1 Primate traits https://youtu.be/BpnlS_ach-0 Recall: some important homologies distinguishing the primate order: *flexible limbs and prehensile hands/feet *general dental formula and omnivorous diet *color vision, diurnal, depend on vision more *delayed maturation/development, more dependence on flexible social behavior and learning
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Recall: some important homologies distinguishing the ... · Recall: some important homologies distinguishing the primate order: *flexible limbs and prehensile hands/feet *general
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Primate traitshttps://youtu.be/BpnlS_ach-0
Recall: some important homologies distinguishing the primate order:
*flexible limbs and prehensile hands/feet
*general dental formula and omnivorous diet
*color vision, diurnal, depend on vision more
*delayed maturation/development, more dependence on flexible social behavior and learning
Question: Since...are all adaptations (traits that evolved in response to the environment), what environmental context best explains why primates acquired all these adaptations?
-what environment makes color vision a beneficial adaptation?
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Three hypotheses explaining primate adaptations
Visual-predation hypothesis: many primate traits are adaptations to hunting insects in the lower tiers of the rainforests mya.
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Three hypotheses explaining primate adaptations
Flowering plant hypothesis: primate traits developed the same time flowering plants (angiosperms) diversified globally.
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Three hypotheses explaining primate adaptations
Arboreal hypothesis: many primate traits are adaptations to living in trees
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Three hypotheses explaining primate adaptations
Prosimians: Lemurs and lorises-Madagascar
Ancestral traits-reliance on olfaction
-rhinarium: moist, fleshy pad on noses-shorter gestation/maturation period-dental comb: used to groom and feed