Whether you prefer realistic depictions or abstract designs, there is something for everyone at Media Storehouse. Some popular choices include close-up portraits of chimpanzees showcasing their expressive faces, playful interactions between family members or groups in the wild, and artistic interpretations that capture the essence of these intelligent creatures. You can choose from a variety of options such as black and white photographs, colorful illustrations, and stunning digital artworks. These prints showcase the beauty, intelligence, and unique characteristics of these Hominidae mammals animals in their natural habitat. open sci 10 (9): 230145 doi: 10.1098/rsos.We offer a wide range of Chimpanzee art prints that are perfect for animal lovers and enthusiasts. Downclimbing and the evolution of ape forelimb morphologies. The study was published in the journal Royal Society Open Science. That’s what evolution does - it’s a great tinkerer.” Now you have something that can throw a spear or rocks to protect itself from being eaten or to kill things to eat for itself. “It’s that same early-ape anatomy with a couple of tweaks. “Once Homo erectus could use fire to protect itself from nocturnal predators, the human form took on broader shoulders capable of a 90-degree angle that - combined with free-moving shoulders and elbows - made our ancestors excellent shots with a spear (apes cannot throw accurately).” “Flexible shoulders and elbows passed on from ancestral apes would have allowed early humans such as Australopithecus to climb trees at night for safety and come down in the daylight unscathed.” Natural selection would have favored those anatomies that allowed them to descend safely.” Big apes can’t afford to fall because it could kill or badly injure them. “Getting out of a tree presents all kinds of new challenges. “The first apes evolved 20 million years ago in the kind of dispersed forests where they would go up a tree to get their food, then come back down to move on to the next tree.” “We’ve been ignoring the second half of this behavior.” “Our field has thought about apes climbing up trees for a long time - what was essentially absent from the literature was any focus on them getting out of a tree,” said Dartmouth College Professor Jeremy DeSilva. “Downclimbing represented such a significant physical challenge given the size of apes and early humans that their morphology would have responded through natural selection because of the risk of falls.” “Our study broaches the idea of downclimbing as an undervalued, yet incredibly important factor in the diverging anatomical differences between monkeys and apes that would eventually manifest in humans.” “Existing research has observed chimps ascending and navigating trees - usually in experimental setups - but our videos from the wild allowed us to examine how the animals’ bodies adapted to climbing down.” “Our findings are among the first to identify the significance of ‘downclimbing’ in the evolution of apes and early humans, which are more genetically related to each other than to monkeys,” Fannin said. When climbing down, however, chimpanzees extended their arms above their heads to hold onto branches like a person going down a ladder as their greater weight pulled them downward rump-first. They found that chimps and mangabeys scaled trees similarly, with shoulders and elbows mostly bent close to the body. They also studied the anatomical structure of chimp and mangabey arms using skeletal collections. In the study, the authors used sports-analysis and statistical software to compare videos and still-frames they took of chimpanzees and sooty mangabeys climbing in the wild. “There is, however, a strong theoretical argument for focusing instead on vertical descent (downclimbing), which motivated us to quantify the effects of climbing directionality on the forelimb kinematics of wild chimpanzees ( Pan troglodytes) and sooty mangabeys ( Cercocebus atys).” “It is tempting to link the greater mobility of these joints to the functional demands of vertical climbing and below-branch suspension, but field-based kinematic studies have found few differences between chimpanzees and monkeys when comparing forelimb excursion angles during vertical ascent (upclimbing).” “The forelimbs of hominoid primates (apes) are decidedly more flexible than those of monkeys, especially at the shoulder, elbow and wrist joints,” said Dartmouth College graduate student Luke Fannin and colleagues. Image credit: Luke Fannin, Dartmouth College.
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