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Stevenzex

12 Jun 2024 - 07:04 pm

African elephants use names to call each other, study suggests
tripscan тор
Wild African elephants may address each other using individualized calls that resemble the personal names used by humans, a new study suggests.

While dolphins are known to call one another by mimicking the signature whistle of the dolphin they want to address, and parrots have been found to address each other in a similar way, African elephants in Kenya may go a step further in identifying one another.

These elephants learn, recognize and use individualized name-like calls to address others of their kind, seemingly without using imitation, according to the study published Monday in the journal Nature Ecology and Evolution.
The most common type of elephant call is a rumble, of which there are three sub-categories. So-called contact rumbles are used to call another elephant that is far away or out of sight. Greeting rumbles are used when another elephant is within touching distance. Caregiver rumbles are used by an adolescent or adult female toward a calf she is caring for, according to the study.

The researchers looked at these three types of rumbles, using a machine-learning model to analyze recordings of 469 calls made by wild groups of females and calves in Amboseli National Park and Samburu and Buffalo Springs National Reserves between 1986 and 2022. All the elephants could be individually identified by the shape of their ears, as they had been monitored continuously for decades, according to the study.

The idea was that “if the calls contained something like a name, then you should be able to figure out who the call was addressed to just from the acoustic features of the call itself,” said lead study author Mickey Pardo, an animal behaviorist and postdoctoral fellow at Cornell University in New York.

The researchers found that the acoustic structure of calls varied depending on who the target of the call was.

The machine-learning model correctly identified the recipient of 27.5% of calls analyzed, “which may not sound like that much, but it was significantly more than what the model would have been able to do if we had just fed it random data,” Pardo told CNN.

“So that suggests that there’s something in the calls that’s allowing the model to identify who the intended receiver of the call was,” he added.

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12 Jun 2024 - 06:24 pm

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12 Jun 2024 - 06:00 pm

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12 Jun 2024 - 05:09 pm

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12 Jun 2024 - 03:33 pm

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Larryabick

12 Jun 2024 - 02:37 pm

Elon Musk was star guest this year at an annual conference organized by Italian PM Giorgia Meloni’s Brothers of Italy party.
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He arrived against the backdrop of an ice-skating rink and an ancient castle in Rome with one of his 11 children to tout the value of procreation.

Italy has one of the lowest birth rates in the world, and Musk urged the crowd to “make more Italians to save Italy’s culture,” a particular focus of the Meloni government.

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Meloni has been a strong opponent of surrogacy, which is criminalized in Italy, but there was no mention of Musk’s own recent children born of surrogacy.

The owner of X (formerly called Twitter) was slightly rumpled with what could easily be argued the least stylish shoes in the mostly Italian crowd since Donald Trump’s often unkempt former top adviser Steve Bannon appeared at the conference in 2018.
Meloni sat in the front row taking photos of Musk, who she personally invited. Meloni founded the Atreju conference in 1998, named after a character in the 1984 film “The NeverEnding Story.”

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12 Jun 2024 - 02:22 pm

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Adriandom

12 Jun 2024 - 01:20 pm

Biodiversity in the UAE
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The UAE has 49 terrestrial and marine protected areas, including eight in Dubai. Accounting for over 18% of the country’s land territory and 12% of its marine and coastal territory, these protected areas are often natural reserves which include all the major ecosystems found in the region: mountain, desert, coastal and marine.
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Andrew Gardner, associate director of Biodiversity Conservation at Emirates Nature-WWF, says wildlife conservation is recognized as an “important responsibility and obligation by the UAE.” For example, the country is a signatory to multiple international conservation conventions, such as the Convention on Biological Diversity, and has helped reintroduce animals such as the Arabian oryx to the Arabian Peninsula. According to Gardner, there are now over 1,600 oryx in two of the UAE’s protected areas, and thousands more in zoos across the region.

However, rapid development and population growth across the Emirates mean that “53% of bird species, 46.7% of mammal species, 19% of reptile species, and 8% of plant species” are endangered, according to a government report.
Gardner says the Arabian wolf and striped hyena have both gone extinct from the UAE in recent decades, and a small population of Arabian leopards that lived the Hajar Mountains until the mid-1990s are now also believed to be extinct.

Karingattil points to habitat loss, climate change and overfishing as some of the major threats facing wildlife in the UAE, but one issue he thinks people should take more action against is plastic pollution.

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