一路 BBS

 找回密码
 注册
搜索
查看: 71|回复: 1

Przewalski's Horse + Modern Horse

[复制链接]
发表于 7 天前 | 显示全部楼层 |阅读模式
本帖最后由 choi 于 10-27-2024 12:40 编辑

(1) Sarah Maslin Nir, The Mule Was a Menace. But He Wasn't a Mule; A near-extinct horse's stubborn revival. New York Times, Oct 25, 2024, at page A1
https://www.nytimes.com/2024/10/ ... ses-przewalski.html
("The [four] Utah and Colorado horses recently underwent genetic testing by Texas A&M University that indicated that they are indeed Przewalski's")

Note:
(a) This report is more about where the four Przewalski's horses (mentioned in the NYT reports) came from, not about the horse itself.
(b) "Hannah Huckabay's [] stables in Aurora, Colorado * * * It had a broom-bristle mane and a wedge-shaped head * * * The Przewalski's — most commonly pronounced che-VAL-ski’s — is so rare that the horse, native to Mongolia * * * These precious few horses don't typically knock around auctions in the western United States.   'POV,' one of her daughters wrote on a TikTok video. 'You accidentally rescue a purebred Przewalski.' * * * And the horses are categorically not supposed to end up where the TikTok Takhis did: in what is known as the equine slaughter pipeline, where they stood a chance of being sold and shipped to Canada and Mexico for butchering for things like dog food and glue."
(i) On the eastern border of Denver, Aurora is the third most populous city in Colorado (2020 census ~390,000; Denver > Colorado Springs (2020 census ~480,000)> Aurora).
(ii)
(A) Przewalski's horse
https://en.wikipedia.org/wiki/Przewalski%27s_horse
("also called the takhi (Mongolian: Тахь); section 3 Characteristics: Przewalski's horse is shorter and smaller than the domestic horse + "The legs of Przewalski's horse are often faintly striped * * *  The mane stands erect and does not extend as far forward [backward?]")
There is n0o need to read the rest of this Wiki page, which is speculative in view of recent scientific advancement in DNA sequencing and analysis.
(B) Przewalski's horse
https://en.wikipedia.org/wiki/Przewalski%27s_horse
(pronunciation)
So the first syllable is not "che."
(C) There is NO need to learn more about this horse. Please read (2) instead.
(iii) knock (vi):
"3a: BUSTLE  <heard them knocking around in the kitchen>
   b: WANDER  <knocked about Europe all summer>"
https://www.merriam-webster.com/dictionary/knock
(iv) POV stands for "point of view." But what does this term mean in Tik Tok?

Elise Solé, 'POV': Why Does Your Teen Say It?  Today (NBC morning program), June 10, 2024
https://www.today.com/parents/te ... xplained-rcna155901
("The phrase 'POV' is also used in verbal conversations to share a strongly held opinion.   'It's sort of like saying, "I think" but with the emphasis of a personal endorsement or a rejection,' says [Benjamin] Morse[, a visiting lecturer in New Media at the University of Las Vegas, Nevada]. 'It’s an extra layer of intensity and certainty which says, * * * 'This is something I’ve observed from my point of view' ")
(v) categorical (adj)
https://www.etymonline.com/word/categorical

`````````````````NYT
The animal that arrived at Hannah Huckabay’s barn this past summer had been advertised as a mule, but it didn’t look like any mule she’d ever seen. She had bought it cheaply online from a livestock auction with thoughts of reselling it or putting it up for adoption, as she does with many last-chance equines at her stables in Aurora, Colo.

It had a broom-bristle mane and a wedge-shaped head, an equine silhouette more often found in a cave painting than on a ranch. “I looked at him, with my daughters, and we thought, ‘Is he a Przewalski's?’ Or however you say it?” Ms. Huckabay later said. “But that seemed very impossible — those horses are critically endangered.”

It couldn’t be, could it? The Przewalski’s — most commonly pronounced che-VAL-ski’s — is so rare that the horse, native to Mongolia, was once extinct in the wild. Its scant bloodlines are tracked by zoos, and individual animals are part of multinational conservation efforts. These precious few horses don’t typically knock around auctions in the western United States.

“POV,” one of her daughters wrote on a TikTok video. “You accidentally rescue a purebred Przewalski.”

But the seemingly impossible had actually happened twice: Soon after,  Ms. Huckabay’s daughters found a TikTok post by a woman from Utah named Kelsey Bjorklund. She had taken in an identical animal after it was given up by an auction buyer.

Why had these endangered creatures been passed around and sold as cheap horseflesh?

“You think all the money and all the resources they spend to try and breed these animals so they are not extinct and no longer critically endangered, and now you’ve got people just throwing them away,” Ms. Huckabay said. “It shouldn’t have happened to begin with.”

In a way, though, it might be a good sign for the species.

Endangered Horses Sold on the Cheap
The Przewalski's, or Takhi, was once endemic to the grasslands of Central Asia — until the herds were entirely wiped out, including by Victorian-era hunters and people seeking an exotic foal, or baby horse, as a souvenir. Many scientists believe it is the only true wild horse, never domesticated. By the 1960s, the worldwide population had dwindled to about a dozen zoo animals.

But the horses also represent a remarkable conservation story. A breeding initiative led by the Prague Zoo has helped their numbers rebound to 2,000 worldwide. A consortium of zoos has engineered the reintroduction of Przewalski's back to their native steppe, where they once more run free. Just this past summer, Czech military planes flew a handful of carefully selected Przewalski's from the Tierpark zoo in Berlin to Kazakhstan as part of a global mission to reintroduce the species to that country for the first time since they went extinct in the wild.

A few Przewalski's are in private hands around the world, but owners must have special permits, issued by state wildlife agencies or departments of environmental conservation, to keep or trade them. And the horses are categorically not supposed to end up where the TikTok Takhis did: in what is known as the equine slaughter pipeline, where they stood a chance of being sold and shipped to Canada and Mexico for butchering for things like dog food and glue.

“This is something we have never encountered before. It is very heartbreaking,” said Amanda Faliano, the keeper of the Przewalski's horse studbook for the Association of Zoos and Aquariums Species Survival Plan, which tracks the lineage and status of each Takhi in North America and who consulted on the case of the horses in the West. The Utah and Colorado horses recently underwent genetic testing by Texas A&M University that indicated that they are indeed Przewalski's.

Ms. Huckabay, 58, and her four children live on a 10-acre ranch in Aurora, just outside Denver, where Ms. Huckabay has kept horses for over two decades. She often buys unwanted horses from auctions known as “kill pens” with plans to rehabilitate, train and resell or rehome them. Ms. Huckabay said she does this at a loss to rescue animals, but many people earn money from pulling animals from the so-called slaughter pipeline, which sends between 20,000 to 25,000 unwanted horses to be rendered in Canada and Mexico a year, according to data collected by the American Horse Council.

To tell the story of the TikTok Takhis, I tracked their journey across three states, talking to horse buyers and sellers and a slew of cowboys (including one named Rooster) and unearthing an unusual incident report filed by a conscientious deputy.

It all started in February, when Ms. Huckabay paid $1,375 for the animal she saw advertised online. Utah agriculture officials had issued a brand inspection identifying it as a mule, which is a cross between a horse and a donkey. But with faint zebra striping on his legs and a rough-hewed muzzle, he immediately stood out as … something else.

Ms. Huckabay’s daughters named him Shrek, and he was as wild as all get out. “If you get too close to his face he’ll knock the daylights out of you,” she said.

She bought Shrek from the Smith Horse Company in Peabody, Kan., a horse reseller that also puts on rodeos. Its owner, Jeff Smith, told me he didn’t know what kind of horse it was when he bought the funny-looking creature for $700 from a horse dealer in Utah named Curt Anderson, who sources animals for resellers like Mr. Smith.

Mr. Anderson said he found the horse at a livestock auction in Willard, Utah, just east of the Great Salt Lake. He didn’t know what it was, either. The only person who had a hunch was Mr. Anderson’s 13-year-son, Cannon, who was looking at photos of horses on his phone as they drove out of the Willard auction.

“He said, ‘That looks like one of them Prz-whatevers,’” Mr. Anderson recalled. But the father dismissed it as impossible.

“I kind of feel lucky I bought a horse like that — I would have felt luckier if I had kept him myself,” he said.

The Willard auction is owned by Jeff Anderson, who is not related to Curt Anderson. He said the horse had been consigned to him by a cowboy everyone knows as Rooster.

Rooster’s real name is Kasey Bartlett. He told me he had bought the horse at another auction in Cedar City, in south-central Utah. A frequent customer there, he’d seen the animal pass through several times, only to be returned every time because he could not be trained. When the price dropped to just $90, Mr. Bartlett took a risk and bid.

Mr. Bartlett could barely get him on the truck to ship him home. “He was wild and mean and disrespectful,” he said. “I figured maybe somebody would want him because you don’t see something like that every day.”

Except lately he had. Mr. Bartlett had noted something else passing repeatedly through the Cedar City auction — a nearly identical mare.

A Clue in a Crooked Ear
On June 9, Kelsey Bjorklund posted a TikTok video of the strange looking mare that turned up at her barn. “Did we just have a Przewalski mare surrendered?!”

Ms. Bjorklund, 32, runs the Lazy B Equine Rescue and Sanctuary, in Clinton, Utah, a nonprofit where she and her husband, Gunnar, and their three children give refuge to unwanted horses. She had taken in the mare after a woman surrendered her, saying that the animal was untameable. Ms. Bjorklund would not identify that person, citing Lazy B’s privacy policies.

But she said the woman had bought the mare from the Cedar City auction for $35.

This animal, too, had been classified by Utah officials as a mule. (The Bjorklunds named her Fiona after they found out about Shrek.) Caroline Hargraves, a spokeswoman for the Utah Department of Agriculture and Food’s Brand Inspection Board, said the inspectors rely on information the original owner provides.

“The brand inspection program does not receive training on endangered species and is not tasked with policing activity regarding endangered species,” Ms. Hargraves said in an email.

Ms. Bjorklund noticed something about the animal right away: It had a crooked ear. A familiar one.

Two years earlier, Ms. Bjorklund said, the Utah County Sheriff’s Office had called her up in a pickle: Four utterly wild mules were running amok in a hayfield in the town of Palmyra. One mare had a crooked ear. “They appeared to look more like Zebras than mules,” Deputy Kyler Gilstrap wrote in the incident report.

I reached out to the Utah Sheriff’s Office, where Deputy Gilstrap is known for finding lost horses, including a herd of six missing colts he hunted down with a helicopter in 2023, long after their owner had given up the search. He was on leave when I called him, but the office sent me his police report.

In it, he said some detective work led him to a woman named Beverly Davis. She told him the animals were Przewalski's that had been purchased at a Missouri exotic animal auction more than a decade ago by her husband, who had since died. Deputy Gilstrap wrote that she agreed to surrender them to the sheriff’s office. After fruitlessly calling several zoos and rescues like Lazy B,  Deputy Gilstrap wrote, he found a cowboy named Ole Lindgren willing to accept them. (By then there were only three. One elderly animal died after the roundup.)

Known as the cowboy guru, Mr. Lindgren once described himself on his now-defunct website as “just a little bit ‘off.” He gave the novelty animals pasture on his ranch in Antimony, Utah, he said in an interview. But the horses kept smashing through his fences and menacing his ranch hands.

“They’re wilder than any mustang,” he said.

So when Mr. Lindgren was approached last year by a man who said he could get the horses into a zoo, he asked no questions — not even the man’s name, he said. Plus, it seemed to him that the endangered creatures were going to waste.

“Are you going to feed them in some ignominious pasture where no one is going to see them and care?” Mr. Lindgren said. He said he did not know they ended up in the auction in Cedar City.

Finding a Herd
So where did Shrek and Fiona come from? Christian Kern, the zoological director at Berlin’s Tierpark, shared his theory with me last summer as we wandered amid the zoo’s herd of Tahkis.

Mr. Kern said the international Przewalski's breeding program carefully manages the bloodlines of the original dozen horses, to best bolster the breed. But, he said, a small number of animals born in zoos are released into private hands because they are not genetically useful to that population. If those animals had babies, they might never be recorded in a studbook.

And now, the silver lining in the horses’ saga: The very existence of surplus animals like Shrek and Fiona can be seen as a sign that the conservation effort has, against all odds, worked. The herd, which once numbered only 12 on the planet, is now perhaps robust enough that not every animal must be closely tracked.

When we spoke, Mr. Kern had just returned from Kazakhstan, where he had accompanied four Przewalski's bred in Prague and Berlin aboard a Czech military plane and released them into the Altyn Dala steppe, the first to set hoof there since they were made extinct.

“We are not keeping them for ourselves here,” Mr. Kern said as an endangered foal nursed from its mother just beside him in Berlin. “We are here to give them back.”

On Oct. 12, Fiona took ill with colic and what appeared to be organ failure. Realizing she was likely in her 20s, the Bjorklunds decided to euthanize her. They loaded her body into a trailer and took her to Utah State University, where veterinary students will study her bones to learn about these rare wild horses.

“They were lost, they were forgotten, nobody wanted them,” Gunnar Bjorklund said of the Przewalski's the week of Fiona’s death. “But her last few days she was being a horse, with a mini donkey and a mini mule, and they were living their best life. She was with a herd.”
回复

使用道具 举报

 楼主| 发表于 7 天前 | 显示全部楼层
本帖最后由 choi 于 10-30-2024 10:56 编辑

(2) Gaunitz C et al, Ancient Genomes Revisit the Ancestry of domestic and Przewalski's Horses. Science, 360: 111 (2018).
https://pubmed.ncbi.nlm.nih.gov/29472442/

Note:
(a) This URL displays Abstract only. Although the Web page on the right margin shows "FREE PDF," it is untrue.
(b) About the authorship. The most important figures were two: the third one from the last (Pablo Librado: postdoc 2015-2019 at University of Copenhagen but now in Barcelona) and the last (Ludovic Orlando: last name Hispanic; born in Marseille and presently works in France).

Louis (given name)
https://en.wikipedia.org/wiki/Louis_(given_name)
German: Ludwig * * * Greek: Λουδοβίκος (Loudovíkos) * * * Latin: Ludovicus * * * Polish: Polish: Ludwik * * * )
(c) HERE is a pirated PDF copy of the article
https://www.almendron.com/blog/w ... f-modern-horses.pdf
, whose summary is at the bottom, which stated in part: "Gaunitz et al. generated 42 ancient-horse genomes. Their source samples included the Botai archaeological site in Central Asia, considered to include the earliest domesticated horses. Unexpectedly, Botai horses were the ancestors not of modern domestic horses, but rather of modern Przewalski's horses."
(i) Pay attention to Figure 1 and its center, which show Botai (represented by a green triangle) and closeby at 10 o'clock direction (Sintashta, represented by a yellow diamond).
(ii) Panel A of Fig 1 had the caption: "Archaeological sites. The age (years ago) of the genomes considered is reported to the right of each site name. The number of genomes sequenced per site is reported between parentheses if greater than one. Triangles refer to the ancient
genomes characterized here, whereas diamonds indicate those previously published [could be by them or by other researchers]."
(iii) Botai
https://en.wikipedia.org/wiki/Botai
is a village in modern-day Kazakhstan.
(iv) Sintashta
https://en.wikipedia.org/wiki/Sintashta
("an archaeological site * * * situated in the steppe just east of the southern Ural Mountains. The site is named for the adjacent Sintashta River, a tributary to the Tobol")
(d) The bottomline of this Science article is that according to DNA, modern horses did not came from Botai or Przewlaski's horse, and that the latter came from Botai.


(3)
(a) Ancient Equine Genomes Reveal Dawn of Horse Domestication. Nature, _: _ (Aug 23, 2024: online publication before print)
https://www.nature.com/articles/d41586-024-02734-6

summarizes

Librado P et al (last author is Orlando L), Widespread Horse-Based Mobility Arose Around 2200 BCE in Eurasia. Nature, 631: 819 (July 6, 2024)  
https://pubmed.ncbi.nlm.nih.gov/38843826/

Note:
(i) The summary in (3)(a) was published online but is not published in PRINT yet. There is no pirated copy in the Web.
(ii) Click the first URL (https://pubmed.ncbi.nlm.nih.gov/38843826/ ) leads to the HTML version in this website (Pubmed, which is maintained by the US government).

Click the second UR, and in the new Web page click the superlink in the upper right corner. This will lead to the free article, in PDF.

(iii) This Nature article was unusually lengthy. What you need to know is the following:
(A) Abstract: "Here we assemble a collection of 475 ancient horse genomes to assess the period when these animals were first reshaped by human agency [read: domesticated; only after domestication could humans select and mate, to change genetics of animals] in Eurasia. We find that reproductive control [meaning selection and mating for desired phenotypes] of the modern domestic lineage emerged around 2200 bce [before common era, which is the same as BC; ce is the same as AD; some people avoid BC and AD because these two terms are associated with Christianity], through close-kin mating [mating between close kin, which animals will not do in nature] and shortened generation times [to expand offspring size by mating animals earlier than they would do in the wild]. Reproductive control emerged following a severe domestication bottleneck [(modern) horse died off for reasons not mentioned in this article; when the size or number of the animals at issue is too small, close-kin mating occurs which leaves genetic evidence] starting no earlier than approximately 2700 bce, and coincided with a sudden expansion [the emphasis here is expansion of of (modern) horses, not of humans; Modern horse, of course, was spread by humans but whose identity we do not know), just NOT steppe people who spoke PIE, according to Librado P et al] across Eurasia that ultimately resulted in the replacement of nearly every local horse lineage. This expansion marked the rise of widespread horse-based mobility in human history, which refutes the commonly held narrative of large horse herds accompanying the massive migration of steppe peoples [called Yamnaya] across Europe around 3000 bce and earlier [because the timing of (modern) horse expansion was 600 years LATER than people from steppe migrated west who spoke PIE (proto Indo European language)]. Finally, we detect significantly shortened generation times [to expand horse size; but not through close-kin mating] at Botai around 3500 bce, a settlement from central Asia associated with corrals and a subsistence economy centred on horses [Botai people bred horses not to ride them, but to eat them].
(B) Main (which means methodology and experiments they did): "modern domestic horses (hereafter, DOM2) emerged in the western Eurasian steppes during the third millennium bce. The spread of DOM2 horses, alongside the development of Sintashta spoke-wheeled chariots in Asia (around 2200–1800 bce) and the apparently limited DOM2 genetic influence in Europe before that time, has indicated that long-distance horse-based mobility developed no earlier than [2,200 bce.]

Yamnaya culture
https://en.wikipedia.org/wiki/Yamnaya_culture
("It was discovered by [Russian archaeologist] Vasily Gorodtsov following his archaeological excavations near the Donets River in 1901–1903. Its name derives from its characteristic burial tradition: Я́мная (romanization: yamnaya) is a Russian adjective that means 'related to pits (yama),' as these people used to bury their dead in tumuli (kurgans) containing simple pit chambers")

If you are a biologist, you might want to read the last section of Main. The heading of the last section is "New evidence of horse husbandry at Botai."

Another bottomline (other than that modern horse replaced local horse linages 600 years after Yamnaya people moved west; according to this article, a finding contradicted with previous articles by other researchers] of this article is that horse domestications happened twice in history: 5,500 years ago in Botai, whose horse had nothing to do with modern horses; and 4,200 years ago (2,200 bce). The article did not explicitly said where the second domestication occurred. But the article hinted it was at Sintashta; read second sentence in Main quotation (these wo phenomenon, modern horse expansion and "Sintashta spoke-wheeled chariots" happened around the same time.



-------------Oct 30
All horses in the world (be they Arabian or 汗血马 (Akhal-Tekin OR Fergana horse from Fergana Valley -- or because their DNA lineage is not done yet; from 大宛, which en.wikipedia.org spells Dayuan or Tayuan) are of the same species, with 32 pairs of chromosomes. Przwalski;s horse has 33 pairs of chromosomes. In some taxonomy, modern horse and Przewalski's horse are one species, but in another, these are two species. Nobody has crossed the two, but in theory, the crossing can not produce offspring.
回复 支持 反对

使用道具 举报

您需要登录后才可以回帖 登录 | 注册

本版积分规则

快速回复 返回顶部 返回列表