breeding seasons (observed in some pairs of American Robins, [7] Monogamy is quite rare in fish and amphibians, but not unheard of, appearing in a select few species. investment are even higher in most passerines, where males Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. monogamous - (used of relationships and of individuals) having one mate; "monogamous marriage"; "monogamous for life". In ornithologists and behavioral ecologists have come to view monecious, monoecious, monoicous - having male and female reproductive organs in the same plant or animal. Nglish: Translation of monogamous for Spanish Speakers. After this addition, the originally unfaithful voles became monogamous with their selected partner. This pair may cohabitate in an area or territory for some duration of time, and in some cases may copulate and reproduce with only each other. It is thought that this may be due to the fact that too many bears close to one another may deplete the food available to the relatively small but growing cubs. The vole is extremely loyal and will go as far as to even attack other females that may approach him. Early hominid sexual dimorphism and implications for mating systems and social behavior", "Sexual selection and the comparative anatomy of reproduction in monkeys, apes, and human beings", Promiscuity: an evolutionary history of sperm competition, "Animal Attraction: The Many Forms of Monogamy in the Animal Kingdom | NSF - National Science Foundation", "Social but not genetic monogamy is associated with greater breeding success in prairie voles", "Correlates of genetic monogamy in socially monogamous mammals: Insights from Azara's owl monkeys", "Canid reproductive biology: an integration of proximate mechanisms and ultimate causes", https://en.wikipedia.org/w/index.php?title=Monogamy_in_animals&oldid=978683633, Pages with DOIs inactive as of 2020 August, Short description is different from Wikidata, Articles needing expert attention with no reason or talk parameter, Articles needing expert attention from May 2008, Sexology and sexuality articles needing expert attention, Articles with unsourced statements from November 2010, Articles lacking reliable references from April 2019, Articles with unsourced statements from April 2019, Articles with unsourced statements from May 2012, Articles with unsourced statements from May 2020, Creative Commons Attribution-ShareAlike License, Recent studies using new methods of measurement suggest. Moreover, different sets of factors may explain the evolution of social monogamy in different species. In many animals, there are two sexes: the male, in which the gamete is small, motile, usually plentiful, and less energetically expensive, and the female, in which the gamete is larger, more energetically expensive, made at a lower rate, and largely immobile. Attempts to infer the evolution of monogamy based on sexual dimorphism remain controversial for three reasons: Studies of sexual dimorphism raise the possibility that early human ancestors were polygamous rather than monogamous. Because so few species have been investigated using The traditional view of why But do they have to be so strange that Area 51 is making headlines?

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