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Yonaguni (horse)
The Yonaguni or is a criticallyendangered Japanese breed of small horse. It is native to Yonaguni Island, in the Yaeyama Islands in south-western Japan, close to Taiwan. It is one of eight horse breeds native to Japan. History In 1968 there were 210 Yonaguni horses. By the early 1980s, the number had fallen to little more than fifty. Numbers subsequently recovered slightly; 85 head were recorded in 2008. The conservation status of the breed was listed as "critical" by the FAO in 2007. In 2003, genetic analysis using microsatellite data found the Yonaguni to be most closely related to the Miyako and Tokara smallisland breeds, and less closely related to various Mongolian horse breeds than were the Dosanko and Kiso breeds of the main islands of Japan. Characteristics Like the other Japanese island breeds, the Yonaguni is small. Average height at the withers The withers is the ridge between the shoulder blades of an animal, typically a quadruped. In many specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yonaguni Island
, one of the Yaeyama Islands, is the westernmost inhabited island of Japan, lying from the east coast of Taiwan, between the East China Sea and the Pacific Ocean proper. The island is administered as the town of Yonaguni, Yaeyama Gun, Okinawa, and there are three settlements: Sonai, Kubura, and Higawa. History Early human migration from Taiwan to Yonaguni island has long been the subject of scholarly debate. In 2019, a team of Japanese and Taiwanese researchers succeeded in completing the two-day journey from Cape Wushibi in Taitung County to Yonaguni island along the Kuroshio current in a dugout canoe based on technology and materials from 30,000 years ago. Otherwise, the early history of Yonaguni remains vague. The first written record that ever mentions the island is a 1477 Korean document (''Chosen Hyōryūmin no Yaeyama kenbunroku''), an account of several fishermen from the current Jeju Province who drifted there. A legendary female leader, San’ai Isoba, is said to ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Horse Breeds
This article is a list of horse and pony breeds with articles on Wikipedia, and also includes terms for types of horse that are not necessarily standardized breeds but are often labeled as breeds. While there is no scientifically accepted definition of the term "breed",The state of the world's animal genetic resources for food and agriculture. Barbara Rischkowsky and Dafydd Pilling. Commission on Genetic Resources for Food and Agriculture. 2007 a breed is generally defined as having distinct true-breeding characteristics over a number of generations. Its members may be called "purebred". In most cases, bloodlines of horse breeds are recorded with a breed registry. The concept is somewhat flexible in horses, as open stud books are created for recording pedigrees of horse breeds that are not yet fully true-breeding. Registries also are considered the authority as to whether a given breed is listed as a "horse" or a "pony". There are also a number of "color breed", sport horse, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horse
The horse (''Equus ferus caballus'') is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of ''Equus ferus''. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, ''Eohippus'', into the large, single-toed animal of today. Humans began domesticating horses around 4000 BCE, and their domestication is believed to have been widespread by 3000 BCE. Horses in the subspecies ''caballus'' are domesticated, although some domesticated populations live in the wild as feral horses. These feral populations are not true wild horses, as this term is used to describe horses that have never been domesticated. There is an extensive, specialized vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colors, markings, breeds, locomotion, and behavior. Horses are adapted to run, allowing them to quickly escape predators, and po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yaeyama Islands
The Yaeyama Islands (八重山列島 ''Yaeyama-rettō'', also 八重山諸島 ''Yaeyama-shotō'', Yaeyama: ''Yaima'', Yonaguni: ''Daama'', Okinawan: ''Yeema'', Northern Ryukyuan: ''Yapema'') are an archipelago in the southwest of Okinawa Prefecture, Japan, and cover . The islands are located southwest of the Miyako Islands, part of the Ryukyu Islands archipelago. The Yaeyama Islands are the remotest part of Japan from the main islands and contain Japan's most southern (Hateruma) and most western (Yonaguni) inhabited islands. The city of Ishigaki serves as the political, cultural, and economic center of the Yaeyama Islands. Natural history The Yaeyama Islands are home to numerous species of subtropical and tropical plants, and mangrove forests. The islands produce sugarcane and pineapples. Coral reefs around the islands are ideal habitats for dolphins, sea turtles, and larger fish such as manta rays and whale sharks. Before being wiped out by humans, whales and dugongs wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conservation Status
The conservation status of a group of organisms (for instance, a species) indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status exist and are in use at international, multi-country, national and local levels as well as for consumer use. International systems IUCN Red List of Threatened Species The IUCN Red List of Threatened Species is the best known worldwide conservation status listing and ranking system. Species are classified by the IUCN Red List into nine groups set through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmentation. Also included are species that have gone ext ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetic Analysis
Genetic analysis is the overall process of studying and researching in fields of science that involve genetics and molecular biology. There are a number of applications that are developed from this research, and these are also considered parts of the process. The base system of analysis revolves around general genetics. Basic studies include identification of genes and inherited disorders. This research has been conducted for centuries on both a large-scale physical observation basis and on a more microscopic scale. Genetic analysis can be used generally to describe methods both used in and resulting from the sciences of genetics and molecular biology, or to applications resulting from this research. Genetic analysis may be done to identify genetic/inherited disorders and also to make a differential diagnosis in certain somatic diseases such as cancer. Genetic analyses of cancer include detection of mutations, fusion genes, and DNA copy number changes. History of genetic analysi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsatellite
A microsatellite is a tract of repetitive DNA in which certain DNA motifs (ranging in length from one to six or more base pairs) are repeated, typically 5–50 times. Microsatellites occur at thousands of locations within an organism's genome. They have a higher mutation rate than other areas of DNA leading to high genetic diversity. Microsatellites are often referred to as short tandem repeats (STRs) by forensic geneticists and in genetic genealogy, or as simple sequence repeats (SSRs) by plant geneticists. Microsatellites and their longer cousins, the minisatellites, together are classified as VNTR (variable number of tandem repeats) DNA. The name "satellite" DNA refers to the early observation that centrifugation of genomic DNA in a test tube separates a prominent layer of bulk DNA from accompanying "satellite" layers of repetitive DNA. They are widely used for DNA profiling in cancer diagnosis, in kinship analysis (especially paternity testing) and in forensic identific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetic Distance
Genetic distance is a measure of the genetic divergence between species or between populations within a species, whether the distance measures time from common ancestor or degree of differentiation. Populations with many similar alleles have small genetic distances. This indicates that they are closely related and have a recent common ancestor. Genetic distance is useful for reconstructing the history of populations, such as the multiple human expansions out of Africa. It is also used for understanding the origin of biodiversity. For example, the genetic distances between different breeds of domesticated animals are often investigated in order to determine which breeds should be protected to maintain genetic diversity. Biological foundation In the genome of an organism, each gene is located at a specific place called the locus for that gene. Allelic variations at these loci cause phenotypic variation within species (e.g. hair colour, eye colour). However, most alleles do not hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miyako Pony
The is a rare breed of horse originating from Miyako Island, in Japan. The Miyako is one of eight breeds considered native to Japan. Miyako Island in Okinawa Prefecture has been known as a horse breeding area for centuries, and small horses have always been found in this area. During and after World War II they were crossed with larger stallions to increase their size to around 14 hands for farming purposes. They are mostly used as riding horses and for light draft work. Around 1955, population of the breed peaked at around 10,000 head, but with the increase of motorization they began to decline. Since 1975 great efforts have been made to preserve the remaining few Miyako horses, as the breed is of great antiquity. Only seven head were living as of 1983, the population grew to 25 horses by 1993, but had dropped back to 19 by 2001. The breed is protected by the Japanese government with its status listed as "Critical-Maintained." Miyako horses are mostly bay or dun in colou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tokara Pony
The (also known as the Kagoshima horse) is a Japanese horse native to the Tokara Islands, a group of islands in Kagoshima Prefecture at the southwestern tip of the island of Kyushu. Its height is about . Its coat color is predominantly seal brown. The Tokara has a good tolerance for heat and is used for agriculture, riding and sugar cane processing. History In 1952 the horses were discovered on Takarajima by Shigeyuki Hayashida, a professor of Kagoshima University, and designated the Tokara horse. It was theorized that the horses were brought to Takarajima from Kikaijima around 1900. In 1953, the Tokara horse was designated a natural monument of Kagoshima Prefecture. When Professor Hayashida first discovered the horses, he counted 43. Their numbers gradually declined during the 1960s because of agricultural mechanization, however, and it was difficult to monitor the population on Takarajima. Therefore, some of the horses were transferred to the Mt. Kaimon Natural Park and I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongolian (horse)
The Mongol horse ( Mongolian Адуу, ''aduu'': "horse" or ''mori''; or as a herd, ''ado'') is the native horse breed of Mongolia. The breed is purported to be largely unchanged since the time of Genghis Khan. Nomads living in the traditional Mongol fashion still hold more than 3 million animals, which outnumber the country's human population. In Mongolia, the horses live outdoors all year, dealing with temperatures from in summer down to in winter, and they graze and search for food on their own. The mare's milk is processed into the national beverage '' airag.'' Some animals are slaughtered for meat. Other than that, they serve as riding and transport animals; they are used both for the daily work of the nomads and in horse racing. Mongol horses were a key factor supporting the 13th-century conquests of the Mongol Empire. Characteristics Mongol horses are of a stocky build, with relatively short but strong legs and a large head. They weigh about 500 to 600 lbs. an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dosanko
The , also known as the and , is one of the eight extant indigenous horse breeds of Japan, and the only one of the eight not critically endangered. It originated on the island of Hokkaido, in the far north of the country, and is found particularly along the Pacific (eastern) coast of the island. The people of Hokkaido may be nicknamed "Dosanko" after the horses. History The Dosanko is thought to derive from horses brought to the island from the Tōhoku region of north-eastern Honshu in the late Tokugawa period (1603–1868), and abandoned there. Total numbers of the breed grew from 1180 in 1973 to almost 3000 head in the early 1990s, but by the year 2000 had fallen to 1950 horses. A herd book was established in 1979. Hokkaido University , or , is a Japanese national university in Sapporo, Hokkaido. It was the fifth Imperial University in Japan, which were established to be the nation's finest institutions of higher education or research. Hokkaido University is co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
