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Giraffe genome holds keys to its peculiar body—and clues to hypertension treatments


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Researchers are uncovering the mutations that give giraffes like this pair from Uganda their unique physique.
JAN VERMEER/MINDEN PICTURES
Giraffe genome holds keys to its peculiar body and clues to hypertension treatments
Mar. 17, 2021 , 2:00 PM
To biologists, the giraffe’s long neck is a prime example of evolution’s handiwork, cited by both Charles Darwin and Jean-Baptiste Lamarck as support for their evolutionary theories. But it is also an engineering problem. In order to get oxygen up its 2-meter neck to its brain, a giraffe’s heart constantly pumps blood at a pressure roughly 2.5 times higher than is normal in humans. Now, a new giraffe genome is revealing genetic alterations that allow these animals to live happily with hypertension along with other genes linked to giraffes’ unusual physique. ....

Charles Darwin , Rasmus Heller , L Darryl Quarles , Bina Joe , Douglas Cavener , University Park , University Of Copenhagen , Wild Nature Institute , University Of Tennessee Health Science Center , University Of Toledo , Pennsylvania State University , Jean Baptiste Lamarck , Monica Bond , Wild Nature , Giraffa Camelopardalis , Science Advances , Tennessee Health Science Center , சார்லஸ் டார்வின் , ரஸ்முச் ஹெல்லர் , ல் டார்ரில் சண்டைகள் , பைனா ஓஹோ , பல்கலைக்கழகம் பூங்கா , பல்கலைக்கழகம் ஆஃப் கோபெந்ஹேகந் , காட்டு இயற்கை நிறுவனம் , பல்கலைக்கழகம் ஆஃப் டென்னசி ஆரோக்கியம் அறிவியல் மையம் , பல்கலைக்கழகம் ஆஃப் டோலிடோ ,

In Tanzania, Survival of Giraffes Is Influenced by How Close They Live To Towns


In Tanzania, Survival of Giraffes Is Influenced by How Close They Live To Towns
06/03/2021
The giraffe (
Giraffa camelopardalis) is an iconic megaherbivore whose populations are declining across Africa, the only continent where they are found. Giraffe numbers have plummeted from an estimated 150,000 in 1985 to fewer than 100,000 today.
Like many species of African wildlife, giraffes face numerous threats. The biggest threats are hunting for bushmeat markets and loss of habitat due to deforestation and the spread of farms.
Giraffes shape and sustain healthy ecosystems. For example, woody plant spines, such as thorn trees, are a response to giraffe browsing. Giraffes are also a big attraction for tourists. ....

Rift Valley , Alexmbogo Wikimedia Commons , Wild Nature Institute , Pennsylvania State University , Tanzania Wildlife Research Institute , University Of Zurich , Britam Tower , Masai Giraffe Project , Tanzania Wildlife Research , பிளவு பள்ளத்தாக்கு , காட்டு இயற்கை நிறுவனம் , பென்சில்வேனியா நிலை பல்கலைக்கழகம் , தான்சானியா வனவிலங்கு ஆராய்ச்சி நிறுவனம் , பல்கலைக்கழகம் ஆஃப் ஸுரி , மசாய் ஒட்டகச்சிவிங்கி ப்ராஜெக்ட் , தான்சானியா வனவிலங்கு ஆராய்ச்சி ,

Trailing giants: clues to how people and giraffes can thrive together


The giraffe (
Giraffa camelopardalis) is an iconic megaherbivore whose populations are declining across Africa, the only continent where they are found. Giraffe numbers have plummeted from an estimated 150,000 in 1985 to fewer than 100,000 today.
Like many species of African wildlife, giraffes face numerous threats. The biggest threats are hunting for bushmeat markets and loss of habitat due to deforestation and the spread of farms.
Giraffes shape and sustain healthy ecosystems. For example, woody plant spines, such as thorn trees, are a response to giraffe browsing. Giraffes are also a big attraction for tourists.
The best way to reverse giraffe population declines is to monitor individual animals and learn why they do better in one place over another. This helps to pinpoint threats and evaluate conservation strategies, such as how the presence of people influences giraffes and whether community conservation areas work. ....

Wild Nature Institute , Pennsylvania State University , Tanzania Wildlife Research Institute , University Of Zurich , Masai Giraffe Project , Tanzania Wildlife Research , காட்டு இயற்கை நிறுவனம் , பென்சில்வேனியா நிலை பல்கலைக்கழகம் , தான்சானியா வனவிலங்கு ஆராய்ச்சி நிறுவனம் , பல்கலைக்கழகம் ஆஃப் ஸுரி , மசாய் ஒட்டகச்சிவிங்கி ப்ராஜெக்ட் , தான்சானியா வனவிலங்கு ஆராய்ச்சி ,