Wednesday, November 9, 2011

Locomotive Traits in Primates

1. Ring-tailed lemur
  1. Lemurs live exclusively in Madagascar and the Comoros Islands. Though its the wild habitation is limited to these islands, the Ring-Tailed lemur inhabits a variety of environments, such as rainforest, subalpine, deciduous forest (a forest made of trees that shed leaves habitually), gallery forest (or a forest by a stream or river) and spiny bush forests. This ranges in anywhere from dense, lush forest to savanna landscapes.
  2. The ring tailed lemurs' locomotion includes walking on all four limbs as a quadrupedal and the ability to navigate through trees.
  3. These Strepsirhini do not usually brachiate to move or hang from tree branches; their bodies allow them safer travel on the forest floor.
  4. unknown.jpg


2. Black-handed spider monkey
  1. This species tends to live in the upper level canopies of rainforest, specifically semi-deciduous, cloud, and mangrove swamp forests. They can be found in Mexico, Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama.
  2. The black-handed spider monkey is a quadrupedal. Their movement through trees include using their tails for balance and suspension, walking bipedally along tree branches and leaping between trees and branches.
  3. Black-handed spider monkeys have developed a shrunken thumb, because of their methods of travel trough the tree-tops in their environment.
  4. 220px-Panama_spider_monkey,_Costa_Rica.JPG.jpg

3. Yellow Baboon
  1. Yellow baboons live in savannas, open woodlands, and gallery forests through out Angola, Zambia, Malawi, Mozambique, Tanzania, Kenya, and Somalia. Often, their accustomed to small amounts of rainfall and live nearby a water source. 
  2. Yellow baboons are quadrupeds with a running style similar to a horse's gallop. 
  3. These primates are able to run quickly on the ground in a gallop-like style because of their adaptations.
  4. 220px-Papio_cynocephalus02.jpg

4. Western hoolock gibbon
  1. This classification of gibbon inhabits dense evergreen forests, semi-evergreen forests, bamboo forests, and plantations in Bangladesh, north-eastern India and north-western Myanmar, and occasionally Tibet. These locations offer the wet and lush, contiguous canopy that western hoolocks inhabit.
  2. Gibbons typically travel by brachiation, which is movement by swinging from branch to branch
  3. The primates' locomotion has caused it to adapt long arms and hook-shaped hands.
  4. HoolockGibbon1.jpg-for-web-LARGE.jpg
5. Central Chimpanzee
  1. Central chimpanzees are most commonly found in gallery forests, moist forests and dry forests, which extend into savanna woodlands. They can be found in Angola, Cameroon, Central African Republic, Congo, The Republic of the Congo, Equatorial Guinea, and Gabon.
  2. These anthropoids are knuckle-walking quadrupeds who will occasionally uses bipedalism when holding an object or has hands occupied.
  3. Chimpanzees's arms are longer than their legs to allow knuckle-walking.
  4. 3801_file_chimp_Sholley.jpg

Summary: Environment affects not only physical characteristic, but behavioral characteristics as well. For example, the yellow baboons of the savannah develop social groups to protect themselves in the open area. This offers a better alarm system while allowing more time to eat and drink. 
As for physical traits, primarily arboreal primates tend to have short thumbs, hooked shaped hands, and long arms for brachiating. Primarily quadruped primates, tend to have arms longer than their legs, but are still able to manage in trees. 

Sources: http://pin.primate.wisc.edu/factsheets/entry/ring-tailed_lemur
http://www.macalester.edu/~montgomery/spidermonkey.html

3 comments:

  1. For the lemurs, you are correct that they move along the ground, but what is their locomotion when they are in the trees? It is a specific kind of locomotion.

    Also, how do you connect the type of environment you mentioned in the part a with the adaptation in part b? This was an important connection to make and was not really discussed specifically during the specific sections for each primate. (Part C) For example, for the chimps, is it their locomotion that causes their adaptations or is it their environment?

    Your summary is quite good, however. I liked how you noted the connection between limb length and locomotion and the shape of the hands with the combination of arboreal locomotion. Good images and good sourcing.

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  2. You found a great amount of information about the environment for each primate, compared to myself i had a hard time finding such specifics. The vocabulary for the styles of locomotion was also scientific and correct with added quality to your work. You were very specific in describing the styles for each primate so much that I could create a visual. Fantastic job!

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  3. I really liked your post I never really considered how the environment would change the locomotives of a species. Your post was written very well and was very clear I was able to actually picture the way the primates moved their environments.

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