Traditionally, 12 recent subspecies of lion were recognised, distinguished by mane appearance, size, and distribution. Because these characteristics are very insignificant and show a high individual variability, most of these forms were probably not true subspecies, especially as they were often based upon zoo material of unknown origin that may have had "striking, but abnormal" morphological characteristics. Today, only eight subspecies are usually accepted although one of these, the cope lion, formerly described as Panthera leo melanochaita, is probably invalid. Even the remaining seven subspecies might be too many. While the status of the Asiatic lion (P. l. persica) as a subspecies is generally accepted, the systematic relationships among African lions are still not completely resolved. mithochondrial variation in living African lions seemed to be modest according to some newer studies, therefore all sub-Saharan lions sometimes have been considered a single subspecies, however, a recent study revealed lions from western and central Africa differ genetically from lions of southern or eastern Africa. According to this study, western african lions are more closely related to Asian lions than to South or East African lions. These findings might be explained by a late Pleistocene extinction event of lions in western and central Africa and a subsequent recolonization of these parts from Asia. Previous studies, which were focused mainly on lions from eastern and southern parts of Africa, already showed these can be possibly divided in two main clades: one to the west of the great rift valley and the other to the east. Lions from tsavo in eastern Kenya are much closer genetically to lions in transvaal (South Africa), than to those in the aberdare range. in western Kenya.Another study revealed there are three major types of lions, one North African–Asian, one southern African and one middle African. Conversely, Per Christiansen found that using skull morphology allowed him to identify the subspecies krugeri, nubica, persica, and senegalensis, while there was overlap between bleyenberghi with senegalensis and krugeri. The Asiatic lion persica was the most distinctive, and the Cape lion had characteristics allying it more with P. l. persica than the other sub-Saharan lions. He had analysed 58 lion skulls in three European museums. Lions are the only members of the cat family to display obvious sexual dimorphism – that is, males and females look distinctly different. They also have specialised roles that each gender plays in the pride. For instance, the lioness, the hunter, lacks the male's thick mane. The colour of the male's mane varies from blond to black, generally becoming darker as the lion grows older. The most distinctive characteristic shared by both females and males is that the tail ends in a hairy tuft. In some lions, the tuft conceals a hard "spine" or "spur", approximately 5 mm long, formed of the final sections of tail bone fused together. The lion is the only felid to have a tufted tail – the function of the tuft and spine are unknown. Absent at birth, the tuft develops around 5½ months of age and is readily identifiable at 7 months
Monday, 6 October 2014
LIFE STYLE OF THE LIONS
Traditionally, 12 recent subspecies of lion were recognised, distinguished by mane appearance, size, and distribution. Because these characteristics are very insignificant and show a high individual variability, most of these forms were probably not true subspecies, especially as they were often based upon zoo material of unknown origin that may have had "striking, but abnormal" morphological characteristics. Today, only eight subspecies are usually accepted although one of these, the cope lion, formerly described as Panthera leo melanochaita, is probably invalid. Even the remaining seven subspecies might be too many. While the status of the Asiatic lion (P. l. persica) as a subspecies is generally accepted, the systematic relationships among African lions are still not completely resolved. mithochondrial variation in living African lions seemed to be modest according to some newer studies, therefore all sub-Saharan lions sometimes have been considered a single subspecies, however, a recent study revealed lions from western and central Africa differ genetically from lions of southern or eastern Africa. According to this study, western african lions are more closely related to Asian lions than to South or East African lions. These findings might be explained by a late Pleistocene extinction event of lions in western and central Africa and a subsequent recolonization of these parts from Asia. Previous studies, which were focused mainly on lions from eastern and southern parts of Africa, already showed these can be possibly divided in two main clades: one to the west of the great rift valley and the other to the east. Lions from tsavo in eastern Kenya are much closer genetically to lions in transvaal (South Africa), than to those in the aberdare range. in western Kenya.Another study revealed there are three major types of lions, one North African–Asian, one southern African and one middle African. Conversely, Per Christiansen found that using skull morphology allowed him to identify the subspecies krugeri, nubica, persica, and senegalensis, while there was overlap between bleyenberghi with senegalensis and krugeri. The Asiatic lion persica was the most distinctive, and the Cape lion had characteristics allying it more with P. l. persica than the other sub-Saharan lions. He had analysed 58 lion skulls in three European museums. Lions are the only members of the cat family to display obvious sexual dimorphism – that is, males and females look distinctly different. They also have specialised roles that each gender plays in the pride. For instance, the lioness, the hunter, lacks the male's thick mane. The colour of the male's mane varies from blond to black, generally becoming darker as the lion grows older. The most distinctive characteristic shared by both females and males is that the tail ends in a hairy tuft. In some lions, the tuft conceals a hard "spine" or "spur", approximately 5 mm long, formed of the final sections of tail bone fused together. The lion is the only felid to have a tufted tail – the function of the tuft and spine are unknown. Absent at birth, the tuft develops around 5½ months of age and is readily identifiable at 7 months
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