tiger
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| ===== I. TIGER EVOLUTION ===== | ===== I. TIGER EVOLUTION ===== | ||
| Tiger fossils have been found in the countries of Indonesia, Mongolia, China, Japan, and Italy – and from fossil evidence it would appear that tigers have existed on Earth for more than 2 million years. A fossil species considered most closely related to the tiger, //Panthera zdanski//, constitutes the oldest complete big cat skull ever found – and may have appeared around the same time as the tiger. The ‘Longdan Tiger’, as it is sometimes called, lived in the Gansu Province in China from 2.55 million years ago, before disappearing 390,000 years later. It was about the size of a large jaguar, at 75 centimetres at shoulder. Today, the closest living relative of the tiger is believed to be the snow leopard, which it may have diverged from 3 million years ago. | Tiger fossils have been found in the countries of Indonesia, Mongolia, China, Japan, and Italy – and from fossil evidence it would appear that tigers have existed on Earth for more than 2 million years. A fossil species considered most closely related to the tiger, //Panthera zdanski//, constitutes the oldest complete big cat skull ever found – and may have appeared around the same time as the tiger. The ‘Longdan Tiger’, as it is sometimes called, lived in the Gansu Province in China from 2.55 million years ago, before disappearing 390,000 years later. It was about the size of a large jaguar, at 75 centimetres at shoulder. Today, the closest living relative of the tiger is believed to be the snow leopard, which it may have diverged from 3 million years ago. | ||
| + | ===== II. TIGER MORPHOLOGY ===== | ||
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| The largest of any cat at up to 300 kilogrammes and up to 110 cm at shoulder, the skeletons of tigers and lions are so similar that even scientists have trouble telling the two apart without advanced investigation. It is only in living animals that many differences are clearly visible, but skeletons do show a few subtle differences as well. The skull of the tiger is slightly shorter than that of the lion – and tigers also have a slightly more narrow snout. The tail of the tiger is also slightly shorter than that of the lion. But it is pelage where differences are most obvious – tigers are orange or yellowish in colour, covered with numerous thick, vertical, black stripes. On the face the stripes circle around the shape of the face, and on the body they can circle almost the entire body, or end abruptly. Tiger stripes occur both from the bottom of the tiger as well as from the dorsal. The stripes also encircle the tail, until the very tip where the black markings form a veritable ‘territory’. The underside of the tiger, disregarding the black stripes, is coloured white. Stripes are less prominent on the legs when viewed face on, and side-on closer to the paw. Stripes are individual amongst tigers, and scientists who work with wild tigers in the field, typically done through camera-trapping, | The largest of any cat at up to 300 kilogrammes and up to 110 cm at shoulder, the skeletons of tigers and lions are so similar that even scientists have trouble telling the two apart without advanced investigation. It is only in living animals that many differences are clearly visible, but skeletons do show a few subtle differences as well. The skull of the tiger is slightly shorter than that of the lion – and tigers also have a slightly more narrow snout. The tail of the tiger is also slightly shorter than that of the lion. But it is pelage where differences are most obvious – tigers are orange or yellowish in colour, covered with numerous thick, vertical, black stripes. On the face the stripes circle around the shape of the face, and on the body they can circle almost the entire body, or end abruptly. Tiger stripes occur both from the bottom of the tiger as well as from the dorsal. The stripes also encircle the tail, until the very tip where the black markings form a veritable ‘territory’. The underside of the tiger, disregarding the black stripes, is coloured white. Stripes are less prominent on the legs when viewed face on, and side-on closer to the paw. Stripes are individual amongst tigers, and scientists who work with wild tigers in the field, typically done through camera-trapping, | ||
| - | ===== II. TIGER MORPHOLOGY ===== | ||
| Like all big cats, tigers are muscular, with the tail comprising a significant amount of the body’s length [up to 4 metres]. Some tigers are white in colouration – white tigers, a genetic mutation of the Bengal tiger, have been observed since the 16th century – and in the 20th century they became increasingly popular amongst zoos and circuses, and also amongst hunters. All white tigers living in captivity have genetic influence from a single male, ‘Mohan’, | Like all big cats, tigers are muscular, with the tail comprising a significant amount of the body’s length [up to 4 metres]. Some tigers are white in colouration – white tigers, a genetic mutation of the Bengal tiger, have been observed since the 16th century – and in the 20th century they became increasingly popular amongst zoos and circuses, and also amongst hunters. All white tigers living in captivity have genetic influence from a single male, ‘Mohan’, | ||
| The texture of tiger’s fur is variable based on where the tiger is found – Sumatran tigers of the jungle which has a constant of 25 degrees Celsius have relatively thin fur, and have a more muscular consistency. They also have the most prominent facial ‘ruff’. They are also the smallest race of tiger – males about 120 kilogrammes and 2 metres in length, and females about 90 kilogrammes, | The texture of tiger’s fur is variable based on where the tiger is found – Sumatran tigers of the jungle which has a constant of 25 degrees Celsius have relatively thin fur, and have a more muscular consistency. They also have the most prominent facial ‘ruff’. They are also the smallest race of tiger – males about 120 kilogrammes and 2 metres in length, and females about 90 kilogrammes, | ||
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| Tigers, like other big cats, have 4 large toes [and one smaller toe; 5 in all] on their front paw, and just the 4 large paws on their hind paw. The sex of a tiger can be determined from its track – with males having wider paws. The size difference between the lion and tiger is debatable – the mean weight of a male tiger, 160 kilogrammes, | Tigers, like other big cats, have 4 large toes [and one smaller toe; 5 in all] on their front paw, and just the 4 large paws on their hind paw. The sex of a tiger can be determined from its track – with males having wider paws. The size difference between the lion and tiger is debatable – the mean weight of a male tiger, 160 kilogrammes, | ||
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| With a wide range, tigers are highly adaptable to a wide range of habitats, and were likely adapted to an even greater range of habitats in times before European colonisation. Bengal Tigers, found in India, are best-suited to humid jungle, though also thrive in swamps and mangroves. Most Bengal Tiger populations are located in India – though a few also exist in Nepal, with even smaller populations in southern Bangladesh and Southern China. One especially large population is found in Telangana, where tigers are kept in various reserves. In this Indian state, humidity stays around 65% year-round, with a typical hot, dry climate. The cooler period is marked by a period of monsoon – which lasts from June until September – resulting in 755 millimeters of precipitation. Telangana is of mixed evergreen forest – some trees reaching 70 metres in height. Leopards are the only big cats the use trees intensively – but tigers use trees mainly to mark territory, but should a tiger come across a tree with low-hanging branches, it will use it as a refuge or place of rest. Younger tigers, up to the age of sixteen months, climb trees often as a form of adventure, and sometimes even chase langur monkeys into the trees. Nuts also fall from trees, becoming a primary food-source for deer and wild pigs, so healthy trees are instrumental to the abundance of tigers in an area. Some Bengal Tigers can also be found at the Sundarbans Mangrove Forest, a coastal environment – the only such environment where tigers live. The Sundarbans, however, present a challenging environment for tigers to thrive – as it is an area where human settlement is becoming more commonplace; | With a wide range, tigers are highly adaptable to a wide range of habitats, and were likely adapted to an even greater range of habitats in times before European colonisation. Bengal Tigers, found in India, are best-suited to humid jungle, though also thrive in swamps and mangroves. Most Bengal Tiger populations are located in India – though a few also exist in Nepal, with even smaller populations in southern Bangladesh and Southern China. One especially large population is found in Telangana, where tigers are kept in various reserves. In this Indian state, humidity stays around 65% year-round, with a typical hot, dry climate. The cooler period is marked by a period of monsoon – which lasts from June until September – resulting in 755 millimeters of precipitation. Telangana is of mixed evergreen forest – some trees reaching 70 metres in height. Leopards are the only big cats the use trees intensively – but tigers use trees mainly to mark territory, but should a tiger come across a tree with low-hanging branches, it will use it as a refuge or place of rest. Younger tigers, up to the age of sixteen months, climb trees often as a form of adventure, and sometimes even chase langur monkeys into the trees. Nuts also fall from trees, becoming a primary food-source for deer and wild pigs, so healthy trees are instrumental to the abundance of tigers in an area. Some Bengal Tigers can also be found at the Sundarbans Mangrove Forest, a coastal environment – the only such environment where tigers live. The Sundarbans, however, present a challenging environment for tigers to thrive – as it is an area where human settlement is becoming more commonplace; | ||
| - | In Nepal, there are Bengal Tigers which live mainly in five national parks – where they live in the Terai Arc Landscape – an area of some 24,710 kilometres. Sitting at the foothills of the Himalayas, the humidity and temperature of the TAL are not greatly different than that of Telangana. The most common tree within much of the region is the Sal tree, //Shorea robusta//. 22% of the Indian tiger population is located in the TAL, where it often comes into contact with people – of which the population there numbers 6.7 million; and is in increase. There may be as many as 5 tigers for every 100 square kilometres at the TAL. Whilst tigers cause sizable economic losses within the area, leopards are typically seen as greater economical threats, as they attack people and livestock more common. Malayan Tigers are another race of tiger that is well-suited to humid environments – confirmed to be separate from the Indo-China Tiger in 2004. Most Malayan Tigers are found in Taman-Negara, | + | In Nepal, there are Bengal Tigers which live mainly in five national parks – where they live in the Terai Arc Landscape – an area of some 24,710 kilometres. Sitting at the foothills of the Himalayas, the humidity and temperature of the TAL are not greatly different than that of Telangana. The most common tree within much of the region is the Sal tree, //Shorea robusta//. 22% of the Indian tiger population is located in the TAL, where it often comes into contact with people – of which the population there numbers 6.7 million; and is in increase. There may be as many as 5 tigers for every 100 square kilometres at the TAL. Whilst tigers cause sizable economic losses within the area, leopards are typically seen as greater economical threats, as they attack people and livestock more often. Malayan Tigers are another race of tiger that is well-suited to humid environments – confirmed to be separate from the Indo-China Tiger in 2004. Most Malayan Tigers are found in Taman-Negara, |
| The South China Tiger, now extinct in the wild, mainly inhabited broadleaf forests of Southern China, where it was mainly a resident of moderate montane environments. About 100 live in captivity, most living in the Wangcheng Park Zoo, with some 40. A few now also live at Laohu Valley Reserve – a nature reserve located in South Africa. Humidity and climate of this reserve is somewhat dissimilar to what would be experienced in native China – but breeding success has occurred here. The Indochinese Tiger is now found neither in India or China, but is now mostly found in Thailand, with some small populations in Myanmar. Like the South China Tiger, it most often resides in mixed broadleaf forests. The Amur, or Siberian Tiger, is the most unusual race of tiger in terms of habitat today – where the five other major races live in mostly tropical environments, | The South China Tiger, now extinct in the wild, mainly inhabited broadleaf forests of Southern China, where it was mainly a resident of moderate montane environments. About 100 live in captivity, most living in the Wangcheng Park Zoo, with some 40. A few now also live at Laohu Valley Reserve – a nature reserve located in South Africa. Humidity and climate of this reserve is somewhat dissimilar to what would be experienced in native China – but breeding success has occurred here. The Indochinese Tiger is now found neither in India or China, but is now mostly found in Thailand, with some small populations in Myanmar. Like the South China Tiger, it most often resides in mixed broadleaf forests. The Amur, or Siberian Tiger, is the most unusual race of tiger in terms of habitat today – where the five other major races live in mostly tropical environments, | ||
| ===== V. NOTES ON TIGER DIET ===== | ===== V. NOTES ON TIGER DIET ===== | ||
| - | As discussed above, the prey of tigers can vary dependent on the area, but seem to show a preference for deer, pigs, and buffalo on occasion. Tigers often avoid human settlement when possible, and most cases where tigers venture into human settlement to violent result come about as a product of the destruction of species that tigers prey on. The time of day in which tigers are most active is dependent on the situation in which they are found – tigers observed in wild environments, | + | As discussed above, the prey of tigers can vary dependent on the area, but seem to show a preference for deer, pigs, and buffalo on occasion. Tigers often avoid human settlement when possible, and most cases where tigers venture into human settlement to violent result come about as a product of the destruction of species that tigers prey on. The time of day in which tigers are most active is dependent on the situation in which they are found – |
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| ===== VI. TIGER REPRODUCTION ===== | ===== VI. TIGER REPRODUCTION ===== | ||
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| ===== VIII. TIGERS IN WESTERN PERCEPTION; ITS EFFECTS ON TIGER POPULATIONS ===== | ===== VIII. TIGERS IN WESTERN PERCEPTION; ITS EFFECTS ON TIGER POPULATIONS ===== | ||
| - | With the arrival of western colonisation, | + | With the arrival of western colonisation, |
| But the plight of the tiger, by then, was well-known about – and several legislative changes had taken place. China had banned the domestic trade of tiger-based products – and a symposium was held in London, ‘Tigers 2000’, which would lead into a project which raised money for tigers in wild populations. In 2007, some 11,000 tigers existed in managed care worldwide – 5,000 in Chinese breeding centres, which gave concern that it could fuel a market for tiger parts and medicine. In 2010 some hope was given to the state of tigers in the wild – in some areas of India, population density had increased. Political support had been given to tiger population extensions in India, with 2,225 or so tigers in India by 2014 – an increase from 1700 or so in 2010. In 2016 almost 4000 tigers were believed to exist in the wild, with 300 Amur tigers existing in colder regions. With continued destruction of natural habitat, as well as ongoing hunting, tigers are still considered as ‘endangered’ by the IUCN – but with strengthened governmental support, in a sense, the plight to return tigers to natural habitat hasn’t been stronger at most any points before. | But the plight of the tiger, by then, was well-known about – and several legislative changes had taken place. China had banned the domestic trade of tiger-based products – and a symposium was held in London, ‘Tigers 2000’, which would lead into a project which raised money for tigers in wild populations. In 2007, some 11,000 tigers existed in managed care worldwide – 5,000 in Chinese breeding centres, which gave concern that it could fuel a market for tiger parts and medicine. In 2010 some hope was given to the state of tigers in the wild – in some areas of India, population density had increased. Political support had been given to tiger population extensions in India, with 2,225 or so tigers in India by 2014 – an increase from 1700 or so in 2010. In 2016 almost 4000 tigers were believed to exist in the wild, with 300 Amur tigers existing in colder regions. With continued destruction of natural habitat, as well as ongoing hunting, tigers are still considered as ‘endangered’ by the IUCN – but with strengthened governmental support, in a sense, the plight to return tigers to natural habitat hasn’t been stronger at most any points before. | ||
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