Jaguar - Wikipedia. The jaguar (Panthera onca) is a big cat, a feline in the Pantheragenus, and is the only extant. Panthera species native to the Americas. The jaguar is the third- largest feline species after the tiger and the lion, and the largest in the Americas. ![]() ![]() The jaguar's present range extends from Southwestern United States and Mexico across much of Central America and south to Paraguay and northern Argentina. Though there are single cats now living within the western United States, the species has largely been extirpated from the United States since the early 2. ![]() This spotted cat most closely resembles the leopard physically, although it is usually larger and of sturdier build and its behavioral and habitat characteristics are closer to those of the tiger. While dense rainforest is its preferred habitat, the jaguar will range across a variety of forested and open terrains. Its preferred habitats are usually swamps and wooded regions, but jaguars also live in scrublands and deserts. The jaguar is notable, along with the tiger, as a feline that enjoys swimming. The jaguar is largely a solitary, opportunistic, stalk- and- ambush predator at the top of the food chain (an apex predator). ![]() This is a guest post from Chris Kresser of ChrisKresser.com. As a clinician with a special interest in fertility and pregnancy nutrition, two of the most common. Apa yang anda dan bayi anda perlukan semasa menyusui? Sesetengah kalori yang diperlukan untuk penghasilan susu badan dibekalkan oleh simpanan lemak badan semasa. It is a keystone species, playing an important role in stabilizing ecosystems and regulating the populations of the animals it hunts. The jaguar has an exceptionally powerful bite, even relative to the other big cats. Threats include loss and fragmentation of habitat. While international trade in jaguars or their parts is prohibited, the cat is still frequently killed by humans, particularly in conflicts with ranchers and farmers in South America. Although reduced, its range remains large. Given its historical distribution, the jaguar has featured prominently in the mythology of numerous indigenous American cultures, including those of the Maya and Aztec. Your Fastest Weight Reaching your ideal weight can make you fitter, faster and more resilient to wear and tear. Here's how to find that magic number and the.Etymology. The word 'jaguar' comes to English from one of the Tupi–Guarani languages, presumably the Amazonian trade language. Tupinamb. This has been said to derive from the . It derives from the Latin lyncealynx, with the letter L confused with the definite article (Italian lonza, Old Frenchl'once). DNA evidence shows the lion, tiger, leopard, jaguar, snow leopard, and clouded leopard share a common ancestor, and that this group is between six and ten million years old; the fossil record points to the emergence of Panthera just two to 3. Two million years ago, scientists believe, the jaguar and its closest relative, the similarly spotted leopard, shared a common ancestor in Asia. These jaguar ancestors then moved south into Central and South America, feeding on the deer and other grazing animals that once covered the landscape in huge herds. Original Article. Diet, Lifestyle, and the Risk of Type 2 Diabetes Mellitus in Women. Hu, M.D., JoAnn E. Manson, M.D., Meir J. Stampfer, M.D., Graham Colditz. In comparison to dogs, cats have not undergone major changes during the domestication process, as the form and behavior of the domestic cat is not radically different. Let’s just get to the basics What is HCG? HCG stands for Human Chorionic Gonadotropin. It is medically used to induce ovulation in females and to stimulate. The jaguar, Panthera onca, is the only extant New World member of the genus Panthera. DNA evidence shows the lion, tiger, leopard, jaguar, snow leopard, and clouded. Geographical barriers, such as the Amazon River, limit gene flow within the species. Geographical variation. Fossil skull of Pleistocene North American jaguar (Panthera onca augusta)The last taxonomic delineation of the jaguar subspecies was performed by Pocock in 1. However, he did not have access to sufficient specimens to critically evaluate all subspecies, and he expressed doubt about the status of several. Later consideration of his work suggested only three subspecies should be recognized. The latter preferred P. In addition, extinct subspecies P. The size of jaguars tends to increase the farther south they are located. The jaguar, a compact and well- muscled animal, is the largest cat in the New World and the largest carnivorous mammal in Central and South America. Larger males have been recorded to weigh as much as 1. The length, from the nose to the base of the tail, of the cats varies from 1. Their tails are the shortest of any big cat, at 4. The jaguar stands 6. A study of the jaguar in the Chamela- Cuixmala Biosphere Reserve on the Mexican Pacific coast, showed ranges of just about 5. A 1. 00 kg (2. 20 lb) jaguar can bite with a force of 5. However, the ventral areas are white. The spots vary over individual coats and between individual jaguars: rosettes may include one or several dots, and the shapes of the dots vary. The spots on the head and neck are generally solid, as are those on the tail, where they may merge to form a band. Jaguars also have rounder heads and shorter, stockier limbs compared to leopards. A near- black melanistic form occurs regularly. Jaguars with melanism appear entirely black, although their spots are still visible on close examination. The black morph is less common than the spotted form but, at about six percent of the population. Hence, it is being supported by selection. Some evidence indicates the melanism allele is dominant. Melanistic jaguars (or “black” jaguars) occur primarily in parts of South America, and are virtually unknown in wild populations residing in the subtropical and temperate regions of North America; they have never been documented north of Mexico’s Isthmus of Tehuantepec. The cat is believed to mate throughout the year in the wild, although births may increase when prey is plentiful. The gestation period lasts 9. The mother will not tolerate the presence of males after the birth of cubs, given a risk of infanticide; this behavior is also found in the tiger. Cubs are weaned at three months, but remain in the birth den for six months before leaving to accompany their mother on hunts. Young males are at first nomadic, jostling with their older counterparts until they succeed in claiming a territory. Typical lifespan in the wild is estimated at around 1. Adults generally meet only to court and mate (though limited noncourting socialization has been observed anecdotally. Female territories, which range from 2. Male ranges cover roughly twice as much area, varying in size with the availability of game and space, and do not overlap. The territory of a male can contain those of several females. Both sexes hunt, but males travel farther each day than females, befitting their larger territories. The jaguar may hunt during the day if game is available and is a relatively energetic feline, spending as much as 5. It is an opportunistic hunter and its diet encompasses at least 8. The jaguar is more of a dietary generalist than its Old World cousins: the American tropics have a high diversity of small animals but relatively low populations and diversity of the large ungulates which this genus favors. This indicates that jaguars might have once preyed on black bears when the species was still present in the area. Spectacled bears are also known to avoid jaguars, possibly because they may constitute occasional prey items. When attacking sea turtles, including the huge Leatherback sea turtle which weighs about 3. Local people have anecdotally reported that when hunting a pair of horses bound together, the jaguar will kill one horse and then drag it while the other horse, still living, is dragged in their wake. The cat will walk slowly down forest paths, listening for and stalking prey before rushing or ambushing. The jaguar attacks from cover and usually from a target's blind spot with a quick pounce; the species' ambushing abilities are considered nearly peerless in the animal kingdom by both indigenous people and field researchers, and are probably a product of its role as an apex predator in several different environments. The ambush may include leaping into water after prey, as a jaguar is quite capable of carrying a large kill while swimming; its strength is such that carcasses as large as a heifer can be hauled up a tree to avoid flood levels. It begins eating at the neck and chest, rather than the midsection. The heart and lungs are consumed, followed by the shoulders. However, jaguar attacks appear to be on the rise with increased human encroachment on their habitat and a decrease in prey populations. Nevertheless, even in those times, the jaguar's chief prey was the capybara, not the human, and Charles Darwin reported a saying of Native Americans that people would not have to fear the jaguar much, as long as capybaras were abundant. The jaguar is now extinct in El Salvador and Uruguay. In the early 2. 0th century, the jaguar's range extended as far north as the Grand Canyon, and as far west as Southern California. In 1. 99. 6 and from 2. Arizona photographed and documented jaguars in the southern part of the state. One of them, called 'Macho B', had been previously photographed in 1. The animal was later confirmed to be indeed the same male individual ('Macho B') that was photographed in 2. In total, its northern range has receded 1,0. Ice age fossils of the jaguar, dated between 4. United States, including some at an important site as far north as Missouri. Fossil evidence shows jaguars of up to 1. Of these habitats, the jaguar much prefers dense forest. The jaguar prefers to live by rivers, swamps, and in dense rainforest with thick cover for stalking prey. Jaguars have been found at elevations as high as 3,8. Mexico or in the Andes. The jaguar has also been termed a keystone species, as it is assumed, through controlling the population levels of prey such as herbivorous and granivorous mammals, apex felids maintain the structural integrity of forest systems. It is accepted that mid- sized prey species undergo population increases in the absence of the keystone predators, and this has been hypothesized to have cascading negative effects. Thus, the keystone predator hypothesis is not accepted by all scientists. The jaguar and the cougar, the next- largest feline of the Americas, are often sympatric (related species sharing overlapping territory) and have often been studied in conjunction. Where sympatric with the jaguar, the cougar is smaller than normal and is smaller than the local jaguars. The jaguar tends to take larger prey, usually over 2. Its broader prey niche, including its ability to take smaller prey, may give it an advantage over the jaguar in human- altered landscapes. The animal is considered Near Threatened by the International Union for Conservation of Nature (IUCN).
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