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Polygyny is associated with an increased sharing of subsistence provided by women. This is consistent with the theory that if women raise the children alone, men can concentrate on the mating effort. Polygyny is also associated with greater environmental variability in the form of variability of rainfall. This may increase the differences in ...
Polyandry (/ ˈ p ɒ l i ˌ æ n d r i, ˌ p ɒ l i ˈ æ n-/; from Ancient Greek πολύ (polú) 'many' and ἀνήρ (anḗr) 'man') is a form of polygamy in which a woman takes two or more husbands at the same time. Polyandry is contrasted with polygyny, involving one male and two or more females.
In cultures which practice polygamy, its prevalence among that population often correlates with social class and socioeconomic status. [7] Polygamy (taking the form of polygyny) is most common in a region known as the "polygamy belt" in West Africa and Central Africa, with the countries estimated to have the highest polygamy prevalence in the ...
[citation needed] In some species, polygyny and polyandry is displayed by both sexes in the population. Polygamy in both sexes has been observed in red flour beetle ( Tribolium castaneum ). Polygamy is also seen in many Lepidoptera species including Mythimna unipuncta (true armyworm moth).
The most prominent example is polygamy, which includes polygyny (when a man has more than one wife at the same time), and, less commonly, polyandry (when a woman has more than one husband), and polygynandry (a group marriage when more than one husband is married to more than one wife).
According to the Ethnographic Atlas, of 1,231 societies noted, 186 were monogamous; 453 had occasional polygyny; 588 had more frequent polygyny, and 4 had polyandry. [24] However, as Miriam Zeitzen writes, social tolerance for polygamy is different from the practice of polygamy, since it requires wealth to establish multiple households for ...
Polygynandry is a mating system in which both males and females have multiple mating partners during a breeding season. [1] In sexually reproducing diploid animals, different mating strategies are employed by males and females, because the cost of gamete production is lower for males than it is for females. [2]
Polyandry is often compared to the polygyny system based on the cost and benefits incurred by members of each sex. Polygyny is where one male mates with several females in a breeding season (e.g., lions, deer, some primates, and many systems where there is an alpha male ). [ 1 ]