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Furthermore, monogamous mating system and female dispersion are found to be closely related. Some of the main conclusions of the occurrence of monogamy in mammals include: [7] Monogamy occurs when males are unable to monopolize more than one female; Monogamy should be more likely if female under-dispersion occurs
Monogamy in mammals is rather rare, only occurring in 3–9% of these species. [3] [4] [5] A larger percentage of avian species are known to have monogamous relationships (about 90%), [6] but most avian species practice social but not genetic monogamy in contrast to what was previously assumed by researchers. [7]
Hence there is a theoretical expectation that females tend to be larger in species that are monogamous. Females are larger in many species of insects, many spiders, many fish, many reptiles, owls, birds of prey and certain mammals such as the spotted hyena, and baleen whales such as blue whale. As an example, in some species, females are ...
Monogamy (/ m ə ˈ n ɒ ɡ ə m i / mə-NOG-ə-mee) is a relationship of two individuals in which they form a mutual and exclusive intimate partnership.Having only one partner at any one time, whether that be for life or whether that be serial monogamy, contrasts with various forms of non-monogamy (e.g., polygamy or polyamory). [1]
Relatedness does still play a part, as monogamy (queens mating singly) is the ancestral state for all eusocial species so far investigated. [73] If kin selection is an important force driving the evolution of eusociality, monogamy should be the ancestral state, because it maximizes the relatedness of colony members.
Only 3% of mammalian species are socially monogamous, although up to 15% of primate species are. [10] [16] Social monogamy has also been observed in reptiles, fish, and insects. Sexual monogamy is also rare among animals. Many socially monogamous species engage in extra-pair copulations, making them sexually non-monogamous. For example, while ...
Monogamy: One male and one female have an exclusive mating relationship. The term "pair bonding" often implies this. This is associated with one-male, one-female group compositions. There are two types of monogamy: type 1, which is facultative, and type 2, which is obligate. Facultative monogamy occurs when there are very low densities in a ...
Close to ninety percent [3] of known avian species are monogamous, compared to five percent of known mammalian species.The majority of monogamous avians form long-term pair bonds which typically result in seasonal mating: these species breed with a single partner, raise their young, and then pair up with a new mate to repeat the cycle during the next season.