Connect with us

World

After all, the Galapagos tortoise is not extinct

Published

on

ATGalapagos tortoise (English)Chelonoidis nigra) considered extinct in the last 100 years, since the last specimen of this species was seen in 1906. However, in 2019 a group of biologists found a specimen in Ilha Fernandina in the Galapagos archipelago, which confirms the continuity of its existence.

During a visit to the island, a team of scientists from Princeton University discovered a female giant tortoise, but were not sure what species she belonged to, as her shell was different from that of a male found more than a century ago. By analyzing and comparing their DNA, the team confirmed that they have similar genes. It has been given the name Fernanda because of the location where it was discovered and is estimated to be over 50 years old, possibly 200 years old.

“We were able to show the connection between Fernanda and another tortoise, Fernandina. [encontrada na mesma ilha] and also to see the difference between these two turtles and the species we see on other islands.”says Steven J. Gogran, one of the authors studynow published in the scientific journal Nature. “We hope there are still some of these turtles on the island. But there are probably few copies.

The tortoise is currently observed at the Turtle Center of the Galapagos National Park..

See also  London's Tower Bridge gets stuck open up, resulting in targeted visitors chaos
Continue Reading
Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

World

“These Nazis don’t speak Russian. It encourages barbarism”: an analysis of José Milhazes and Nuno Rogueiro

Published

on

In their usual analysis of the conflict between Russia and Ukraine in Jornal da Noite, SIC columnists José Milhazes and Nuno Rogueiro highlight the withdrawal of troops from Severodonetsk, Lavrov’s statement, and the statement of a Russian neo-Nazi group.

Nuno Rogueiro reports that the soldiers who have already begun to leave Severodonetsk are heading to Lisichansk, the only point in the Luhansk region, which is still controlled by the Ukrainians.

“The withdrawal began yesterday [quinta-feira]continues, apparently without casualties. They managed to get out without being surrounded or captured,” he says.

If in Lugansk the Ukrainians practically no longer offer resistance, then in Kherson they may find themselves in a “situation of superiority” over Russian forces, Nuno Rogueiro believes.

Ukrainian troops came close to Kherson, a port city in the south of the country. Although they have not yet entered, and contrary to what is happening in the Donbass, the ratio of Ukrainian and Russian forces is “1.5 to 1,” the SIC observer explains.

“Ukrainians have a situation of equality or even superiority here,” says Nuno Rogueiro.

José Milhazes highlights Lavrov’s speech, accusing the head of Russian diplomacy of “putting his feet on his hands.”

“Firstly, this suggests that Ukraine’s accession to the European Union does not carry anything fundamental. It goes on to say that the EU and NATO are preparing for war with Russia. Then they look for examples from World War II, compare the EU and NATO with Hitler“, He says.

This is another reference from Russia to the Nazis, but there is a group “which the Russians don’t talk about”Milhazes says.

“There is a Russian neo-Nazi group that has been fighting in the Donbas since 2015, and today a statement spread within the organization itself became known. They admit that during the fighting they commit “stupid things”, and if they do “stupid things”, they must eliminate witnesses who saw what they were doing. Civilians This is nothing but the encouragement of barbarism,” he concludes.

To learn more

See also  Mundo won't overcome pandemic before 2023 - DNOTICIAS.PT

Continue Reading

World

Bank of Portugal sees risk of falling house prices | Bank of Portugal

Published

on

After four months of war in Ukraine and at a time when inflation reaches its highest level in decades, Banco de Portugal (BdP) is raising the tone of its financial stability risk warnings. Among the main risks now is the possibility of a “significant correction in market prices for residential real estate”, a scenario that, if confirmed, could have a direct impact on banks’ balance sheets.

Continue Reading

World

World’s largest bacteria found in Caribbean swamps

Published

on

Scientists have discovered the world’s largest bacterium in a Caribbean swamp, which, unlike most, is not microscopic and can be seen with the naked eye, according to Science magazine.

The thin white thread, about the size of a human eyelash, is “by far the largest bacteria known to date,” said Jean-Marie Folland, a marine biologist at Lawrence Berkeley National Laboratory and co-author of the paper citing the discovery. made.

Olivier Gros, a co-author and biologist at the University of the French West Indies and Guyana, discovered the first specimen of this bacterium, named Thiomargarita magnifica, or “magnificent sulfur pearl,” clinging to underwater leaves in the Guadeloupe archipelago in the Caribbean. Sea, 2009

The scientist did not immediately determine that this is a bacterium, due to its surprisingly large size, since these bacteria reach an average length of 0.9 centimeters.

Only more recent genetic analyzes have shown that the organism is a single bacterial cell.

“This is an incredible discovery. It raises the question of how many of these giant bacteria exist in the world and reminds us not to underestimate bacteria,” said Petra Levin, a microbiologist at the University of Washington who was not involved in the study. .

Olivier Gros also found bacteria attached to oyster shells, rocks and glass bottles in the marshes of Guadeloupe.

Scientists haven’t been able to grow it in the lab yet, but researchers say the cell has an unusual structure for bacteria.

See also  FBI heads to Beirut to enable examine substantial chemical blast

The principal difference is that it has a large central compartment, or vacuole (a cavity in cellular protoplasm), which allows some cellular functions to be carried out in this controlled environment rather than in the entire cell.

“The acquisition of this large central vacuole definitely helps the cell bypass the physical limitations (…) of cell size,” said Manuel Campos, a biologist at the French National Center for Scientific Research who was not involved in the study.

The researchers also noted that they are not sure why the bacterium is so large, but co-author Jean-Marie Folland suggested that it may be an adaptation to help it avoid being eaten by smaller organisms.

Continue Reading

Trending