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  2. Polyandry in animals - Wikipedia

    en.wikipedia.org/wiki/Polyandry_in_animals

    In polyandrous mating it has been suggested that male cooperation may outweigh the costs of sharing paternity in situations of scarcity, of foods and of high competition levels for land or females. Female size and a large breeding territory defended by more males may force male cooperation.

  3. Mating system - Wikipedia

    en.wikipedia.org/wiki/Mating_system

    In many polyandrous systems, the males and the female stay together to rear the young. In polygynous systems where the number of females paired with each male is low and the male will often stay with one female to help rear the young, while the other females rear their young on their own.

  4. Polyandry - Wikipedia

    en.wikipedia.org/wiki/Polyandry

    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.

  5. Sexual dimorphism - Wikipedia

    en.wikipedia.org/wiki/Sexual_dimorphism

    The male may therefore come to have different traits from the female. Male (left), offspring (center), and female (right) Sumatran orangutans These traits could be ones that allow him to fight off other males for control of territory or a harem , such as large size or weapons; [ 157 ] or they could be traits that females, for whatever reason ...

  6. Sexual dimorphism in non-human primates - Wikipedia

    en.wikipedia.org/wiki/Sexual_dimorphism_in_non...

    Extant primates exhibit a broad range of variation in sexual size dimorphism (SSD), or sexual divergence in body size. [4] It ranges from species such as gibbons and strepsirrhines (including Madagascar's lemurs) in which males and females have almost the same body sizes to species such as chimpanzees and bonobos in which males' body sizes are larger than females' body sizes.

  7. List of dominance hierarchy species - Wikipedia

    en.wikipedia.org/wiki/List_of_dominance...

    Normally, female pale chanting goshawks mate with a single male , but in "broken veld" vegetation (a prey-rich habitat in the Little Karoo), a female and two males may form a polyandrous trio. [26] In these cases an alpha male and female will be assisted in raising the young by a beta male.

  8. Polyandry in fish - Wikipedia

    en.wikipedia.org/wiki/Polyandry_in_fish

    The third step occurs as females compete to lay a clutch into a nest for the next male while the original male is caring for the initial clutch. [11] More successful females tend to produce greater amounts of offspring. Male pregnancy is a common feature in the family Syngnathidae, which includes pipefish, seahorses, and sea dragons. [12]

  9. Sexual selection in amphibians - Wikipedia

    en.wikipedia.org/wiki/Sexual_selection_in_amphibians

    Male Dendropsophus microcephalus calling. Sexual selection in amphibians involves sexual selection processes in amphibians, including frogs, salamanders and newts.Prolonged breeders, the majority of frog species, have breeding seasons at regular intervals where male-male competition occurs with males arriving at the waters edge first in large number and producing a wide range of vocalizations ...