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| Four groups of primate trends |
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Definition
Group 1: Locomotor
Group 2: Neural/sensory
Group 3: Feeding
Group 4: Life history-phases the species goes through throughout their lives and milestones they reach. |
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| What kind of skeleton do primates have? |
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Definition
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Not very narrow anatomical specializations.
Retained finger bones, clavicles, ect.
Allows for upper arm to retain mobility |
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| What kinds of hands and feet do primates have? |
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Definition
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Definition
Enhanced mobility
Grasping ability
Opposable thumb |
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Term
| Nails, not Claws, and Tactile Pads |
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Definition
Tactile pads have a lot of nerve endings
Better capacity for finer manipulation
Strong grasp
The reason having claws isn’t preferred for primates is because they get bigger. Claws wouldn’t be as effective as grasping. |
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| What kind of Upper Body Posture |
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Definition
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Definition
Easier to free hands to manipulate objects
Bipedal locomotion
“Facultative locomotion" |
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Term
| Reduced Snout and Olfaction |
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Definition
Don’t rely as much on smell
Reduced parts of brain dedicated to interpreting smells
Dry nose |
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Definition
| Frontated: Stereoscopic Vision |
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| Frontated eyes: Stereoscopic Vision |
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Definition
Better depth perception
Better able to track/catch prey and jump from tree to tree |
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Definition
Some co-opt color into signaling (red and blue on faces for example)
Ability to tell ripe fruit |
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| Rely more on vision or olfaction? |
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Definition
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| portions of cortex that appear to have evolved more recently in evolutionary terms than other parts of the brain |
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| Can’t just say that primates have “bigger brains.” The bigger the body, the bigger the brain. However, given the body size, primates in general have bigger brains than expected. They also have more neocortex in their brain than expected. |
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| How much of a primates brain is neocortex? |
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| different teeth. Primates have 4 different types of teeth. Canines, incisors, molars, premolars |
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Definition
Amount of calories per unit of mass
Fairly nutrient rich
Things like fruit and insects |
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Definition
Conception, gestation, birth, infancy, weaning, Juvenile, first reproduction, adulthood, death
Things like how long these stages last, length of life, amount of children had and how often, body size, ect. All these can be acted upon by natural selection. |
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| During the gestation process, primates have |
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Definition
| More efficient fetal nutrition |
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Term
| k selected or r selected? |
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Definition
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Definition
few offspring, invest a lot in each
(carrying capacity of land) |
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many offspring, little investment
r=reproductive rate |
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| Relative quickness of gestation? |
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Definition
• Long gestation
Tend to be pregnant for longer periods of time than other non-primate mammals comparative to their size |
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