why some of the prehistoric crocodile species have gone extinct, while others have not.

The latest study supports a theory that was put forward more than 20 years ago, and indicates that its endurance is due to a unique design, it is very strong, and it has immune systems that can withstand severe injuries.

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Soyuzmultfilm showed footage from the cartoon about Cheburashka with Agutin :: Society :: RBC

More than half a century after the release of the first classic cartoon about Crocodile Gena and Cheburashka, Soyuzmultfilm presented a short film with these characters. It will be called “Cheburashka. The secret of the holiday “

Photo: “Soyuzmultfilm”

“Soyuzmultfilm” reported that a new short film based on the cartoon about Cheburashka and Crocodile Gena will appear by the New Year, RIA Novosti reports with reference to the company’s press service.

The cartoon will be called “Cheburashka. The secret of the holiday ”.

“Last year, on the eve of the holiday, we showed the continuation of the adventures of Umka the bear, and this year we will tell a new New Year story about Cheburashka and Crocodile Gena. It will be a very warm and cozy cartoon about sincere friendship and how easy it is to create a real miracle for yourself, ”said Yuliana Slashcheva, Chairman of the Board of the Film Studio.

Photo: “Soyuzmultfilm”

The cartoon will be made in 3D animation technology. It will be dubbed by singers Leonid Agutin and Angelica Varum.

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A huge alligator gobbles up the prey of duck hunters in Florida

Two hunters in Florida had to resign themselves to letting a massive 13-foot-long alligator snatch their ducks from them before they could pull them out of the water.

In a video posted on the Facebook account of Cass Couey, who along with Kevin Stipe owns the Pro Hunt navigation application, the animal is observed going straight to the ducks and swallowing them quickly without giving the hunters time to react.

“This is just fishing, duck hunting in Florida also has a tax collector! The monster crocodile eats ducks while hunting with the Pro Hunt app! ”Said Couey.

The incident occurred in Leesburg, in central Florida, last week, when duck hunters encountered the crocodile that became their great obstacle during the hunt.

“Here we go, number 2 of the day. Okay, you’re fed, now get out of here, ”says one of the hunters in the video.

The video was viewed by more than 600,000 people and shared more than 10,000 times, in addition to having 2,500 comments.

Many of the people who saw the video called the crocodile a “dinosaur” of how huge the reptile is.

The Florida Fish and Wildlife Conservation Commission (FWC) said alligators have inhabited Florida swamps, rivers and lakes for many centuries, and are found in all 67 counties.

In recent years, Florida has seen tremendous growth in human population. Many residents are looking for beachfront homes and are increasingly involved in water-related activities. This can result in more frequent crocodile-human interactions and greater potential for conflict.

Ten crocodile attacks were recorded in 2019 and one of them was fatal, according to figures from the FWC.

Although many Floridians have learned to live with crocodiles, the potential for conflict always exists, the FWC warned, reminding people to never feed them and keep their distance if they see one.

Swim only in designated swimming areas during daylight hours. And keep pets on a leash and away from water.

Journalist and editor with specialization in Latin America, judicial, business and local issues related to the Latin American community. Much of his career was spent in international news agencies. His research work “Emigrate to death: Venezuelans murdered in Latin America” ​​received the 2019 FSNE and SPJ Sunshine State awards.

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Florida man pulls his cub out of the jaws of an alligator

A man jumped into a lake in Estero, on Florida’s west coast, to rescue his three-month-old cub from the jaws of a crocodile that could barely open its jaws, as seen in a dramatic video posted. went viral.

Richard Wilbanks, 74, ran off when he saw his little dog Gunner in distress in the lake behind his home, as seen on the security camera footage.

The man told CNN that more than grabbing the crocodile, which was not large, the difficult thing was to open the jaws to remove his dog, a Cavalier King Charles Spaniel.

As he did so, the pet ran into the house.

“A legend”, they commented on social networks when they observed that the man, despite having to dive completely into the water and fight the crocodile, never let go of his cigarette from his mouth.

“We were walking through the pond and it came out of the water like a missile. I never thought an alligator could be so fast. It was so fast, ”Wilbanks told CNN.

Holding the crocodile was not that difficult, but opening the jaws was “extremely difficult,” he added.

The dog was unharmed and Wilbanks said he was vaccinated against tetanus as a precaution because he suffered some bites on his hands.

Wilbanks was in favor of keeping the crocodile alive.

“They are part of nature and part of our lives,” he said.

He noted that he still takes Gunner for a walk, but keeps him on a leash and away from the edge of the pond.

“Our pets are like family to us,” he said.

Unusual crocodile stories are common in Florida, a swampy state home to the huge Everglades wetland, declared a nature reserve.

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Paleontology: The lost crocodile skull

Dhe Nile crocodile, also native to further south in Africa, is closely related to the American representatives of the genus Crocodylus. This is not only shown by molecular genetic studies. A similar physique and similar parasites also suggest an African descent of all four Crocodylus species that cavort in the New World.

A fossil crocodile that is believed to be the common ancestor of the Nile crocodile (Crocodylus niloticus) and its American sister species has only recently been identified: Scientists working with Massimo Delfino from the Università di Torino and Dawid A. Iurino from the Sapienza Università di Roma discovered the “missing link” in a Roman museum. It is a matter of Crocodylus checchiai, a crocodile from the late Miocene. In 1947, the Italian paleontologist Angiola Maria Maccagno had scientifically described this fossil species. Based on a crocodile skull and lower jaw that came from the As Sahabi region in Libya. This fossil site about 130 kilometers south of Ajdabiya harbors excellently preserved bones of various animals that were on the move around seven million years ago.

The skull of Crocodylus checchiai described by Maccagno as a type has, however, been lost. Three other crocodile skulls of the same origin were lost during the Second World War. A fourth, recovered in Libya in 1939 and used by Maccagno in 1952 Crocodylus checchiai identified, was tracked down by Delfino and his colleagues in Rome, in the Museo Universitario di Scienze della Terra of the Sapienza University.

Oldest fossil from the Pliocene

With the help of a computer tomograph, the fossil crocodile skull could be examined much more closely than was possible in the middle of the twentieth century. Based on these studies, Crocodylus checchiai recently described again in detail in the Nature journal “Scientific Reports”. Instead of the undetectable skull that Angiola Maria Maccagno had in mind at the time, the fossil skull, which was thoroughly illuminated, now serves as the type. All future finds must be measured against it, if they belong to the species Crocodylus checchiai should be added.


The skull of Crocodylus checchiai
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Image: Bruno Mercurio

When compared to various other crocodiles, it was found that the seven-million-year-old fossil most closely resembles the four species of crocodiles that inhabit tropical America today. That is why the fossil comes from Libya as a possible ancestor of all American representatives Crocodylus in question. It is fitting that the oldest fossil of this genus ever discovered in the New World dates from the early Pliocene. This makes it around two million years younger than Crocodylus checchiai. Meanwhile, crocodiles were of the genus Crocodylus not just emigrated west to America. Fossils from the Gargano peninsula in Apulia, which was an island at the time, testify that they also swam to Europe.

Crocodiles colonize tropical waters around the world

Thanks to the ability to live in salt water, the genus Crocodylus spread globally towards the end of the Miocene. When they arrived on new territory, these crocodiles displaced long-established ones who were already struggling with climate change at the end of the Miocene. Nowadays the genus is Crocodylus at home in the Caribbean and from Mexico to northern South America as well as in much of Africa, from Pakistan to the Philippines and the Solomon Islands and in the tropical north of Australia.

But as successfully as crocodiles have populated the waters of the tropics around the world, they often lose out when it comes to coexistence with humans. According to the “International Union for Conservation of Nature” (IUCN), five of the twelve crocodylus species are even acutely threatened with extinction. Including the Cuban crocodile (Crocodylus rhombifer), which is native to Cuba, but is currently only found in the swamps of the Zapata Peninsula and the Isla de la Juventud.

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Florida man saved from dying after alligator attack

MIAMI.- A man was attacked by a crocodile while taking a morning walk with his dog in Port St. Lucie, a town north of Miami, Florida.

The victim was identified as 61-year-old Mark Johnson, who was bitten on the leg by the reptile as he walked along a canal.

According to Johnson’s testimony, the animal was about eight feet tall. The incident occurred last Sunday around 9:30 in the morning.

According to the Local 10 television channel, the 60-year-old usually walks around the area around his house in the company of his pet named Rex.

The man said he slipped and his foot got stuck in the mud on the canal bank. “The next thing I see is the bite,” Johnson said, adding that the crocodile tried to drag him into the water.

The victim explained that thanks to his resistance, with a struggle that lasted “long seconds”, the animal released the man’s leg.

Johnson was taken to an area hospital where 62 stitches were taken to close the wound and holes made by the reptile in his right leg.

The Florida Fish and Wildlife Conservation Commission said a hunter responded in the area and captured the 250-pound alligator Wednesday.

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Reptile specialist should search for crocodile in Unstrut

Ein Fach is now supposed to devote himself to the crocodile sighted by several witnesses, which may have been swimming in the unstrut for weeks. “We hope that the expert can get an idea of ​​the situation on site as soon as possible,” said the press spokesman for the Kyffhäuserkreis district office in Thuringia, Heinz-Ulrich Thiele, on Monday. The district office turned to the man on the recommendation of reptile experts from the zoos in Leipzig and Erfurt.

Witnesses have reported seeing the reptile on the Unstrut near Schönewerda in Thuringia – a district of the city of Roßleben-Wiehe. Previously, anglers in Saxony-Anhalt had also told of a crocodile sighting in the river at the end of August. However, the animal has not yet been found in various search and lure campaigns.

The Unstrut area in the Kyffhäuserkreisgebiet should initially remain closed to anglers and walkers. Attempts to lure the animal in front of a game camera with a chicken as bait should, however, be stopped, it said.

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Search for crocodile in Unstrut: A dead chicken should help

The presence of a crocodile in the Unstrut near Schönewerda in the Kyffhäuserkreis has not yet been confirmed by excrement studies. As the State Office for Consumer Protection announced, the droppings found on the bank are excretions from a fox. The bitten fish discovered there was apparently also killed by a fox.

The district office of the Kyffhäuserkreis wants to maintain the previous closures between Bottendorf and Schönewerda for the time being. Heinz Ulrich Thiele from the District Office told MDR THÜRINGEN that new suspicious traces were discovered on Tuesday that do not rule out a large animal in the bank area. Therefore, a bait, a dead chicken, should now be laid out on the bank together with a photo trap. It is only a small effort to get clarity.

If the crocodile that a horse owner reported on Sunday actually exists, it could have moved downstream or upstream, said Thiele. The water weirs are not an obstacle for a crocodile.

On Wednesday evening another walker wanted to have seen the crocodile near Roßleben, like that Thuringian national newspaper reported. The district office is said to have confirmed this. Accordingly, the walker discovered a reptile between 6 and 7 p.m. on the river.

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A crocodile three metres it gets in the backyard of a house and causes a huge scare

Miami, United States.

The Commission for the Conservation of Fisheries and wildlife (FWC) Florida caught and returned to its natural habitat, a crocodile of more than three metres in length after the introduction in the backyard of a house in Islamorada, in the Keys of Florida.

Despite the fright caused to the locals no one was hurt.

The alligators and crocodiles of the region are protected animals against those who can only act when there is imminent risk to human life.

“There are four or five crocodiles to those who like to be in this area, but specifically this has lost the fear of humans,” noted the local newspaper the Keys News, the spokesperson for FWC, Bobby Dube.

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There are currently in the south of Florida about 2,000 american crocodiles, a species that almost are extinguished in the early 1970s when there were just 300 copies, but has managed to increase its number exponentially in the last few years.

A similar situation occurs with the alligators that, according to experts, are about 1.3 million thanks to a successful program that, for decades, managed to get them out of the danger of extinction.

The american crocodiles tend to live in the south of Florida in the habitat of salt water such as swamps, channels, or areas filled with mangrove, though, according to the FWC, have recently been moving towards the north looking for cooler waters through the network of channels.

In 2018, the agency that is responsible for the conservation of the wildlife in Florida launched a free telephone line to handle incoming calls related to situations of danger created by alligators.

The number of complaints received has also been growing as the species has recovered and because of the population growth that has sustained the region that has moved many people to areas that are the natural habitat of the crocodiles and alligators.

Unlike alligators, the american crocodiles is a species that is shy, which tends to avoid the areas in which inhabit human beings, even though in some cases may give cases like these that they lose their fear of humans.

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