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Squirrel Monkeys

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Grace Tantra

on 6 May 2014

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Transcript of Squirrel Monkeys

Squirrel Monkeys
By Grace Tantra
Types?
Central American Squirrel Monkey, Black-Crowned Central American Squirrel Monkey, Grey-Crowned Central American Squirrel Monkey
Humboldt's Squirrel Monkey, Ecuadorian Squirrel Monkey, Bare-Eared Squirrel Monkey, Black-Capped Squirrel Monkey, Bolivian Squirrel Monkey, Peruvian Squirrel Monkey, Black Squirrel Monkey
Common Squirrel Monkey
http://upload.wikimedia.org/wikipedia/commons/2/20/
Saimiri_sciureus-1_Luc_Viatour.jpg
Scientific Name:

Order:

Other Facts
Family:

Saimiri Sciureus
Primates
Cebidae
http://upload.wikimedia.org/wikipedia/commons/1/1e/Sq
uirrel_Monkey_-_Flickr_-_p_a_h_(1).jpg
(New World Monkey)
Other Name:
Death's Head Monkey
Lifestyle-Diet
https://c2.staticflickr.com/8/7122/815676035
1_cdf9ebb910_z.jpg
Lifestyle-Life Span
Life Span
Structural Adaptations-Locomotion
Structures:
Omnivores
Mainly fruits and insects
Squirrel Monkeys mainly eat fruits and insects, but also eat flowers, buds, eggs, nuts, lizards, and small vertebrates.
Structural Adaptations-Hands and Feet
monkey9.jpg
http://a-z-animals.com/media/animals/images/470x370/squirrel_
Hands and Feet
http://a-z-animals.com/media/animals/images/470x370
/squirrel_monkey6.jpg

Structures:

Human-like hands
Have opposable thumbs and big toes
Have claws
Helps to hold onto branches as they jump or walk
Helps them to grab insects when they are hunting for them
Helps them to grab and pick fruit
Functions:
Adaptations:
When squirrel monkeys want to eat insects, they must be able to hunt for them first
Squirrel monkeys need to be able to hold on to the branches as they jump from tree to tree or walk along the branches
The length of their arms and legs are around the same, but they have longer legs
Locomotion
http://upload.wikimedia.org/wikipedia/commons/1/1c/Comm
on.squirrel.monkey.arp.jpg
Functions:
They use their arms and legs to walk along branches
They use their arms and legs to help grab on when they jump
Adaptations:
They need their arms and legs around the same length so that they can easily walk quadrupedally
Their locomotion is not brachiation, so they don't need long arms
Locomotion:
Quadrupedalism- Walking on 4 limbs
Jumping from tree to tree
Structural Adaptations-Tails
Tails
http://upload.wikimedia.org/wikipedia/commons/thumb/8/84/Saimiri_sciure
Structures:
Tails are slightly longer than their bodies.
Around 41 cm long
us_(curious).jpg/768px-Saimiri_sciureus_(curious).jpg
Functions:
Unlike many new world monkeys, squirrel monkeys do not have prehensile tails
Their tails help to keep their balance as they walk and jump from tree to tree
Adaptations:
They need to be able to keep their balance so that they don't fall off from the trees
Structural Adaptations-Face
Structures:
Their cheek teeth, molars and premolars, have large cusps.
Face

https://c1.staticflickr.com/9/8367/8396958959_ed4
a8282a7_z.jpg
Functions:
These teeth help the squirrel monkey to chew on insects and spiders
Adaptations:
They need to be able to chew on spiders and insects if they catch and eat them.
Fun Fact!!!
The black and white face of the squirrel monkey gives them the name:
Death's Head Monkey
From book Primate Adaptation and Evolution: 3rd Edn
Lifestyle-Geographical Range
Range?
Squirrel monkeys prefer dense, tropical forests. They usually stay close to rivers, or other flowing water sources
Social Behavior-Diurnal vs. Nocturnal
Diurnal vs. Nocturnal
http://upload.wikimedia.org/wikipedia/commons/6/60/Sleep.svg
http://upload.wikimedia.org/wikipedia/commons/
c/ce/Sun01.jpg
Diurnal
Active during day, asleep at night
Social Behavior-Family Groupings
Family Groupings
Squirrel Monkeys are grouped in troops:
Around 40 to 50 individuals
Can hold up to 500 monkeys
Social Behavior-Social Hierarchy
Social Hierarchy
Females form alliances with other females
http://pin.primate.wisc.edu/factsheets/entry/squirrel_monkey/behav
Males form groups with other males
Dominant males and females within smaller groups
Social Behavior-Social Behaviors
Social Behaviors
Chuck Calls:
Communication between females in a group
Urine-Wash:
Squirrel Monkeys spread urine among a substrate, marking territory and other areas
Back Rubbing:
Back rubbing on surfaces or other monkeys
Social Behavior-Social Behaviors
Male/Male
Males form close bonds
When troops are formed, high-ranking males will fight to keep solitary or peripheral males out of the group
Social Behavior-Social Behaviors
Male/Female
Even though they form troops with both males and females:
Female alliances don't include males
Male groups don't include females
Social Behavior-Social Behaviors
Mother/Baby
First Month:
Infants remain in physical contact with mother
Weeks 5 and 6:
Infant starts leaving to explore
4 Months:
Infants become independent from mother, spending time with their own peers
Social Behavior-Social Behaviors
Mother/Baby
Infants are carried on mother's back
Infants are too heavy to be carried ventrally
http://pin.primate.wisc.edu/factsheets/image/122
Social Behavior-Mating/Dimorphism
Mating
Males fight aggressively for the right to mate, the winner usually being able to mate with most of the females in the troop.
http://pin.primate.wisc.edu/factsheets/entry/squirrel_monkey/behav
Social Behavior-Mating/Dimorphism
Dimorphism
Males and females usually are around the same size, but when it's around 2 months before the mating season, the males gain weight.
Environmental Threats-Causes of Threat to Population
Deforestation
The main cause of threat to squirrel monkeys.
Environmental Threats-IUCN Red List Rating
IUCN Red List
http://upload.wikimedia.org/wikipedia/commons/6/66/
Clearcutting-Oregon.jpg
Least Concern
The population is decreasing, but the red list category is still
Zoo-Portrait of Focal Primate
My Focal Primate
Squiggles
Zoo-Movement Study
Arboreal vs. Terrestrial
Lifestle-Arboreal vs. Terrestrial
Squirrel monkeys are arboreal
Squiggles never touched the floor of her cage
Social Behavior-Social Behaviors
Primate's Behavior
Zoo-Primate's Behavior
In the wild, I don't think that they would be feeding self a lot. In the zoo, the food is just there, but in the wild, they have to find it.
Bibliography
"Common Squirrel Monkey (Saimiri Sciureus)." The Primata. N.p., 11 May 2007. Web. 22 Apr. 2014. <http://www.theprimata.com/saimiri_sciureus.html>.

"Squirrel Monkey." A-Z Animals. N.p., n.d. Web. 22 Apr. 2014. <http://a-z-animals.com/animals/squirrel-monkey/>.

Sipahi, Levent. "Saimiri Boliviensis." Animal Diversity Web. N.p., 2006. Web. 26 Apr. 2014. <http://animaldiversity.ummz.umich.edu/accounts/Saimiri_boliviensis/>.

"Common Squirrel Monkey." Bristol Zoo Gardens. N.p., n.d. Web. 24 Apr. 2014. <http://www.bristolzoo.org.uk/common-squirrel-monkey>.

Lang, Kristina Cawthon. "Squirrel Monkey." Primate Info Net. Ed. Laurie Kauffman. N.p., 16 Mar. 2006. Web. 24 Apr. 2014. <http://pin.primate.wisc.edu/factsheets/entry/squirrel_monkey/cons>.

Lang, Kristina Cawthon. "Squirrel Monkey Saimiri." Primate Info Net. Ed. Laurie Kauffman. N.p., 16 Mar. 2006. Web. 26 Apr. 2014. <http://pin.primate.wisc.edu/factsheets/entry/squirrel_monkey/behav>.

Claws on hands
21 Years
(Both wild and captivity)
Squirrel monkeys always sleep together in troops, but will separate into smaller groups when finding food or doing other things.
Tail is supposed to be longer than body
Arms and legs are around the same length
Full transcript