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Social monogamy in mammals is defined as sexually mature adult organisms living in pairs. [1] While there are many definitions of social monogamy, this social organization can be found in invertebrates, reptiles and amphibians, fish, birds, mammals, and humans.
The amount of social monogamy in animals varies across taxa, with over 90% of birds engaging in social monogamy while only 3–9% of mammals are known to do the same. [6] [29] [30] This list is not complete. Other factors may also contribute to the evolution of social monogamy.
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.
However, despite the shortcomings of the haplodiploidy hypothesis, it is still considered to have some importance. For example, many bees have female-biased sex ratios and/or invest less in or kill males. Analysis has shown that in Hymenoptera, the ancestral female was monogamous in each of the eight independent cases where eusociality evolved. [2]
Black-backed jackals are one of very few monogamous mammals. This pair uses teamwork to hunt down prey and scavenge. They will stay together until one of the two dies. According to evolutionary psychologists David P. Barash and Judith Lipton, from their 2001 book The Myth of Monogamy, there are several varieties of pair bonds: [2]
Social monogamy, sexual monogamy, and genetic monogamy can occur in different combinations. Social monogamy is relatively rare in the animal kingdom. The actual incidence of social monogamy varies greatly across different branches of the evolutionary tree. Over 90% of avian species are socially monogamous. [10] [16] This stands in contrast to ...
The relationship between a cat and a dog can be harmonized if the proper steps are taken. Cats and dogs adopted at the same time, and raised in the same house, have a chance to put aside their ...
Clutton-Brock's early work was on social behaviour ... and sexual selection in cooperative mammals". ... of social monogamy in mammals". Science.341: 526-530 ...