ANTH 233 Lecture Notes - Lecture 5: Prestressed Concrete, Galago, Polygynandry
Document Summary
When group size doesn"t remain stable, especially when it grows, there tends to be fission, usually along matrilines thus reducing group size and competition. A group is organized and classified by: Can be used to see who leaves and who stays in a group. Reflects the compromises between female and male strategies to gain access to mates, food, and other sources that they and their offspring need to survive. All the nocturnal lemurs of madagascar, galagos, orangs, potto, loris. Group composition is usually male-biased dispersal, can be dispersed polygyny with the dominant male suppressing subordinates. More social than thought especially the orangs, galago sisters, and mouse lemurs which sleep in groups. Helps stop predators from noticing them, most are small nocturnal prey species. Territorial pair, cooperate in home range defense, monogamy. Group is pair, immature and unbonded offspring, will sometimes oust unbonded males or divide home range. Territorial, actively defend home-range, duet back and forth as a spacing mechanism.
