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The giraffe weevil (Trachelophorus giraffa) is a species of small weevil endemic to Madagascar. [2] They are black-bodied and have bright red elytra covering their wings. . Giraffe weevils are known for their elongated necks, with the males having necks 2 to 3 times the size of their female counte
As you watch the video, you can hear the loud whacks coming from the neck punches, indicating these giraffes are hitting hard. And in the end, one triumphs while the other loses his footing.
Thus, these nerve cells have a length of nearly 5 m (16 ft) in the largest giraffes. [78] Despite its long neck and large skull, the brain of the giraffe is typical for an ungulate. [80] Evaporative heat loss in the nasal passages keep the giraffe's brain cool. [54] The shape of the skeleton gives the giraffe a small lung volume relative to its ...
A Penn State researcher has been trying to get to the bottom of the age-old question of why giraffes have long necks. Focus on research: Female giraffes drove the evolution of long necks, new ...
Giraffes gain their long necks by a different heterochrony, extending the development of their cervical vertebrae; they retain the usual mammalian number of these vertebrae, seven. [1] This number appears to be constrained by the use of neck somites to form the mammalian diaphragm muscle; the result is that the embryonic neck is divided into ...
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The long neck is a result of mating. Male giraffes fight over females by wrapping their necks around eachother. The one with the longer neck usually has more force and wins the right to breed with the female. As a result the gene for the long neck increases within the population because it increases the giraffes chances for breeding. The ...
Parasitoid use of viruses: parasitoid wasps lay their eggs inside host caterpillars; to keep the caterpillar's immune system from killing the egg, a virus is also "laid" with the eggs. Two unrelated wasps use this trick. [153] Short-lived breeders: species that are in the juvenile phase for most of their lives.