Mutual wing-eating between female and male within mating pairs in wood-feeding cockroach
Mutual wing-eating between female and male within mating pairs in wood-feeding cockroach
复制标题
食木蟑螂交配对中雌性和雄性之间相互吃翅
作者：
Osaki H;Kasuya E
人们在性同类相食或婚后喂养中研究了吃掉配偶或配偶身体一部分的行为。在这些行为中，只有一种性别单方面吃另一种性别。在食木蟑螂（Salganea taiwanensis）的交配中，雄性和雌性会互相吃掉对方的翅膀，这是这些行为中的第一个“共同”案例。由于性同类相食和婚食的进化已经基于单方面性得到了解释，这种相互进食应该具有新的繁殖意义。我们定量地描述了这种行为，并提出了一个基于真正的一夫一妻制的新假设，即 S 的交配系统。台湾黄蜂一生只与一位配偶交配。在真正的一夫一妻制下，配偶的适应度与自身的适应度相同，并且配对之间不会发生性冲突。如果吃翅膀可以增加配偶抚养后代的能力，那么这种行为对于食者和配偶来说都是适应性的。
The behavior of eating their mates or a part of their mate's body has been studied in sexual cannibalism or nuptial feeding. In these behaviors, only one sex eats the other unilaterally. Within mating pairs of a wood‐feeding cockroach (Salganea taiwanensis), males and females eat the mate's wings each other, which is the first “mutual” case in these behaviors. Because the evolution of sexual cannibalism and nuptial feeding has been explained based on unilaterality, this mutual eating should have a new significance of reproduction. We described this behavior quantitatively and suggest a new hypothesis based on true monogamy, the mating system ofS. taiwanensis, copulating with only one mate throughout life. Under true monogamy, the fitness of the mate is the same as own fitness and the pairs are free from sexual conflict. If the wing eating increases the ability of the mate to raise the offspring, this behavior is adaptive for the eater as well as its mate.