Lemurs (Prosimians/Strepsirhini)
Spider Monkey (New World Monkey/Platyrrhini)
Baboon (Old World Monkey/Cercopithecidae)
Gibbon (Lesser ape/Hylobatidae)
Chimpanzee (Great ape/Hominidae
1. These primates that i have studied all have LARGE EYES that are placed in the frontal parts of there face which causes binocular vision, each sends visual information to both hemispheres of the brain, enhancing depth perception and producing Stereoscopic Vision. Which means they can see an object wit their two eyes at the same time on the same plane, humans have Stereoscopic Vision as well.
2. Sociality and Mating patterns
Prosimians/Strepsirhini
This Group can only be found in Madagascar and the comoro islands, Lemurs are found in social groups ranging in size from three to 25 individuals. The groups have both males and females. Females remain in their birth group throughout their lives and males generally change groups when they reach sexual maturity, at age three. Females are the dominant ones in the group, they choose who they want to mate with and have access to the foods the would like. The Females tend to mate with the male who has the hierarchy, but even the lower ranking males are able to find mates. A little fun fact is that Lemurs like sunbathing.
Spider Monkey (New World Monkey/Platyrrhini)
There is a large community of these individuals that regularly associate with one another but individuals within the larger community spend much of their time traveling in smaller, temporary sub-groups led by dominant adult female, the average group is three individuals, most commonly an adult male, and an adult female, and her dependent offspring spider monkey knows when to reproduce by watching at the female monkey getting her cycle to start to reproduce. The female monkey has a monthly cycle from 24 to 27 days long. Mating occurs from 2 to 3 days. If they don't stay together for the length of 3 days then no baby can be conceived. Monkeys usually mate when they are mature enough. The male becomes sexually mature at the age of 5 and the female at the age of 4. The spider monkey is ready to let go of her baby when it is 15 months old. The mother carries her young from 6 to 15 months.
Baboon (Old World Monkey/Cercopithecidae)
Different kinds of baboons that live in very different habitats tend to differ in group size ranging from 10 to 200!! Baboons live their entire lives in close proximity not only to friends and family but also to opponents. For a male who may live in several different groups over the course of his life, this situation is not so great. But for female baboons, her relationships with other females are good, they actually have friendships with one another, which is cool. Females Ranking high can displace lower ranking females from food and water sources. For high ranking males its effects you for how many offspring you leave behind. This is because high-ranking males manage to form sexual consortships with females more successfully than low-ranking males do. Its like marriage. But this means lower ranking males have more sexual options.
Gibbon (Lesser ape/Hylobatidae)
Gibbons live in small, monogamous families composed of a mated pair and up to four offspring. Less than six percent of all primate species (more than 300) are considered monogamous! The Females are Dominant in the group. The female leads the group frequently, especially in initiating calls, directing the group along its route, and entering and leaving sleeping trees. Males most often lead activities such as looking out for danger and entering territorial disputes Members of both sexes lead movements into food trees when the food supply is abundant.
Chimpanzee (Great ape/Hominidae)
The common chimpanzee has a fission-fusion society, and the groups at any one time could be of the following types: all-male, adult females and offspring, bisexual, one female and her offspring, and single individual. This species has a promiscuous mating system. . The core of the society are the males, who roam around and protect members of the group as well as hunt. Sometimes an adult male kills the infant of an unfamiliar female, male-male associations are the strongest in the group, with grooming and food sharing occurring between males Within the male hierarchy, alpha status is often gained through forming coalitions with a brother or an older non-relative. Male chimps can start to reproduce at 16 years of age,
I've found that with theses traits, these primates tend to be close knit with one another, they seem to always want to be around one another either helping with getting food, grooming one another or just for company. There environments are always close to where the food is as well, they do not do much traveling. The females in these groups seem to be the nay sayers, not so much for the Chimps though. I noticed for the type of environment each group, each were always around trees, which is why they all have hands that can grip branches and grab fruits from trees our pick up insects for the group that has insect in there diet.
Kind of confused as to why you included the discussion of the large eyes trait across primates. You only needed to focus on sociality and mating patterns for your last name.
ReplyDeleteGood description of the social patterns, but you are lacking the discussion of the environment for each primate and the influence of the environment of the social patterns. That was a crucial part of this assignment. You make the first step in that connection when you talk about "environments are always close to where the food is as well" but you needed to keep going with that thought process.
I liked the information that you had put up, even if it wasnt exactly the assigment. You had a lot of good information down. I loved the pictures - I almost used the same spider monkey picture that you used. That picture blew my mind! it was nuts. The information you had about the primates was really cool to read and it definitely sparked the desire for me to research into some topics a little more on my own time outside of class time.
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