Biological Anthropology Study Notes

Ape Taxonomy

  • Hominoidea includes:

    • Hylobatidae (Lesser Apes)

    • Hominidae (Great Apes) includes:

      • Ponginae (Orangutans)

      • Gorilliinae (Gorillas)

      • Homininae (Humans)

Hylobatidae Characteristics

  • 4 genera with primitive features

  • Longest forelimbs of any primate

  • Behavior: Pair living, territorial, and possibly monogamous

  • Diet: Gibbons are frugivorous; Siamangs are folivorous

Hominidae Characteristics

  • 4 genera that include large arboreal and terrestrial animals

  • Notable examples: Pongo (Orangutans), Gorilla, Pan (Chimpanzees)

  • Behavioral traits: Tool use in Pan

Primate Behavior and Communication

  • Behavior: Action in response to stimuli, can be innate or learned

  • Tinbergen’s four questions:

    1. Function (ultimate)

    2. Phylogeny (ultimate)

    3. Mechanism (proximate)

    4. Ontogeny (proximate)

Primate Social Structures

  • Types of groups: Monogamous, polygamous, solitary, etc.

  • Influencing factors: Food availability, home range, relationships with species

Foraging and Dietary Adaptations

  • Food types: fruits, leaves, insects, etc.

  • Different species balance energy intake with foraging costs

  • Behavioral adaptations to dietary toxins include sacculated stomachs and geophagy

Reproductive Strategies

  • Females: Limited by resources, strive for optimal food access

  • Males: Minimal investment, seek mating opportunities

  • Infanticide as a strategy to enhance reproductive success in males

Ecology and Environment

  • Primates adapt to various climates and habitats from tropical forests to savannahs

  • Key roles in ecosystems: Pollinators, seed dispersers, and prey

Sociology and Communication

  • Types of communication: Tactile, visual, auditory, olfactory

  • Importance of communication in social bonding and conflict resolution