Primates!

OPERATIONAL SEX RATIO

MALE PARENTAL CARE

EXTRA-PAIR PATERNITY

EXTENDED BREEDING BONDS

INTERMALE COMPETITION

SEXUAL SIZE DIMORPHISM

GENETIC MONOGAMY

SOCIAL MONOGAMY

MATING SYSTEM

MATING EFFORT VS. PARENTING EFFORT

PATERNAL INVESTMENT

PAIR-LIVING

SPERM PRODUCTION RATE

CRYPTIC FEMALE CHOICE

RELATIVE TESTES SIZE

SPERM COMPETITION