Currently viewing the tag: "parental investment"
Extra pair paternity occurs when the female of a partner of a pair bonded couple engages in extra pair copulations (i.e. copulation with a male other than the bonded male) and as a result gives birth to offspring whose father is not the bonded male.
In general terms, the sexes within a species may be either competitive (i.e. compete against intrasexually for access to a resource, which is in this case, the opposite sex) or choosy. The ‘choosy’ sex therefore makes a decision about which member of the opposite sex he or she will mate with.
