Ví dụ về việc sử dụng Blue wildebeest trong Tiếng anh và bản dịch của chúng sang Tiếng việt
{-}
-
Colloquial
-
Ecclesiastic
-
Computer
The diploid number of chromosomes in the blue wildebeest is 58.
The total number of blue wildebeest is estimated to be around 1,550,000.
The black wildebeest is currently included in the same genus as the blue wildebeest(Connochaetes taurinus).
Fossil evidence suggests that the blue wildebeest were quite common in the Cradle of Humankind in the past.
Generally, the larvae of Gedoelstica and Oestrus occur in the nasal passages andrespiratory cavities of the blue wildebeest, and sometimes migrate to the brain.
Compared to some other bovids, blue wildebeest are resistant to infestations by several species of tick.[29].
Non-human species associated with stampede behavior include zebras, cattle,elephants, blue wildebeests, walruses,[2] wild horses, and rhinoceroses.
The blue wildebeest was first known to westerners in the northern part of South Africa a century later, in the 1800s.[12].
The herpesvirus was first isolated from the blue wildebeest in 1960 by veterinary scientist Walter Plowright.
The blue wildebeest was at first placed under a separate genus, Gorgon,[13][14] while the black wildebeest belonged to the genus Connochaetes.
The most striking morphological differences between the black and blue wildebeest are the orientation and curvature of their horns and the color of their coats.
The blue wildebeest remained in its original range and changed very little from the ancestral species, while the black wildebeest changed more as adaptation to its open grassland habitat in the south.
The black wildebeest is believed to have diverged from the blue wildebeest to become a distinct species around a million years ago, in the mid to late Pleistocene.
The horns of blue wildebeest protrude to the side, then curve downwards before curving up back towards the skull, while the horns of the black wildebeest curve forward then downward before curving upwards at the tips.
The black wildebeest lineage seems to have diverged from the blue wildebeest in the mid- to late Pleistocene, and became a distinct species around a million years ago.
It seems that, like the blue wildebeest, the black wildebeest acts as a reservoir for the virus and that all animals are carriers, being persistently infected but showing no symptoms.
As one of the major herbivores of southern and eastern Africa, the blue wildebeest plays an important role in the ecosystem, and is a main prey item for large predators such as the lion.
An analysis of the activity of blue wildebeest at the Serengeti National Park showed that the animals devoted over half of their total time to rest, 33% to grazing, 12% to moving about(mostly walking), and a little to social interactions.
Estes coined the term"Challenge Ritual" to describe this behaviour for the blue wildebeest, but this is also applicable to the black wildebeest, owing to the close similarity in the behaviour in both species.
The southern limit of the blue wildebeest stops at the Orange River, while the western limit is bounded by Lake Victoria and Mt Kenya.
They never made such extensive migrations as the blue wildebeest, but at one time, they crossed the Drakensberg Range, moving eastwards in autumn, searching for good pastures.
Finally two distinct types of wildebeest- the blue and black wildebeest- were identified.
Though the blue and black wildebeest are currently classified in the same genus, the latter was previously placed in a separate genus, Gorgon.
The first study of the protozoa in blue and black wildebeest showed the presence of 23 protozoan species in the rumen, with Diplodinium bubalidis and Ostracodinium damaliscus common in all the animals.