While competing males and choosy females may be common in animal mating systems, male choice can evolve under certain conditions. Sexual cannibalism is such a condition because of the high mortality risk for males. In mantids, female body condition is associated with male mate preference, with fat females preferred, due to at least two reasons.

中文翻译：

---

更正：性同类相食物种的雄性配偶选择：雄性从祈祷螳螂中的饥饿雌性中逃脱

虽然竞争性雄性和挑剔的雌性在动物交配系统中很常见，但雄性选择可以在某些条件下进化。性同类相食之所以如此，是因为男性的死亡风险很高。在螳螂中，雌性身体状况与雄性交配偏好有关，而肥胖雌性更受偏好，至少有两个原因。