BEIJING, September 8, 2016: An examination of the ornamental fish market in southern China has led to the discovery of a new species and even a new genus of freshwater crab, researchers have reported.
Knowing about the growing demand for eye-catching freshwater crabs from southern China, the authors took a look at the ornamental fish market to eventually identify an individual with unusually structured male gonopod, which in crustaceans is a swimming appendage modified to serve as a reproductive organ.
O hi there i am a new genus and species of crab found in a pet market
Having their interest drawn by the peculiar crab, study leads author Chao Huang from Sun Yat-sen University in China managed to persuade the fish dealer to let them survey the collection site located in Guangdong, southern China.
Despite the superficial resemblance to an already existing freshwater crab genus, at second glance, the crab turned out to be quite distinct thanks to a unique set of features including the carapace, the monopod and the relatively long and slender legs.
Once the molecular analyses’ results were also in, the authors had enough evidence to assign the freshwater crab as a species and even a genus new to science.
Being a primarily aquatic species, the new crab prefers the pools of limestone hill streams, therefore its name Yuebeipotamon calciatile, where calciatile means ‘living on limestone’.
To adapt to the habitat, the species seems to have developed its characteristic slender legs, which make it easier for the crab to climb and move around whenever the short-lived limestone hill streams make it search for a new home, the researchers reported in the journal ZooKeys.
The carapace of the new crab is usually coloured in maroon to dark brown, while the claws and legs are reddish to purplish, the study said. (IANS)
Beijing, October 21, 2017 : As US Secretary of State Rex Tillerson prepares to visit India next week, China on Saturday warned that it will be deeply offended if any foreign leader meets with or any country invites the Dalai Lama.
On the sidelines of the 19th National Congress of the Communist Party of China, a Chinese Minister dubbed the Tibetan spiritual leader as a “political figure under the cloak of religion”.
“Any country or any organisation or anyone accepting to meet with the Dalai Lama in our view is a major offence to the sentiment of the Chinese people,” said Zhang Yijiong, Executive Vice Minister of the United Front Work Department of the ruling Communist Party of China (CPC).
“Also, since they have committed to recognising China as a sole legitimate government representing China, it contravenes their attempt, because it is a serious commitment,” Zhang added.
China accuses the Dalai Lama of stoking unrest and secessionist activities in Tibet from where the spiritual leader fled to India in 1959 after a failed uprising.
The Dalai Lama has urged for more autonomy for Tibet.
Beijing opposes any country or leader keeping in touch with the Dalai Lama.
“I want to make it clear that the 14th Dalai Lama, the living Buddha handed down by history is a political figure under the cloak of religion,” said Zhang.
In February this year, Tillerson had told members of the Senate Foreign Relations Committee during his confirmation hearing that he is committed to promoting dialogue on Tibet and receiving the Dalai Lama.
Top US Democrat Nancy Pelosi had visited the Dalai Lama in Dharamsala, India, in May, and sought to draw the world’s attention to human rights in Tibet, triggering protests by China.
China resorts to different tactics if any country hosts the Dalai Lama. For instance, Beijing blocked a major highway leading to Mongolia, crippling the economy there after Ulan Bator hosted the leader late last year.
Mongolia later apologised and promised Beijing never to invite the Dalai Lama.
“Officials, in their capacity as officials, attending all foreign-related activities represent their governments. So I hope governments around the world speak and act with caution and give full consideration to their friendship with China and their respect for China’s sovereignty,” Zhang added.
The comments from the Chinese Minister also comes days after Tillersoon described India as a partner in a strategic relationship and said the US would “never have the same relationship with China, a non-democratic society”.
According to reports, last month China refused to fund travel for visiting scholars at University of California, San Diego, apparently in retaliation for inviting the Dalai Lama to be its 2017 commencement speaker.
In April this year, China had reacted violently to a visit by the Dalai Lama to Tawang, in India’s northeast border state of Arunachal Pradesh, large parts of which is claimed by Beijing. (IANS)
New York, Oct 13: Astronomers have discovered that a Sun-like star lurking around 350 light-years away consumed the rocky equivalent of 15 Earths.
Dubbed Kronos after the child-eating Titan of Greek mythology, the star is the clearest and most dramatic case yet of a Sun-like star consuming its own planets, said Semyeong Oh, astrophysicist at Princeton University in New Jersey and lead author of the study.
“Even if our Sun ate the entire inner solar system, it wouldn’t come close to the anomaly we see in this star,” study co-author David Hogg from the Flatiron Institute in New York added.
The research did not begin as a hunt for a planet-eater.
Oh was analysing a catalog of new star data collected by the European Space Agency’s Gaia spacecraft for pairs of stars with similar speeds and trajectories.
Such duos are typically twin stars that formed close together from the same ingredients.
The analysis ultimately led to the identification of Kronos and its lesser known brother Krios.
Their official designations are HD 240430 and HD 240429, and they are both about 350 light years from Earth.
The keys to the discovery were first confirming that the widely separated pair are in fact a binary pair, and secondly observing Kronos’ strikingly unusual chemical abundance pattern, Oh explained in a statement released by the Princeton University.
Other co-moving star pairs have had different chemistries, Oh explained, but none as dramatic as Kronos and Krios.
Most stars that are as metal-rich as Kronos “have all the other elements enhanced at a similar level,” she said, “whereas Kronos has volatile elements suppressed, which makes it really weird in the general context of stellar abundance patterns.”
In other words, Kronos had an unusually high level of rock-forming minerals, including magnesium, aluminium, silicon, iron, chromium and yttrium, without an equally high level of volatile compounds — those that are most often found in gas form, like oxygen, carbon, nitrogen and potassium, the study said. (IANS)
The science communities since a long time have been debating upon the existence of Planet Nine.
Space highlights different shreds of evidence based on which scientists are stating the claim.
What Is Planet Nine?
Planet Nine is a hypothetical planet present in the far outer Solar System, whose mass is estimated to be 10 times more than the mass of Earth. The planet is said to be 20 times farther than the sun than Neptune is.
What Do Researchers Have To Say?
Dr Konstantin Batygin, a planetary astrophysicist at the California Institute of Technology, said that there were five different lines of observational evidence which pointed to the existence of Planet Nine. He stated that if this theory does not sound believable, then people would have to come up with the answers of the five pieces of evidence which could lead to further confusion.
Batygin in 2016 published a study examining the six known objects in the Kuiper Belt, a circumstellar disc in the Solar System beyond the planets that extends from the orbit of Neptune towards interstellar space.
The study examines all the objects have elliptical orbits pointing in the same direction and are tilted the same way. These serve as evidence to the planet’s existence.
It is being said that the objects are tilted 30 degrees downward compared to the plane where the eight official planets circle the sun. Researchers also made use of computer simulations of the solar system including the Planet Nine and to demonstrate that there should be more objects tilted a whopping 90 degrees to solar plane. It was revealed that five such objects, which fit these parameters were already known.
The study led to the birth of two more ideas. Researchers said that this planet could have tilted the planets of the solar system during the last 4.5 billion years.
Planet Nine’s existence could also tell the reason as to why Kuiper Belt objects orbit in the opposite direction as compared to other things in the solar system.