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Monogamy in mammals

D G Kleiman

    The Quarterly Review of Biology
    |March 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Mammalian monogamy, or mating exclusivity, presents two types: facultative and obligate. These mating systems influence reproductive strategies and social behaviors in various species.

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    Area of Science:

    • Zoology
    • Behavioral Ecology
    • Mammalogy

    Background:

    • Monogamy, defined as mating exclusivity, is a reproductive strategy observed in various mammal species.
    • Understanding the evolutionary pressures and life-history traits associated with monogamy is crucial for comprehending mammalian social systems.

    Purpose of the Study:

    • To review the behavioral, ecological, and reproductive characteristics of monogamous mammals.
    • To identify trends and differentiate between facultative and obligate monogamy in mammals.

    Main Methods:

    • Literature review of selected primate, carnivore, rodent, and ungulate species exhibiting monogamy.
    • Analysis of life histories, social structures, and reproductive behaviors.

    Main Results:

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    • Two forms of mammalian monogamy identified: Type I (facultative) and Type II (obligate).
    • Facultative monogamy may arise from low population densities, while obligate monogamy is linked to resource scarcity and the need for cooperative breeding.
    • Common traits include minimal sexual dimorphism and limited socio-sexual interactions outside pair-bond formation.

    Conclusions:

    • Selective pressures for facultative and obligate monogamy likely differ, shaping distinct reproductive and social dynamics.
    • Obligate monogamy involves delayed sexual maturation in offspring and cooperative breeding, with significant paternal care.
    • Monogamous mammals exhibit specific adaptations in reproduction and social behavior driven by ecological and evolutionary factors.