Comparative Primate Blog Post
Lemurs:
Environment - Lemurs reside in Madagascar, an island South East of Africa and in the Comoro Islands. The climate in Madagascar is very tropical but at some times very dry. Madagascar consists of beaches, lagoons, mountains, rivers, grassland and even desert. The island use to be mostly forest but unfortunately most of that is gone. Most Lemurs live on trees and spend most of their time at the top of the rain forests.
Sociality and Mating Patterns - Lemurs are social primates and love to interact with others of their own kind. They usually live in groups of 25. It is said that lemurs who live in larger social groups are smarter and best at social cognition. A lemurs mating season is very short, about less than three weeks per year. The smaller the species the more that can be born at once. A bigger lemur species can only have about 1 or 2. Depending on the resources available to the lemurs (like food) would be if they reproduced or not. When they choose not to reproduce it is due to the fact that they cant provide and they also want to survive. The time of year that the lemurs mate can also be a big factor because that affects when their baby is born which could be during winter, spring or summer. I think this is a big factor of that the Lemur has to adapt to that relates to the trait because they have to be smart for example when there is no food supply the lemur adapts and doesn't mate because it does not want to reproduce.
Spider Monkey:
Environment - Spider Monkeys live in the tropical rain forests of central and south America and up as north to Mexico. They use their long arms to swing from tree to tree.Sociality and Mating Patterns -Spider Monkeys live in groups of approximately 35 members, usually led by females and they are the ones who decide how large the group will be. If there is plenty of food to be found in their habitat then they won't mind if their group grows a little. When the group gets to large to even handle she breaks them up into small groups and each group goes their own way. They believe that they have a better chance of surviving that way instead of being in one large group. Spider Monkeys are very vocal and depend on it a lot to warn each other, to protect their young or even the environment. Spider Monkeys do not have a specific mating season. They will just let it happen whenever they want to, but they will only mate if and only if there is enough food in the environment. Female spider monkeys are very picky when it comes down to picking a mate.
I think spider monkeys have been influenced by the environment mostly when it comes down to mating, because they don't have specific times to do so but if they see that there is not enough resources then they choose not to reproduce and that is what to me seems like the spider monkey adapting.
Baboon:
Environment - Baboons are found to live in Africa and Arabia. Baboons prefer to live in the Savanna and/or other semi-arid habitats, some do choose to live in rain forests.
Sociality and Mating Patterns - Baboons usually live in groups or so called "troops" consisting of 15-150 members. In the groups there are adult males and adult females and their offsprings. Females usually always remain in the same group for the rest of their lives. But Males tend to leave and go to other troops in order to mate. The baboons create relationships whiting the groups and usually their friendship consists o grooming each other, or if they like each other and choose each other to be each others mating partner.
I think they use their trait and adapt because they live in large groups I believe they do so to protect each other from hard since they do live in a area where there are all kinds of animals.
Gibbon:
Environment - Gibbons live in the forests of southern Asia, and perfectly adapt to their life in the trees. They rarely ever come to the ground, they spend most of their time up in the trees.
Sociality and Mating - Gibbons live in small stable family groups, unlike the other primates they have a stable family that they stick to ( a ale and a female that mate for life and their offspring who is most likely younger than 7 years old). When they reproduce Gibbons are pregnant for 7 months, and have one baby at a time.
I think that their trait is influenced by the environment because they are stable and always up in trees they only stick to one mating partner for life.
Chimpanzee :
Environment - Chimpanzees are found in Africa, they inhabit 22 African countries. They live in rain forests which use to be equatorial forest belt of Africa. Chimps are both terrestrial and arboreal.
Sociality and Mating - Like humans, Chimpanzees love social interactions with others. They live in social groups known as communities or unit groups that usually consist of 40 to 60 members. They split up into groups of 10 when they travel or go out to look for food. When it comes down to Mating a female chimpanzee who is known to be attractive may be accompanied my many of the males in her group or sometimes even all of them. Sometimes there is a dominant male in the group who possesses over her and shows violent actions that prevent other males from mating with her.
I think that their trait gets influenced by the environment because they split up into smaller groups to go look for food, I think that if the resources were available or if it was easy to travel in large groups then they would not bother to split up.
In conclusion, what I found to be the biggest influence by the environment was the resources found in the habitat. A lot of the primates would not reproduce if they did not have food around them that was available for when they have their baby.


Hello Amy,
ReplyDeleteVery good organization. I can see you put a lot of time and effort into this blog post. Good details I learned a lot from reading your posts. Great work!
Interesting discussion of the lemurs. Do you think the choice to reproduce is a conscious one? Or do you think perhaps there are biological reasons why they do or don't reproduce depending upon available resources? You do a good job of explaining mating patterns in relation to resources. Why do they live in such large groups? Can this be explained by the environment? Keep in mind that predators are also part of their environment.
ReplyDeleteThere may not be enough seasonal change in South America to justify a particular mating season for spider monkeys, but can you explain the reason why these primates live in such large groups?
I agree that protection in a terrestrial environment may have a lot to do with their troop size. Troops tend to take on a type of harem environment, with only a few males and many females. Why do you think this is? Why do males tend to leave the troop and females tend to stay?
Gibbons and spider monkeys both seem to live in similar arboreal environments and yet they live in very different social environments, with gibbons being monogamous and spider monkeys living in large groups. This difference is harder to explain, but is related to available food supplies. If food is readily available, larger groups are possible, whereas it is easier to find food resources for fewer individuals, suggesting resources may be patchier for gibbons.
Good discussion on the chimpanzees, particularly the practice of foraging, which allows for all to find food but still protect the central group and infants.
Okay on your conclusion, but given that this was worth 15 points, it needed to be expanded and more explanation provided. You had some very good points in your post that could have been drawn out here.
I see what I would consider, an imaginable pattern here with the 5 primates in our study with regards to mating and social patterns. The males run the show, but underneath it all the females make the decisions when it comes to mating. Just as the different groups of primates have different relationship parameters, so do humans-some traditional, some not. We also raise our young differently from one another as well, just like different primates do. As the primates in our study tend to have varying group sizes and social statuses’, we humans also tend to live in group that vary based on social and economic stature. These different groups will also vary in size, location and function.
ReplyDeleteWow you did very well making your blog very informative. I found the information you provided for the lemurs very interesting like how lemurs mating season is very short, about less than three weeks per year. I also really like how the gibbons stays with their mate for life. Your conclusion was kinda a let down compared to all your information provided on each primate. With that said it was still a great blog!
ReplyDeleteHey Amy,
ReplyDeleteReally nice post! I like your attention to details (very descriptive) and the photos fit perfectly to show the social behavior between the primates. Nice