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Beisa Oryx
The East African oryx (''Oryx beisa''), also known as the beisa, is a species of medium-sized antelope from East Africa. It has two subspecies: the common beisa oryx (''Oryx beisa beisa'') found in steppe and semidesert throughout the Horn of Africa and north of the Tana River, and the fringe-eared oryx (''Oryx beisa callotis'') south of the Tana River in southern Kenya and parts of Tanzania. The species is listed as Endangered by the IUCN. In the past, some taxonomists considered it a subspecies of the gemsbok (''Oryx gazella''), but they are genetically distinct; the diploid chromosome count is 56 for the beisa and 58 for the gemsbok. Description The East African oryx stands just over a metre at the shoulder and weighs around . It has a grey coat with a white underside, separated from the grey by a stripe of black, with black stripes where the head attaches to the neck, along the nose, and from the eye to the mouth and on the forehead. The mane is small and chestnut-colo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Awash National Park
Awash National Park is a National parks in Ethiopia, national park in Ethiopia. Located at the border of Oromia state and Afar Region, Afar state, the park covers an area of 827 square kilometers, most of it lies at an altitude of 900 meters. Spanning across the southern tip of the Afar Region and the northeastern corner of the East Shewa Zone of Oromia, this park is 225 kilometers east of Addis Ababa (and a few kilometers west of Awash, Ethiopia, Awash and east of Metehara). The park is best known for its rich biodiversity and rural landscapes. the region is subject to a bimodal rainfall pattern a rainy season followed by a dominant dry season which can last up to 10 months. History The Awash National Park was established in 1966, although the act authorizing its existence was not completely passed for another three years. In establishing this park, as well as the Metehara Sugar Plantation to the south, the livelihoods of the indigenous Karayyu Oromo people have been endan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ploidy
Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Here ''sets of chromosomes'' refers to the number of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair—the form in which chromosomes naturally exist. Somatic cells, tissues, and individual organisms can be described according to the number of sets of chromosomes present (the "ploidy level"): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is often used to describe cells with three or more sets of chromosomes. Virtually all sexually reproducing organisms are made up of somatic cells that are diploid or greater, but ploidy level may vary widely between different organisms, between different tissues within the same organism, and at different stages in an o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Somalia
A mammal () is a vertebrate animal of the 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 middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors diverged in the Carboniferous Period over 300 million years ago. Around 6,640 extant species of mammals have been described and divided into 27 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, moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including cats, dogs, and seals). Mammals are the only living members of Synapsida; this clade, together with Sauropsida (reptiles and birds), constitutes the large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Ethiopia
This is a list of the mammal species recorded in Ethiopia. There are 279 mammal species in Ethiopia, of which five are critically endangered, eight are endangered, twenty-seven are vulnerable, and twelve are near threatened. The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature: Some species were assessed using an earlier set of criteria. Species assessed using this system have the following instead of near threatened and least concern categories: Order: Macroscelidea (elephant shrews) Often called sengis, the elephant shrews or jumping shrews are native to southern Africa. Their common English name derives from their elongated flexible snout and their resemblance to the true shrews. *Family: Macroscelididae (elephant-shrews) **Genus: ''Elephantulus'' *** Rufous elephant shrew, ''E. rufescens'' Order: Tubulidentata (aardvarks) The order Tubulidentata consists of a single species, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oryx
''Oryx'' ( ) is a genus consisting of four large antelope species called oryxes. Their pelage is pale with contrasting dark markings in the face and on the legs, and their long horns are almost straight and annulated. The exception is the scimitar oryx, which lacks dark markings on the legs, only has faint dark markings on the head, has an ochre neck, and has horns that are clearly decurved. All oryx species prefer near-desert conditions and can survive without water for long periods. The Arabian oryx was only saved from extinction through a captive-breeding program and reintroduction to the wild. The scimitar oryx, which was listed as extinct in the wild, also relied on a captive-breeding program for its survival.Database entry includes justification for why this species is listed as extinct in the wild. Etymology The term "oryx" comes from the Greek word ''óryx'' meaning "pickaxe", because its long and pointed horns look similar to the tool's end. The Greek plural f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perspiration
Perspiration, also known as sweat, is the fluid secreted by sweat glands in the skin of mammals. Two types of sweat glands can be found in humans: eccrine glands and Apocrine sweat gland, apocrine glands. The eccrine sweat glands are distributed over much of the body and are responsible for secreting the watery, brackish sweat most often triggered by excessive body temperature. Apocrine sweat glands are restricted to the armpits and a few other areas of the body and produce an odorless, oily, opaque secretion which then gains its characteristic odor from bacterial decomposition. In humans, sweating is primarily a means of thermoregulation, which is achieved by the water-rich secretion of the eccrine glands. Maximum sweat rates of an adult can be up to per hour or per day, but is less in children prior to puberty. Evaporation of sweat from the skin surface has a cooling effect due to evaporative cooling. Hence, in Temperature, hot weather, or when the individual's muscles hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fruit
In botany, a fruit is the seed-bearing structure in flowering plants (angiosperms) that is formed from the ovary after flowering. Fruits are the means by which angiosperms disseminate their seeds. Edible fruits in particular have long propagated using the movements of humans and other animals in a symbiotic relationship that is the means for seed dispersal for the one group and nutrition for the other; humans, and many other animals, have become dependent on fruits as a source of food. Consequently, fruits account for a substantial fraction of the world's agricultural output, and some (such as the apple and the pomegranate) have acquired extensive cultural and symbolic meanings. In common language and culinary usage, ''fruit'' normally means the seed-associated fleshy structures (or produce) of plants that typically are sweet (or sour) and edible in the raw state, such as apples, bananas, grapes, lemons, oranges, and strawberries. In botanical usage, the term ''fruit'' als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaves
A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf, but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. The leaf is an integral part of the stem system, and most leaves are flattened and have distinct upper ( adaxial) and lower ( abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax, and other features. Leaves are mostly green in color due to the presence of a compound called chlorop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
