Scores of sea lions die from bird flu in Argentina

Hundreds of sea lions were reported dead in Peru earlier in 2023, as the virus ravaged bird populations across South America. PHOTO: REUTERS

Scores of sea lions have died from bird flu in Argentina, officials said on Tuesday, as an unprecedented global outbreak continues to infect mammals, raising fears it could spread more easily among humans.

Animal health authorities have recently reported dead sea lions in several locations along Argentina’s extensive Atlantic coast, from just south of the capital Buenos Aires to Santa Cruz near the southern tip of the continent.

Another “50 dead specimens have been counted… with symptoms compatible with avian influenza”, read a statement from a Patagonian environmental authority.

“The number of dead is rising. There is no veterinary treatment for these cases,” a local official told AFP on condition of anonymity.

The authorities have asked Argentinians to avoid beaches along the country’s roughly 5,000km coastline where cases have been reported.

Sea lions are marine mammals, like seals and walruses. Adult males can weigh about 300kg.

The H5N1 bird flu has typically been confined to seasonal outbreaks, but since 2021 cases have emerged year-round and across the globe and led to what experts say is the largest outbreak ever seen.

Hundreds of sea lions were reported dead in Peru earlier in 2023, as the virus ravaged bird populations across South America.

There is no treatment for bird flu, which spreads naturally between wild birds and can also infect domestic poultry.

Source: https://www.straitstimes.com/world/scores-of-sea-lions-die-from-bird-flu-in-argentina

Climate change: Thousands of penguins die in Antarctic ice breakup

The down feathers on emperor chicks are not waterproof. They must fledge before the ice breaks up

A catastrophic die-off of emperor penguin chicks has been observed in the Antarctic, with up to 10,000 young birds estimated to have been killed.

The sea-ice underneath the chicks melted and broke apart before they could develop the waterproof feathers needed to swim in the ocean.

The birds most likely drowned or froze to death.

The event, in late 2022, occurred in the west of the continent in an area fronting on to the Bellingshausen Sea.

It was recorded by satellites.

Dr Peter Fretwell, from the British Antarctic Survey (BAS), said the wipeout was a harbinger of things to come.

More than 90% of emperor penguin colonies are predicted to be all but extinct by the end of the century, as the continent’s seasonal sea-ice withers in an ever-warming world.

“Emperors depend on sea-ice for their breeding cycle; it’s the stable platform they use to bring up their young. But if that ice is not as extensive as it should be or breaks up faster, these birds are in trouble,” he told BBC News.

“There is hope: we can cut our carbon emissions that are causing the warming. But if we don’t we will drive these iconic, beautiful birds to the verge of extinction.”

Dr Fretwell and colleagues report the die-off in the journal Communications Earth & Environment.

The scientists tracked five colonies in the Bellingshausen Sea sector – at Rothschild Island, Verdi Inlet, Smyley Island, Bryan Peninsula and Pfrogner Point.

Using the EU’s Sentinel-2 satellites, they were able to observe the penguins’ activity from the excrement, or guano, they left on the white sea-ice.

This brown staining is visible even from space.

Adult birds jump out on to the sea-ice around March as the Southern Hemisphere winter approaches. They court, copulate, lay eggs, brood those eggs, and then feed their nestlings through the following months until it’s time for the young to make their own way in the world.

Source: https://www.bbc.com/news/science-environment-66492767

50 years of Project Tiger: A roaring success, yet concerns abound

Despite enormous pressure from 140 crore population, India has done reasonably well to save the tiger from becoming extinct using a unique conservation scheme launched by then Prime Minister Indira Gandhi 50 years ago.

As it celebrates its golden jubilee, there is no doubt that Project Tiger is a roaring success with more than 3,000 striped cats in 53 tiger reserves spread over 75,000 sq km area.

India accounts for 70% of the world’s wild tiger population and there are indications that the count will rise significantly when Prime Minister Narendra Modi will release the latest census report later this month.

Conservationists outside the government, however, point out areas of concern notwithstanding the success. The worries range from the so-called “fortress model of conservation” to the skewed distribution of tigers and the degradation of tiger corridors.

The experts note that the National Tiger Conservation Authority (NTCA) must give attention to each of these areas in the next phase of the project with adequate funding if the roars of tigers are to be heard loud and clear in its centenary year.

At the turn of the century, India was estimated to have between 20,000 and 40,000 tigers but widespread hunting led to a sharp decline in their numbers. By 1970, the count dropped to less than 2,000 when an international cry to save the tigers reached the Prime Minister’s Office.

Indira Gandhi set up a panel under the chairmanship of Karan Singh, who wrote the first blueprint for tiger conservation starting with nine reserves – Manas, Palamau, Simlipal, Corbett, Ranthambhore, Kanha, Melghat, Bandipur and Sundarban.

By early 1980s, there were 15 tiger reserves and the numbers swelled to 28 by around 2005-06 when the Sariska episode shocked the country.

Despite an official claim of having 17 tigers in the previous year, it was realised that the predator became extinct in Sariska, thanks to poaching. The same happened to Panna after a few years.

The two episodes put the spotlight firmly on tiger conservation leading to the formation of NTCA and the commissioning of all India tiger estimates using a scientific methodology. The first estimate in 2006 revealed the presence of 1,411 tigers. Since then it’s been a steady climb – 1,706 in 2010; 2,226 in 2014 and 2,967 in 2018.

Mere numbers, however, don’t provide a holistic picture of the project’s success, according to wildlife and conservation specialists, who underscore the need to look at the habitat quality and integrity.

For instance, Palamau and Simlipal were among the first nine tiger reserves because of a sizable number of animals. But Palamau currently has none but one visitor and Simlipal, as per the 2018 census, has only 8 tigers along with 12 others who use the forest for transit.

The numbers have dwindled sharply also in Satkosia, Buxa and Indravati tiger reserves.

“While tiger populations have increased in the Western Ghats, Kumaoon, Terai region and central India, their numbers have collapsed in east, central and most parts of the northeast barring Assam. Earlier these forests used to account for nearly half of India’s total tiger population,” said Raza Kazmi, an author and wildlife historian based in Jharkhand.

Most of the eastern forests now don’t harbour the kind of prey base that is required to sustain tiger population. There are huge tracts of forests that have been wiped off the herbivores because of local hunting customs.

“The jungles in Jharkhand, Odisha and Chhattisgarh can house another 1,500 tigers if forest villages are relocated and the prey base is revived,” noted wildlife biologist Y V Jhala, who retired recently from Wildlife Institute of India, Dehradun but was involved with tiger census since 2006.

The other necessity is to move away from the fortress model of conservation to a more participatory approach with the active involvement of local communities.

One of the key recommendations of the Tiger Task Force, set up after the Sariska debacle, was sharing of 30% of profits from tiger parks with the local community.

Source: https://www.deccanherald.com/national/50-years-of-project-tiger-a-roaring-success-yet-concerns-abound-1205849.html

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