Morris D J, van Aarde R J
Horm Behav. 1985 Dec;19(4):400-12. doi: 10.1016/0018-506x(85)90037-6.
Porcupines are sexually active throughout the estrous cycle, and sexual behavior is not affected by the reproductive status and hormonal milieu of females. Increased female-male interactions during estrus are the only indications of behavioral changes during estrus. The lack of aggression shown by females to known males as opposed to aggression shown to strange males, the greater interest shown by males toward certain females, and the superior breeding success of these females suggest a pair-bonding mating system. Limited changes in female receptivity throughout the cycle might be of importance in maintaining the pair-bond.
豪猪在整个发情周期都有性活动，性行为不受雌性生殖状态和激素环境的影响。发情期雌雄性互动增加是发情期行为变化的唯一迹象。与对陌生雄性表现出攻击性相反，雌性对熟悉雄性不表现出攻击性，雄性对某些雌性表现出更大兴趣，以及这些雌性更高的繁殖成功率，表明存在配偶结合的交配系统。整个周期中雌性接受性的有限变化可能对维持配偶关系很重要。
