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PB Lecture 2

EXAM TUESDAY

QuestionAnswer
what is the only exception to what primates traits share? petrosal auditory bulla
4 things primates are different from mammals 1. Skeletal features related to locomotion 2. Neural and sensory systems 3. Heterodont dentition 4. Life history characteristics (e.g. number of offspring, inter-birth interval, age at first birth, life span)
3 hypothesis of adaptive significance in primate traits 1. Aboreal 2. Visual predation 3. Angiosperm
4 major characteristics of primates 1. Locomotor 2. Neural and sensory system 3. Dentition and diet 4. Life cycle phases
who is the problem child? Tarsiiformes
Describe locomotor of primates and what do those traits relect? They have grasping hands and feet -nails not claws -opposable thumb/toe -pentadacytl -prehensile They have a clavicle. -should movement & arms to side Reflect aboreal environment
Describe Neural and sensory system and what do those traits relect? Big brain, visual, Reduced reliance on olfaction Arboreal, visual predators of insects, many diurnal species, group-living
People vs Prosimians Short rostrum, Long rostrum Plate seperating orbital from temporal fossa, No plate
what are the photoreceptive cells Rod cells and cone cells
what are rod cells and what does it reflect NSS: a photoreceptive cells, colorless, vision in low light Nocturnal activity pattern
what are cone cells and what does it reflect NSS: color, visual accuity, RGB Dirunal
what is special about the brain size of primates NSS: we have enlarged brain, frontal lobe for reasoning and cognition Human has a brain x the size in comparison to our body size
Describe dentition and diet of primates and what do those traits relect? They have 4 primary teeth Generalized diet
what are the 4 primary teeth of primates 1. Incisors 2. Canines 3. Premolars 4. Molars
what is the difference in terms of teeth of primates vs nonprimates DD: Non-Primates (Dogs and Whales) have caniniform tooth morphology
What is the life cycle phases of primates like have a slow growth rate and a long period of development
what are humans anthropoids
what are prosimians Lemurs of Madagascar Galagos (bushbabies) Africa Lorises of Asia & SE Asia Tarsiers of SE Asia
what are anthropoids NWM South and Central America OWM Africa and Asia Apes Asian apes = gibbons and orangutans African apes = gorilla, chimp, bonobo Humans - African origin, now globally distributed
Where do living primates live? Mostly tropical to sub-tropical OWMs range into savanna, semi-desert and even temperate zones Several biomes Rainforest, seasonal forest, woodland, savanna, semi-desert; Temperate woodland
what are the Shared derived traits of Haplorhini 1. Dry rhinarium 2. Hemochorial placenta 3. Basicranial anatomy and blood supply to brain
Created by: 1815146653
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