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west and packer sexual selection in lions 2002 pdf

Cape lion — Wikipedia Republished // WIKI 2. The lion's mane consists of hair up to 23 cm long (C. Packer & L. Herbst, unpublished data), in colour from almost white to black, and covering, to varying degrees, the heads, necks, shoulders and chests of male lions (West & Packer 2002)., West, P.M. and Packer, C. (2002). Sexual selection, temperature and the lion’s mane. Science 297, 1339–1343. Department of Ecology, Evolution and Behavior, University of Minnesota, 1987 Upper Buford Circle, St. Paul, MN 55108, USA. E-mail: packer@umn.edu Pycnogonids Matthew Cobb What are pycnogonids? Also known as ‘sea spiders’, they.

Sustainable trophy hunting of African lions Nature

Sexual Selection Temperature and the Lion's Mane Peyton. Barbary lions may have developed long-haired manes, because of lower temperatures in the Atlas Mountains than in other African regions, particularly in winter. Results of a long-term study on lions in Serengeti National Park indicate that ambient temperature, nutrition and the level of testosterone influence the colour and size of lion manes., Wounding, mortality and mane morphology in African lions, Panthera leo PEYTON M. WEST*, (West & Packer 2002): males with darker manes show higher levels of testosterone, Attacks among Serengeti and Ngorongoro adult lions during 1966–2002 in which the observer noted the area of the body attacked.

However, possible Barbary lion individuals or descendants have been located in zoos and circus populations within the last three decades. [citation needed] The Barbary lion is often considered to be the heaviest of the lion subspecies; the calculated weight for the males is 200 to 272 kg (440-600 lb) and females 120 to 180 kg (260-400 lb). sexual selection Theoretical support exists for an exaggerated male structure to serve as both a weapon for intrasexual competition and as an ornament to signal quality and promote female choice. However, there is little, if any, evidence to support this theory in maleemale competition breeding systems. Using …

Panthera leo melanochaita is a lion subspecies in Southern and East Africa. In this part of Africa, lion populations are regionally extinct in Lesotho, Djibouti and Eritrea, and threatened by loss of habitat and prey base, killing by local people in retaliation for loss of livestock. that selection will favour a prolonged post-reproductive lifespan if this enables individuals to increase their п¬Ѓtness through assisting their own offspring to reproduce successfully (the grandmother

West PM, Packer C (2002) Sexual selection, temperature, and the lion’s mane. Science 297:1339–1343 PubMed CrossRef Google Scholar Widdig A, Bercovitch FB, Streich WJ, Sauermann U, Nürnberg P, Krawczak M (2004) A longitudinal analysis of reproductive skew in male rhesus macaques. that selection will favour a prolonged post-reproductive lifespan if this enables individuals to increase their fitness through assisting their own offspring to reproduce successfully (the grandmother

We tested for significance of female choice for antler size using a nonparametric sign test (West & Packer, 2002) for each of the three criteria by male age and combined. Results. Females preferred males with larger antlers in 20 of 25 trials based on time spent walking (P = 0.002) and in 11 of 14 trials based on time spent bedded (P = 0.029). A protective role for the lion's mane has long been assumed but this assumption has never been tested. We compared patterns of injury, mane development and adult mane morphology in a population of African lions and found no compelling evidence that the …

Lions Craig Packer What are lions? The largest cats in Africa, lions are about the same size as tigers. Modern lions descend from the extinct cave lion (Panthera atrox), which once ranged more widely than any mammalian species. Modern lions dispersed from Africa to Asia about 100,000 years ago, but Asiatic lions are now restricted to a small In most species, sport hunting of male trophy animals can only reduce overall population size when the rate of removal of males is so high that females can no longer be impregnated1. However, where males provide extensive paternal care, the removal of even a few individuals could harm the population as a whole2,3. In species such as lions

West PM, Packer C (2002) Sexual selection, temperature, and the lion’s mane. Science 297:1339–1343 PubMed CrossRef Google Scholar Widdig A, Bercovitch FB, Streich WJ, Sauermann U, Nürnberg P, Krawczak M (2004) A longitudinal analysis of reproductive skew in male rhesus macaques. (2002). Mane variation in African lions and its social correlates. Canadian Journal of Zoology. 80. 471-478. 10.1139/z02-024 Abstract: Manes are generally thought to characterize all adult male lions (Panthera leo). Here we document a population of lions in Tsavo National Park,

Tsavo lions are a distinct variety of Masai lions (Panthera leo nubica) living around the Tsavo River in the Tsavo East National Park in Kenya. Tsavo males are notable for their lack of mane and smooth pelt, their size, and that they actively participate in hunting. The lion's mane consists of hair up to 23 cm long (C. Packer & L. Herbst, unpublished data), in colour from almost white to black, and covering, to varying degrees, the heads, necks, shoulders and chests of male lions (West & Packer 2002).

7/9/2004 · The lions enjoy a higher per capita food-intake rate and higher cub recruitment at low population density, The Full Text of this article is available as a PDF (187K). Selected References West Peyton M, Packer Craig. Sexual selection, temperature, and the lion's mane. Science. 2002 Aug 23; 297 (5585):1339–1343. Email this Article Tsavo lion

We tested for significance of female choice for antler size using a nonparametric sign test (West & Packer, 2002) for each of the three criteria by male age and combined. Results. Females preferred males with larger antlers in 20 of 25 trials based on time spent walking (P = 0.002) and in 11 of 14 trials based on time spent bedded (P = 0.029). The lion's mane consists of hair up to 23 cm long (C. Packer & L. Herbst, unpublished data), in colour from almost white to black, and covering, to varying degrees, the heads, necks, shoulders and chests of male lions (West & Packer 2002).

22/2/2004 · In most species, sport hunting of male trophy animals can only reduce overall population size when the rate of removal of males is so high that females can no longer be impregnated1. However, where males provide extensive paternal care, the removal of even a few individuals could harm the population as a whole2,3. In species such as lions [citation needed] Some experts, however, have expressed the belief that such weights are greatly exaggerated, and that the Barbary lion was similar in size to the lions in East Africa. [2] The two other primary predators of northern Africa, the Atlas bear and Barbary leopard, are …

[citation needed] Some experts, however, have expressed the belief that such weights are greatly exaggerated, and that the Barbary lion was similar in size to the lions in East Africa. [2] The two other primary predators of northern Africa, the Atlas bear and Barbary leopard, are … Quite surprisingly, they found that Indian lions clustered with West and Central African lions forming a separate clade to lions in East and South Africa. Although their study had a good representation of lions from West and Central Africa, they did not include lions from some parts of West …

11/10/2019В В· The mane of the African lion ( Panthera leo ) is a highly variable trait that reflects male condition and ambient temperature. We examined the consequences of this variation in a long-term study of lions in the Serengeti National Park, Tanzania. Mane darkness indicates nutrition and testosterone and influences both female choice and male-male Panthera leo melanochaita is a lion subspecies in Southern and East Africa. In this part of Africa, lion populations are regionally extinct in Lesotho, Djibouti and Eritrea, and threatened by loss of habitat and prey base, killing by local people in retaliation for loss of livestock.

In most species, sport hunting of male trophy animals can only reduce overall population size when the rate of removal of males is so high that females can no longer be impregnated1. However, where males provide extensive paternal care, the removal of even a few individuals could harm the population as a whole2,3. In species such as lions body size for exact numbers). These differences in body size between sexes may be due to sexual selection. Larger body size (and mane size in lions) has been documented to positively effect an individual's success rate in male-male competition and female choice (West and Packer 2002).€ Development/Gene Regulation

pdf. On the Nature and Significance of Variability in selection. Lions show substantial variation within populations but Scientists have coined 23 Animal (Panthera leo): A review. Journal of Zoology, 263, 329–342 Behavior, 71, 609–619 West, P. M., Packer, C. (2002). Sexual selection, temperature, and the We tested for significance of female choice for antler size using a nonparametric sign test (West & Packer, 2002) for each of the three criteria by male age and combined. Results. Females preferred males with larger antlers in 20 of 25 trials based on time spent walking (P = 0.002) and in 11 of 14 trials based on time spent bedded (P = 0.029).

Lions Craig Packer What are lions? The largest cats in Africa, lions are about the same size as tigers. Modern lions descend from the extinct cave lion (Panthera atrox), which once ranged more widely than any mammalian species. Modern lions dispersed from Africa to Asia about 100,000 years ago, but Asiatic lions are now restricted to a small Barbary lions may have developed long-haired manes, because of lower temperatures in the Atlas Mountains than in other African regions, particularly in winter. Results of a long-term study on lions in Serengeti National Park indicate that ambient temperature, nutrition and the level of testosterone influence the colour and size of lion manes.

Barbary lions may have developed long-haired manes, because of lower temperatures in the Atlas Mountains than in other African regions, particularly in winter. Results of a long-term study on lions in Serengeti National Park indicate that ambient temperature, nutrition and the level of testosterone influence the colour and size of lion manes. 11/10/2019В В· The mane of the African lion ( Panthera leo ) is a highly variable trait that reflects male condition and ambient temperature. We examined the consequences of this variation in a long-term study of lions in the Serengeti National Park, Tanzania. Mane darkness indicates nutrition and testosterone and influences both female choice and male-male

However, possible Barbary lion individuals or descendants have been located in zoos and circus populations within the last three decades. [citation needed] The Barbary lion is often considered to be the heaviest of the lion subspecies; the calculated weight for the males is 200 to 272 kg (440-600 lb) and females 120 to 180 kg (260-400 lb). Email this Article Tsavo lion

Cape lion. Quite the same Wikipedia. Just better. This would be a way to reduce conflict....but, if Tigers (and other Big Cats) don't have manes, why would Lions require them to signal? Is it a way to reduce the inherent violence in the Lion? They do live in open plains, but so do Cheetahs, and, to a lesser extent, Cougars. They

Sustainable trophy hunting of African lions Nature

west and packer sexual selection in lions 2002 pdf

Tsavo lion — Wikipedia Republished // WIKI 2. Request PDF on ResearchGate Sexual Selection, Temperature, and the Lion's Mane The mane of the African lion (Panthera leo) is a highly variable trait that reflects male condition and ambient temperature. We examined the consequences of this variation in a long-term study of lions in the Serengeti National Park, Tanzania. Mane darkness, 7/9/2004 · The lions enjoy a higher per capita food-intake rate and higher cub recruitment at low population density, The Full Text of this article is available as a PDF (187K). Selected References West Peyton M, Packer Craig. Sexual selection, temperature, and the lion's mane. Science. 2002 Aug 23; 297 (5585):1339–1343..

west and packer sexual selection in lions 2002 pdf

Wounding mortality and mane morphology in African lions

west and packer sexual selection in lions 2002 pdf

Lion (Panthera leo) 'Mane' Research Carnivora. The mane of the African lion (Panthera leo) is a highly variable trait that reflects male condition and ambient temperature. We examined the consequences of this variation in a long-term study of lions in the Serengeti National Park, Tanzania. Mane darkness indicates nutrition and testosterone and influences both female choice and male-male https://gl.wikipedia.org/wiki/Panthera_leo Lions Craig Packer What are lions? The largest cats in Africa, lions are about the same size as tigers. Modern lions descend from the extinct cave lion (Panthera atrox), which once ranged more widely than any mammalian species. Modern lions dispersed from Africa to Asia about 100,000 years ago, but Asiatic lions are now restricted to a small.

west and packer sexual selection in lions 2002 pdf


What are lions? The largest cats in Africa, lions are about the same size as tigers. Modern lions descend from the extinct cave lion (Panthera atrox), which once ranged more widely than any mammalian species. Modern lions dispersed from Africa to Asia about 100,000 years ago, but Asiatic lions are now restricted to a small part of Gujarat in (2002). Mane variation in African lions and its social correlates. Canadian Journal of Zoology. 80. 471-478. 10.1139/z02-024 Abstract: Manes are generally thought to characterize all adult male lions (Panthera leo). Here we document a population of lions in Tsavo National Park,

Abstract The mane of the African lion (Panthera leo) is a highly variable trait that reflects male condition and ambient temperature. We examined the consequences of this variation in a long-term study of lions in the Serengeti National Park, Tanzania. However, possible Barbary lion individuals or descendants have been located in zoos and circus populations within the last three decades. [citation needed] The Barbary lion is often considered to be the heaviest of the lion subspecies; the calculated weight for the males is 200 to 272 kg (440-600 lb) and females 120 to 180 kg (260-400 lb).

22/2/2004 · In most species, sport hunting of male trophy animals can only reduce overall population size when the rate of removal of males is so high that females can no longer be impregnated1. However, where males provide extensive paternal care, the removal of even a few individuals could harm the population as a whole2,3. In species such as lions Quite surprisingly, they found that Indian lions clustered with West and Central African lions forming a separate clade to lions in East and South Africa. Although their study had a good representation of lions from West and Central Africa, they did not include lions from some parts of West …

Packer estimates mair nor 200 Tanzanians are killt ilka year bi lions, crocodiles, elephants, hippos, an snakes, an that the nummers coud be dooble that amount, wi lions thocht tae kill at least 70 o those. Packer haes documented that atween 1990 an 2004, lions attacked 815 fowk in Tanzanie, killin 563. Barbary lions may have developed long-haired manes, because of lower temperatures in the Atlas Mountains than in other African regions, particularly in winter. Results of a long-term study on lions in Serengeti National Park indicate that ambient temperature, nutrition and the level of testosterone influence the colour and size of lion manes.

In most species, sport hunting of male trophy animals can only reduce overall population size when the rate of removal of males is so high that females can no longer be impregnated1. However, where males provide extensive paternal care, the removal of even a few individuals could harm the population as a whole2,3. In species such as lions Email this Article Tsavo lion

Science 297, 1339 (2002); Peyton M. West and Craig Packer Sexual Selection, Temperature, and the Lion's Mane This copy is for your personal, non-commercial use only. colleagues, clients, or customers by clicking here. If you wish to distribute this article to others, you can order high-quality copies for your € following the guidelines here. 20/1/2010 · A second finding relates to approach and avoidance responses of wild lions to dummies set up to have long or short manes, and, light or dark manes. Females approached the dark-maned model, and the long-maned model, proportionately more than did males (West and Packer, 2002).

sexual selection Theoretical support exists for an exaggerated male structure to serve as both a weapon for intrasexual competition and as an ornament to signal quality and promote female choice. However, there is little, if any, evidence to support this theory in maleemale competition breeding systems. Using … pdf. Wounding, mortality and mane morphology in African lions, Panthera leo. Animal Behaviour, 2006. Marna Ericson. Raul Hinojosa-ojeda. Peyton West. Marna Ericson. Raul Hinojosa-ojeda. Peyton West. Download with Google Download with Facebook or download with email. Wounding, mortality and mane morphology in African lions,

7/9/2004 · The lions enjoy a higher per capita food-intake rate and higher cub recruitment at low population density, The Full Text of this article is available as a PDF (187K). Selected References West Peyton M, Packer Craig. Sexual selection, temperature, and the lion's mane. Science. 2002 Aug 23; 297 (5585):1339–1343. Using Photogrammetry and Color Scoring to Assess Sexual Dimorphism in Wild Western Gorillas sexual selection ABSTRACT Investigating sexual dimorphism is impor-tant for our understanding of its influence on reproductive strategies including male–male competition, mate (West and Packer, 2002). Although there are detailed descriptions

However, possible Barbary lion individuals or descendants have been located in zoos and circus populations within the last three decades. [citation needed] The Barbary lion is often considered to be the heaviest of the lion subspecies; the calculated weight for the males is 200 to 272 kg (440-600 lb) and females 120 to 180 kg (260-400 lb). Back in South Africa, Spence explained that he hoped to breed lions that at least looked like Cape lions, and to have DNA testing done to establish whether or not the cubs were descendants of the original Cape lion. However, Spence died in 2010 and the zoo closed in 2012, with the lions expected to go to Drakenstein Lion Park.

pdf. Wounding, mortality and mane morphology in African lions, Panthera leo. Animal Behaviour, 2006. Marna Ericson. Raul Hinojosa-ojeda. Peyton West. Marna Ericson. Raul Hinojosa-ojeda. Peyton West. Download with Google Download with Facebook or download with email. Wounding, mortality and mane morphology in African lions, What are lions? The largest cats in Africa, lions are about the same size as tigers. Modern lions descend from the extinct cave lion (Panthera atrox), which once ranged more widely than any mammalian species. Modern lions dispersed from Africa to Asia about 100,000 years ago, but Asiatic lions are now restricted to a small part of Gujarat in

Wounding, mortality and mane morphology in African lions, Panthera leo PEYTON M. WEST*, (West & Packer 2002): males with darker manes show higher levels of testosterone, Attacks among Serengeti and Ngorongoro adult lions during 1966–2002 in which the observer noted the area of the body attacked What are lions? The largest cats in Africa, lions are about the same size as tigers. Modern lions descend from the extinct cave lion (Panthera atrox), which once ranged more widely than any mammalian species. Modern lions dispersed from Africa to Asia about 100,000 years ago, but Asiatic lions are now restricted to a small part of Gujarat in

These pages are part of the San Diego Zoo Global Library website. Our website provides access to zoo, animal, plant, conservation, and veterinary information resources. Although the site is open to the general public, librarian services and some resources are reserved for SDZ Global staff and volunteers. 20/7/2007 · Abstract. Although the lion is one of nature’s best-known species, much remains to be learned about its variability. Recently documented variation in genetics, morphology, ecology and behavior help to explain its adaptability and illustrate the inter-dependencies of biological responses at different organizational scales.

(2002). Mane variation in African lions and its social correlates. Canadian Journal of Zoology. 80. 471-478. 10.1139/z02-024 Abstract: Manes are generally thought to characterize all adult male lions (Panthera leo). Here we document a population of lions in Tsavo National Park, Data on lion skull measurements taken were collected and analyzed to determine trends in trophy size as an indicator of population size, and area of origin among the concessioned hunting areas in Zambia for the period 1967-2000. A comparison of trophy quality was also made with Tanzania and Zimbabwe which were the other two key sources of lion

11/10/2019 · The mane of the African lion ( Panthera leo ) is a highly variable trait that reflects male condition and ambient temperature. We examined the consequences of this variation in a long-term study of lions in the Serengeti National Park, Tanzania. Mane darkness indicates nutrition and testosterone and influences both female choice and male-male pdf. On the Nature and Significance of Variability in selection. Lions show substantial variation within populations but Scientists have coined 23 Animal (Panthera leo): A review. Journal of Zoology, 263, 329–342 Behavior, 71, 609–619 West, P. M., Packer, C. (2002). Sexual selection, temperature, and the

Lions and their prey are officially protected in Tsavo, but they are regularly killed by local people, with over 100 known lion killings between 2001 and 2006. Males of the Tsavo prides are usually larger than other male lions, and actively participate in hunting. We tested for significance of female choice for antler size using a nonparametric sign test (West & Packer, 2002) for each of the three criteria by male age and combined. Results. Females preferred males with larger antlers in 20 of 25 trials based on time spent walking (P = 0.002) and in 11 of 14 trials based on time spent bedded (P = 0.029).

[citation needed] Some experts, however, have expressed the belief that such weights are greatly exaggerated, and that the Barbary lion was similar in size to the lions in East Africa. [2] The two other primary predators of northern Africa, the Atlas bear and Barbary leopard, are … This would be a way to reduce conflict....but, if Tigers (and other Big Cats) don't have manes, why would Lions require them to signal? Is it a way to reduce the inherent violence in the Lion? They do live in open plains, but so do Cheetahs, and, to a lesser extent, Cougars. They

Quite surprisingly, they found that Indian lions clustered with West and Central African lions forming a separate clade to lions in East and South Africa. Although their study had a good representation of lions from West and Central Africa, they did not include lions from some parts of West … Tsavo lions are a distinct variety of Masai lions (Panthera leo nubica) living around the Tsavo River in the Tsavo East National Park in Kenya. Tsavo males are notable for their lack of mane and smooth pelt, their size, and that they actively participate in hunting.

This would be a way to reduce conflict....but, if Tigers (and other Big Cats) don't have manes, why would Lions require them to signal? Is it a way to reduce the inherent violence in the Lion? They do live in open plains, but so do Cheetahs, and, to a lesser extent, Cougars. They 7/9/2004 · The lions enjoy a higher per capita food-intake rate and higher cub recruitment at low population density, The Full Text of this article is available as a PDF (187K). Selected References West Peyton M, Packer Craig. Sexual selection, temperature, and the lion's mane. Science. 2002 Aug 23; 297 (5585):1339–1343.

west and packer sexual selection in lions 2002 pdf

These pages are part of the San Diego Zoo Global Library website. Our website provides access to zoo, animal, plant, conservation, and veterinary information resources. Although the site is open to the general public, librarian services and some resources are reserved for SDZ Global staff and volunteers. 11/10/2019В В· The mane of the African lion ( Panthera leo ) is a highly variable trait that reflects male condition and ambient temperature. We examined the consequences of this variation in a long-term study of lions in the Serengeti National Park, Tanzania. Mane darkness indicates nutrition and testosterone and influences both female choice and male-male