32-491: The tribe Bovini or wild cattle are medium to massive bovines that are native to Eurasia , North America , and Africa . These include the enigmatic, antelope -like saola , the African and Asiatic buffalos , and a clade that consists of bison and the wild cattle of the genus Bos . Not only are they the largest members of the subfamily Bovinae , they are the largest species of their family Bovidae . The largest species
64-627: A pedicle . The earliest known wild cattle originated from Asia south of the Himalayas during the Late Miocene . This is not only supported by the fossil record but also the fact that South Asia has the highest diversity of wild cattle on planet, as well as the fact the southeast Asian saola is the basal most of the living species. At some point after the divergence of the three subtribes around 13.7 million years ago, bovins migrated into Africa from Asia where they have diversified into many species. During
96-459: A shoulder height more than 1.9 meters. The gaur can weigh up to 1,500 kilograms and attain a shoulder height up to 2.2 meters. There are some breeds of domestic cattle that can be even larger than both wild species, one of them being the Chianina , bulls of which can weigh from 1,200 to 1,500 kilograms and reach a similar height to the gaur. There are, however, several species of buffalo that live on
128-488: A single calf. Once the young are born, they will not wean until they are around six to 10 months depending on the species. Females of most species sexually mature by four years while for males it is seven years. The chromosome number varies by species, and sometimes even by subspecies, which warrants further research for taxonomic purposes. The ancestral Y chromosome was probably a small acrocentric , but evolved into several distinct characteristics. The subtribe Bubalina have
160-467: A subgenus of Bos in order to retain monophyly within Bos since both extant species of Bison are phylogenetically embedded within Bos . The specific relationships in these analyses determined that the two living bison species were each other's closest living relatives, with their closest relatives amongst Bos being the yaks based on nuclear DNA . The mitochondrial DNA for the wisent was found to contradict
192-625: A tribe merely by the presence of one of the standard suffixes: Accordingly, working within animals alone, subfamily -inae , tribe -ini, and subtribe -ina are unique suffixes to their specific taxonomic ranks. At the other extreme, working within algae alone, -eae suffixes class -phyceae , suborder -ineae , family -aceae , subfamily -oideae , and tribe -eae . The longer suffixes themselves suffixed with -eae must first be eliminated before recognizing an unfamiliar -eae designation as belonging to rank tribe. Bos See § Species . Bos (from Latin bōs : cow , ox , bull )
224-464: Is a genus of bovines , which includes, among others, wild and domestic cattle. Bos is often divided into four subgenera : Bos , Bibos , Novibos , and Poephagus , but including these last three divisions within the genus Bos without including Bison is believed to be paraphyletic by many workers on the classification of the genus since the 1980s. The genus as traditionally defined has five extant species, but this rises to eight when
256-427: Is often the young and the weak that are commonly selected by these predators. Wild cattle are very social animals, which they accumulate into large herds, with some individual sizes that can go into the hundreds. Usually these herds consisted of females and their young, although in some species there are occasionally bachelor males among them. Generally the larger and more experienced males tend to be solitary, though in
288-448: Is one bull (male) for all the cows (female). Dominance is important in the herds; calves will usually inherit their mother's position in the hierarchy . They are generally diurnal , resting in the hot part of the day and being active morning and afternoon. In areas where humans have encroached on the territory of a herd, they may turn nocturnal . Some species are also migratory, moving with food and water availability. In 2003,
320-676: Is the gaur ( Bos gaurus ), weighing up to 1,500 kg (3,300 lb). Bovins and humans have had a long and complex relationship. Five of seven species have been successfully domesticated, with one species ( cattle ) being the most successful member of their lineage. Domesticated shortly after the last ice age , there are at least 1.4 billion cattle in the world. Domestic bovines have been selectively bred for beef , dairy products and leather, and serve as working animals . However, many species of wild cattle are threatened by extinction due to habitat loss to make room for cattle farming as well as unregulated hunting. Some are already extinct like
352-492: The International Commission on Zoological Nomenclature resolved a long-standing dispute about the naming of those species (or pairs of species) of Bos that contain both wild and domesticated forms. The commission "conserved the usage of 17 specific names based on wild species, which are pre-dated by or contemporary with those based on domestic forms", confirming Bos primigenius for the aurochs and Bos gaurus for
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#1732869339700384-643: The Pliocene epoch some bovines left Africa and entered Europe, where they have evolved into hardy, cold-adapted species. During the Ice Age ancestors of the bison had colonized North America from Eurasia over the Bering Land Bridge in two waves, the first being 135,000 to 195,000 years ago and the second being 21,000 to 45,000 years ago. Below is the list of fossil species that have been described so far listed in alphabetical order that currently do not fit in any of
416-628: The aurochs , two subspecies of European bison and perhaps the kouprey . In 1821 British zoologist John Edward Gray described the family, subfamily and tribe Bovidae , Bovinae , and Bovini respectively. The word "Bovini" is the combination of the Latin prefix bos (written as bov- , which is Late Latin from bovinus ) and the suffix -ini refers to their ranking as a tribe. Boselaphini ( four-horned antelope and nilgai ) Tragelaphini (spiral-horned antelopes) Bovini ( saola , buffalos , bison , and wild cattle ) The wild cattle belong to
448-518: The acquisition of X-specific repetitive DNA sequence on their Y chromosomes; Bos has derivative metacentric Y chromosomes, and share the presence of shared derivative submetacentric X chromosomes with Bison . Below is a listing of the diploid number 2 n of selected species as follows: Bovin hybridization is most common in the subtribe Bovina , the most well known of these is the beefalo (a cross between cattle and American bison). Most of these hybrids are deliberate from humans wanting to improve
480-467: The breeding season mixed-herds occur. There is a strict hierarchy among males based on size dominance. All species of bovin are polyandrous . During the rutting period males engage in ramming against each other in order to obtain the breeding rights for females as well as territory. The gestation period occurs once the female has been inseminated from the male successfully. In most species it lasts approximately nine to ten months. They only give birth to
512-448: The domesticated varieties are counted as separate species, and ten when the closely related Bison is also included. Most but not all modern breeds of domesticated cattle (including taurine cattle and zebu ) are believed to have originated from the extinct aurochs . Others like Bali cattle and gayal are thought to have originated from South and Southeast Asian Bos species. The species are grazers, with large teeth to break up
544-462: The exception of the banteng , where males are a dark chestnut while females are just chestnut), though the male coloration hues are darker than the females. Coloration can be uniform or with some white markings, from black to brown. The wild species of bovins are found in North America , Eurasia and sub-Saharan Africa , though domesticated species or variants have a global cosmopolitan range with
576-448: The existing subtribes: Pseudorygina ( saola ) Bubalina (buffalos) Bovina ( Bison and Bos ) The majority of phylogenetic work based on ribosomal DNA , chromosomal analysis, autosomal introns and mitochondrial DNA has recovered three distinctive subtribes of Bovini: Pseudorygina (represented solely by the saola ), Bubalina (represented today by the genera Syncerus and Bubalus ), and Bovina (represented today by
608-422: The gaur. If domesticated cattle and gayal are considered separate species, they are to be named Bos taurus and Bos frontalis ; however, if they are considered part of the same species as their wild relatives, the common species are to be named Bos primigenius and Bos gaurus . During the 2010s, analysis of the complex genetics of the bovine lineages determined that the genus Bison needed to be relegated to
640-400: The genera Bison and Bos ). According to the fossil record and the molecular work, Bubalina and Bovina have diverged from one and another from a common ancestor around 13.7 million years ago in the Late Miocene . The number of taxa and their evolutionary relationships with each other has been debated, mainly as there is several evidence of ancient hybridization events that occurred among
672-812: The help of humans . With the exception of the open-plains dwelling American bison and the montane-dwelling wild yak , all species of wild cattle inhabit wooded or forested areas with some clearings . The reason is that most species require much roughage (often tall grass) in their diet and much water to drink. In addition they are less efficient eaters than smaller herbivores, as they cannot selectively forage on relatively short grass due their stiff, immobile upperlips. They commonly wallow in mud and water in swamps, especially with water buffalo . Forest-dwelling live in deciduous and tropical forests. With their large body-size, wild cattle have few natural predators aside from humans. Still they are often prey to crocodiles , big cats , spotted hyenas , dholes , and wolves . It
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#1732869339700704-438: The horns are round, while in bubalinans they are flattened. Like the spiral-horned antelopes there is extreme sexual dimorphism in bovins, though it is emphasis on the body size and the size of the horns. Males are significantly larger than the females, which most of their features are exaggerated with massive humps, large necks, and in some species the presence of a dewlap. Males and females exhibit sexual monochromatism (with
736-447: The name of a botanical tribe is "-eae". Examples include the tribes Acalypheae and Hyacintheae . The tribe Hyacintheae is divided into subtribes, including the subtribe Massoniinae. The standard ending for the name of a botanical subtribe is "-inae". In bacteriology , the form of tribe names is as in botany, e.g., Pseudomonadeae, based on the genus name Pseudomonas . An unfamiliar taxonomic rank cannot necessarily be identified as
768-486: The nuclear DNA result, and was more closely related to those of cattle, while the mitochondrial DNA of the American bison supported the nuclear DNA result of a close relationship with yaks. The discrepancy between the mitochondrial DNA of the American bison and wisent is suggested to be likely due to incomplete lineage sorting or genetic introgression into B. bonasus from other Bos species. Relationships of members of
800-437: The particular species; they can be found in prairies, rain forests, wetlands, savannah and temperate forests. Most Bos species have a lifespan of 18–25 years in the wild, with up to 36 being recorded in captivity. They have a 9–11 month gestation , depending on the species and birth one or, rarely, two young in the spring. Most species travel in small herds ranging in size from ten to thirty members. Within most herds, there
832-513: The plant material they ingest. They are ruminants , having a four-chambered stomach that allows them to break down plant material. There are about 1.3 billion domestic cattle alive today, making them one of the world's most numerous mammals. Members of this genus are currently found in Africa, Asia, Europe, parts of North America, South America and also in Oceania. Their habitats vary greatly depending on
864-463: The quality of various cattle breeds (in particular for beef production). All bovinan hybrids produce sterile males and fertile females following Haldane's rule . In addition for the agricultural purposes, bovin hybridization was used in the past to save several species such as the American bison in the past. This has caused problems for wild cattle conservation as hybrids pollute the genetic diversity of genetically-pure animals. Bovin hybridization
896-410: The standard ending for the name of a zoological tribe is "-ini". Examples include the tribes Caprini (goat-antelopes), Hominini (hominins), Bombini (bumblebees), and Thunnini (tunas). The tribe Hominini is divided into subtribes by some scientists; subtribe Hominina then comprises "humans". The standard ending for the name of a zoological subtribe is "-ina". In botany , the standard ending for
928-480: The subfamily Bovinae , which also includes spiral-horned antelope of the tribe Tragelaphini and two aberrant species of Asian antelope, four-horned antelope and nilgai , which belong to the tribe Boselaphini . The relationship between the tribes varies in research concerning their phylogeny. Most molecular research supports a Bovini and Tragelaphini subclade of Bovinae. There are also some morphological support for this, most notably both groups have horn cores with
960-516: The various islands in Indonesia are dwarf species, such as the tamaraw and the anoa , that weigh between 200 and 300 kilograms. Furthermore, not all species of bovin look like cattle, such as the saola which looks more like antelope (a fact that caused some confusion among bovid biologists). What all bovins or wild cattle do have in common is both sexes have the presence of smooth horns, instead of annulated horns seen in most other bovids. In bovinans
992-587: The various species of wild cattle, obstructing any evidence of their relationships. Below is the taxonomy of extant genera that are classified as members of the tribe Bovini (more information regarding the species taxonomy is explained more in-depth in their respective subtribe articles): Wild cattle are usually massive bovids that are stout-bodied with thick, short legs. Some species can reach impressive body-sizes such as wild water buffalo , wild yak , American bison , and European bison , which can weigh between 700 and 1,200 kilograms and these species can attain
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1024-417: Was also a major factor behind the evolution of Bovini, as some species have evidence of ancient hybridization in their genome . Tribe (biology) In biology , a tribe is a taxonomic rank above genus , but below family and subfamily . It is sometimes subdivided into subtribes . By convention, all taxa ranked above species are capitalized, including both tribe and subtribe. In zoology ,
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