Where did Horses Originate from

How did the horses come from?

The Y chromosome seems to indicate a very narrow origin of the domestic horse. Wilde horses as indigenous animals of north America Aren't game horses really "wild", as a local breed in North America, or are they "wild weeds" - barns that are far away in genetic terms from their forefathers? Therefore, the issue is whether to consider Equus Caballus, the contemporary equine animal, as a domestic animal or not. North America often has government authorities that deal with the cultivation of animals that consider it to be non-native or even alien, such as the National Park Service, the US Fish and Wildlife Service and the Bureau of Land Development.

For many of these bodies, the statutory mandates are to conserve indigenous fauna and avoid non-indigenous animals having damaging impacts on the overall environment of the country. When the notion that game horses are indeed indigenous animals would be endangered, many contemporary managerial strategies could be called into question. Thus, the justification for the study of this sentence, that the animal is a domestic or non-native breed, is significant.

Equus, which comprises horses, donkeys and zebra, is the only remaining species in a once multifaceted horse kingdom of 27 species. Exact date of formation of the Equus species is not known, but evidences prove the distribution of Equus from North America to Eurasia about 2-3 million years ago and a possible source of about 3.4-3.

After this initial migration there were several failures in the United States, with further migration to Asia (presumably via the Bering Land Bridge) and returning migration to the Americas over the years. Probably the last death of the Americans took place between 13,000 and 11,000 years (Fazio 1995), although a more recent death of horses was proposed.

Dr. Ross MacPhee, curator of mammal research at the American Museum of Natural History, and fellow scientists have estimated the history of wool amphorae and horses in North America to date back as far as 7,600 years. Without the prior westwalk over the 2 Bering Land Bridge, to the northwest of Russia (Siberia) and to Asia, the horses would have died out completely.

Equus did, however, survive and expanded to all parts of the world except Australia and Antarctica. 1493, on Columbus' second trip to America, Hispanic horses, representative of E. Caballus, were first returned to North America on the Virgin Islands, and in 1519 they were re-introduced on the mainland, in present-day Mexico, from where, after fleeing from their occupants or by theft, they beamed into the entire American lowlands (Fazio 1995).

Opponents of the notion that the US wild is an indigenous plant claim that the E. Caballus (or caballoid) specie imported in 1519 was different from that which vanished between 13,000 and 11,000 years earlier. Neither palaeontological nor genetic research, however, supports the claim that the contemporary equine is not indigenous to Northern America.

Equus, a one-ophyletic cabon, is first recorded in the US fossils balance about four million years ago by E. simlicidens, and this type is directly derived from the later white can type about three million years ago (Azaroli and Voorhies 1990). In Azzaroli ( 1992 ) it was thought, again based on fossils, that E. simlicidens produced the later Pliocene E. Idahoensis and that this type in turn produced the first Cape loid horses in two million years ago in America.

While some emigrated to Asia about a million years ago, others, such as E. neobrarensis, stayed in North America. Specifically, in North America, the diversity of E. Caballus in different ecomorph types (breeds) comprised E. Kaballus Mexico or the African Horse (also known as E. Kaballus Hay or Quinn Midlandensis) (Hibbard 1955).

Today we would recognise these last two horses as races, but in the area of the wild animals the concept subtypes is used. Ecomorphotypes are different phenomenotypic or physiological properties within the same type due to gene expression within discreet environments. North America seems to have lower molars and lower jaws insulated from layers of the Ironingtonian period as morphological E. caballus.

During most of the Pleistocene epoch in North America, the most common Equus strains were not cabballs but other strains (species) that resembled zebra, hemion and possibly donkey (McGrew 1944; Quinn, 1957). Originally scarce in North America, taballoid horses were associated with shortenoid horses (perhaps precursors of the ancestors, but certainly of different species), but a million to 500,000 years ago taballoid horses substituted for shortenoid horses due to climate preference and changes in environmental recesses (Forstén 1988).

Later in the Pleistocene, the northern taxes that can clearly be attributed to E. caballus are E. caballus aliaskae (Azzaroli 1995) and E. caballus meexicanus (Winans 1989 - under the name laurentius). E. neobrarensis (Azzaroli 1995) is said to be the source of both species. On the basis of numerous palaeontological observations, it is assumed that E. caballus was first discovered about two million years ago in Northern America.

Determining speciation diversity by means of phenotypes, however, is at least a modest matter of opinion and often does not take into consideration the different ecomorphic types within a given specie described above. Whereas previous cabonomes tried to address the subject matter of the choice of character, which in their opinion would describe groups, genus and species appropriately, these considerations lacked accuracy.

Nevertheless, more palaeontological evidence strongly points to the origins of E. Caballus about one to two million years ago. Numerous gene analysis performed at the San Diego Zoo's Centre for Reproduction of Endangered Species, using chromosomal aberrations (Benirschke et al. 1965) and Mitochondrial Genetics (George and Ryder 1986), indicate a significant gene diversity between different types of E. Caballus already 200,000-300,000 years ago.

However, these sketches do not talk about the sources of E. caballus itself, but they suggest a large genetical diversity among the members of E. caballus 200,000 to 300,000 years ago. Thus the source had to be sooner, but at least long before the extinction of the equine species in North America 13,000-11,000 years ago.

The relatively new (30-year-old) discipline of biomolecular science, which uses the mitochondrial genetic makeup of genes, has recently shown that the human equine, E. caballus, is inherently equal to E. sambei, a fossilised animal representing the youngest equus in North America before it became extinct. E. caballus is not only genetically equal to E. llambei, but there is also no proof of the origins of E. caballus in countries other than North America (Forstén 1992).

After the work of scientists from the University of Uppsala of the Department of Evolutionary Biology (Forstén 1992), the date of formation of E. Caballus, on the basis of alteration ratios for mitochondrial genes, was determined about 1.7 million years ago in North America. The Vilà et al. (2001) have shown that the origins of native equine lines have been extreme in the course of history and geographical development, and support the presence of the Kabballoid in North America before its extinction, confirming the work of Benirschke et al. (1965), George and Ryder (1995) and Hibbard (1955).

Krüger et al. (2005) confirm the work of Forstén (1992) in another survey using µsatellite information, but give greater scope for the development of the Kabballoid Horses 0.86 to 2.3 million years ago. However, 860,000 years ago the cabinloid still accommodated this in North America.

The work of Hofreiter et al (2001), who examined the genetic of the so-called E. sambei from the Peruvian frost of Alaska, found that the variations were within those of contemporary horses, meaning that E. sambei was indeed E. caballus, hereditary. Horses were domestically farmed before their reintroduction, which means little from a biologic point of view.

It is the same kind that has its origin here, and whether they have been or have not been domestized is completely unimportant. Dominication has changed very few biologies, and we can see this in the phenomena of "going wild", where young horses return to old behaviour models. In their article on behaviour pattern and communications in the Pryor Mountain game horses, Feist and McCullough (1976) named this "social preservation".

Re-emergence of primitive behavior similar to that of the flat zebra showed it the shallow depth of the domestication of horses. E. Przewalskii (Mongolian wildhorse ) vanished from Mongolia a hundred years ago. They were then freed in the 90s and are now repopulating their homeland in Mongolia. Or are they a re-introduced indigenous or not?

What is the discrepancy between them and E. Caballus in North America, besides the timeframe and the level of imprisonment? Non-indigenous, savage and fanciful names given by the agency are not only an expression of their lack of understanding of contemporary sciences, but also an expression of their wish to keep old ways of thought intact in order to keep living the struggle between a kind (wild horse) that no longer has economical value (by law) and the economical value of farm animals.

The origin pedigree of young horses would legally classify them in a new class for managerial purposes. An animal world imbedded in savagery, old behavioural models and the moral and biological characteristics of a delicate predator type, they can eventually be dismissed from the appeal "Livestock - Gone-loose". Wilde horses as indigenous North American animal world.

Equus in Europe. pp. Quaternary Equus in North America. Equus in North America: It'?s the white can. Distinction between Equus caballus and Equus przewalskii Polliakoff. Founding of the Pryor Mountain Wild Horse Range (1968) and development of the Federal Wild Horse Protection by 7 1971,? PhD thesis, Texas A&M University, College Station, p. 21.

FEIST, J.D. and D.R. McCullough, Behavioral patterns and communication in wild horses, Z. Tierpsychol. Mesopleistocene substitution of congenital horses by caballoide horses with environmental effects. and the development of Equus: Minimonochondrial development of genes in the Equus family. Plestocene vertebrate from the Becarra Superior Formation, Valley of Tequixquiac, Mexico, with references to other Plestocene molds.

Articles from the Museum of Paleontology, University of Michigan, 12:47-96. Photogenetic analyses and speciation of single equidae using satellite microdata. Early pleistocene (bare) Nebraska wildlife. Widely spread origin of the local equestrian lines. Evolutions, systematic and pylogeography of Pleiistocene horses in the New World: a holistic view. This is a quantified survey of US fossils of the Equus genera. pp. 262-297, in:

Mr Jay F. Kirkpatrick, Direktor des Science and Conservation Center, ZooMontana, Billings, promovierte in Reproduktionsphysiologie am College of Veterinary Medicine der Cornell University. Fazio, Research Fellow, The Science and Conservation Center, ZooMontana, Billings, teaches a B.S. in Agricultural (Animal Welfare / Biology) from Cornell University and an M.S. and Ph.D. in Environment Studies from the University of Wyoming and Texas A&M University, College Station, respectively.

Your doctoral thesis was a story of genesis of the Pryor Mountain Wild Horse Range, Montana/Wyoming.

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