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Saudi Gazelle
The Saudi gazelle (''Gazella saudiya'') is a ''Gazella'' species that was once native to the Arabian Peninsula. It was declared extinct in the wild in 1996, as it was last observed in the wild in 1970. The Saudi gazelle was officially declared extinct on the IUCN Red List in 2008. Taxonomy ''Gazella gazella saudiya'' was the scientific name proposed by Douglas Carruthers and Ernst Schwarz (zoologist), Ernst Schwarz in 1939. They described the skull and head skin of a male gazelle specimen collected at an elevation of near Dhlam in Saudi Arabia. Terence Morrison-Scott recognised it as a distinct species ''Gazella saudiya'' in 1939. Colin Groves examined horn shapes and sizes of zoological specimens of gazelles and recognised the Saudi gazelle as a subspecies of the Dorcas gazelle ''Gazella dorcas saudiya'' in 1969. Phylogenetic analysis of museum samples of the Saudi gazelle revealed that it is distinct from and a sister taxon of the Dorcas gazelle. Distribution and habitat The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas Carruthers
Alexander Douglas Mitchell Carruthers (4 October 1882 – 23 May 1962) was an explorer and naturalist of some repute. He was the son of the Reverend William Mitchell Carruthers of Holbrook, Suffolk, Holbrook, and was an explorer in the Middle East in the early 1900s. Biography Carruthers was born in London and was educated at Haileybury College and Trinity College, Cambridge. He worked as secretary to a number of people active at the Royal Geographical Society, and underwent training in land survey work, also becoming an expert taxidermist. Carruthers took part in the The British Museum Ruwenzori expeditions#British Museum Ruwenzori expedition 1905-1906, British Museum Ruwenzori expedition to the Congo Free State, Congo in 1905-1906 from where he sent home specimens of birds and mammals. In 1910 he joined John H. Miller and Morgan Philips Price in an expedition through the desert of Outer Mongolia, publishing two volumes on ''Unknown Mongolia'' in 1913. In 1915, Carruthers ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogenetic
In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical data and observed heritable traits of DNA sequences, protein amino acid sequences, and morphology. The results are a phylogenetic tree—a diagram depicting the hypothetical relationships among the organisms, reflecting their inferred evolutionary history. The tips of a phylogenetic tree represent the observed entities, which can be living taxa or fossils. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the taxa represented on the tree. An unrooted tree diagram (a network) makes no assumption about directionality of character state transformation, and does not show the origin or "root" of the taxa in question. In addition to their use for inferring phylogenetic pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct Mammals Of Asia
Extinction is the termination of an organism by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. As a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, and mammoths. Through evolution, species arise through the process of speciation. Species become extinct when they are no longer able to survive in changing conditions or against supe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of The Arabian Peninsula
A mammal () is a vertebrate animal of the Class (biology), class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three Evolution of mammalian auditory ossicles, middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors Genetic divergence, diverged in the Carboniferous Period over 300 million years ago. Around 6,640 Neontology#Extant taxon, extant species of mammals have been described and divided into 27 Order (biology), orders. The study of mammals is called mammalogy. The largest orders of mammals, by number of species, are the rodents, bats, and eulipotyphlans (including hedgehogs, Mole (animal), moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the Artiodactyl, even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including Felidae, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antelopes Of Asia
The term antelope refers to numerous extant or recently extinct species of the ruminant artiodactyl family Bovidae that are indigenous to most of Africa, India, the Middle East, Central Asia, and a small area of Eastern Europe. Antelopes do not form a monophyletic group, as some antelopes are more closely related to other bovid groups, such as bovines, goats, and sheep, than to other antelopes. A stricter grouping, known as the true antelopes, includes only the genera ''Gazella'', '' Nanger'', '' Eudorcas'', and '' Antilope''. One North American mammal, the pronghorn or "pronghorn antelope", is colloquially referred to as the "American antelope", despite the fact that it belongs to a completely different family (Antilocapridae) than the true Old-World antelopes; pronghorn are the sole extant member of an extinct prehistoric lineage that once included many unique species. Although antelope are sometimes referred to, and easily misidentified as, "deer" ( cervids), true deer ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arabian Gazelle
The Arabian gazelle ''(Gazella arabica)'' is a species of gazelle from the Arabian Peninsula. There are approximately 5,000 – 7,000 mature individuals in the wild.IUCN SSC Antelope Specialist Group. 2017. ''Gazella arabica''. ''The IUCN Red List of Threatened Species'' 2017: e.T117582065A88018124. . Accessed on 12 March 2023. It is now synonymous with ''Gazella erlangeri'', commonly known as Erlanger's gazelle or Neumann's gazelle. Taxonomy Until recently, it was only known from a single lectotype specimen mistakenly thought to have been collected on the Farasan Islands in the Red Sea in 1825. A 2013 genetic study of the lectotype specimen revealed that skull and skin do not stem from the same individual but belong to two distinct lineages of the mountain gazelle (''Gazella gazella''), necessitating restriction of the lectotype to the skin to conserve nomenclatural stability. A later study formalized the use of ''Gazella arabica'' for the Arabian lineage of the mountain gazelle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arabian Ostrich
The Arabian ostrich (''Struthio camelus syriacus''), Syrian ostrich, or Middle Eastern ostrich is an extinct subspecies of the ostrich that lived on the Arabian Peninsula and in the Near East until the mid-20th century. Distribution The Arabian ostrich's range seems to have been continuous in prehistoric times, but with the drying-up of the Arabian Peninsula, it disappeared from the inhospitable areas of the Arabian Desert, such as the Rub' al Khali. In historic times, the bird seems to have occurred in two discrete relict populations: a smaller one in the southeast of the Arabian Peninsula and a larger one in the area where today the borders of Saudi Arabia, Jordan, Iraq and Syria meet. Once common in the Negev, ostriches became extinct in the region in the 1920s as a result of widespread hunting. It was also present in Qatar, the United Arab Emirates (in prehistoric times), Oman, and Kuwait. Eggshells of Arabian ostriches have been found on Bahrain, though this is likely n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera. Hybrids are not always intermediates between their parents such as in blending inheritance (a now discredited theory in modern genetics by particulate inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridization, which include genetic and morph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saudi Arabia
Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in West Asia. Located in the centre of the Middle East, it covers the bulk of the Arabian Peninsula and has a land area of about , making it the List of Asian countries by area, fifth-largest country in Asia, the largest in the Middle East, and the List of countries and dependencies by area, 12th-largest in the world. It is bordered by the Red Sea to the west; Jordan, Iraq, and Kuwait to the north; the Persian Gulf, Bahrain, Qatar and the United Arab Emirates to the east; Oman to the southeast; and Yemen to Saudi Arabia–Yemen border, the south. The Gulf of Aqaba in the northwest separates Saudi Arabia from Egypt and Israel. Saudi Arabia is the only country with a coastline along both the Red Sea and the Persian Gulf, and most of Geography of Saudi Arabia, its terrain consists of Arabian Desert, arid desert, lowland, steppe, and List of mountains in Saudi Arabia, mountains. The capital and List of cities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yemen
Yemen, officially the Republic of Yemen, is a country in West Asia. Located in South Arabia, southern Arabia, it borders Saudi Arabia to Saudi Arabia–Yemen border, the north, Oman to Oman–Yemen border, the northeast, the south-eastern part of the Arabian Sea to the east, the Gulf of Aden to the south, and the Red Sea to the west, sharing maritime boundary, maritime borders with Djibouti, Eritrea, and Somalia across the Horn of Africa. Covering roughly 455,503 square kilometres (175,871 square miles), with a coastline of approximately , Yemen is the second largest country on the Arabian Peninsula. Sanaa is its constitutional capital and largest city. Yemen's estimated population is 34.7 million, mostly Arabs, Arab Muslims. It is a member of the Arab League, the United Nations, the Non-Aligned Movement and the Organisation of Islamic Cooperation. Owing to its geographic location, Yemen has been at the crossroads of many civilisations for over 7,000 years. In 1200 BCE, the Sab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuwait
Kuwait, officially the State of Kuwait, is a country in West Asia and the geopolitical region known as the Middle East. It is situated in the northern edge of the Arabian Peninsula at the head of the Persian Gulf, bordering Iraq to Iraq–Kuwait border, the north and Saudi Arabia to Kuwait–Saudi Arabia border, the south. With a coastline of approximately , Kuwait also shares a maritime border with Iran, across the Persian Gulf. Kuwait is a city-state, most of the country's population reside in the urban area, urban agglomeration of Kuwait City, the capital and largest city. , Kuwait has a population of 4.82 million, of which 1.53 million are Kuwaiti nationality law, Kuwaiti citizens while the remaining 3.29 million are Expatriates in Kuwait, foreign nationals from over 100 countries. Kuwait has the world's third List of sovereign states by immigrant and emigrant population, largest number of foreign nationals as a percentage of the population, where its citizens make up less th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia
''Acacia'', commonly known as wattles or acacias, is a genus of about of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa, South America, and Australasia, but is now reserved for species mainly from Australia, with others from New Guinea, Southeast Asia, and the Indian Ocean. The genus name is Neo-Latin, borrowed from Koine Greek (), a term used in antiquity to describe a preparation extracted from '' Vachellia nilotica'', the original type species. Several species of ''Acacia'' have been introduced to various parts of the world, and two million hectares of commercial plantations have been established. Description Plants in the genus ''Acacia'' are shrubs or trees with bipinnate leaves, the mature leaves sometimes reduced to phyllodes or rarely absent. There are 2 small stipules at the base of the leaf, but sometimes fall off as the leaf matures. The flowers are borne in spik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
