Sexual selection within mating swarms of the lovebug, Plecia nearctica (Diptera: Bibionidae)
Sexual selection within mating swarms of the lovebug, Plecia nearctica (Diptera: Bibionidae)
复制标题
爱虫交配群中的性选择，Plecia nearctica（双翅目：Bibionidae）
DOI：
10.1016/s0003-3472(80)80049-2
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发表时间：
1980
期刊：
影响因子：
2.5
通讯作者：
R. Thornhill
中科院分区：
文献类型：
--
作者：
R. Thornhill
人们对昆虫交配群体的结构和它们内部的性选择知之甚少。雄性恋虫（Plecia nearctica）在地面凋落物的出现点上方大群盘旋。雌性定期出现，并通过盘旋的雄性飞行。雌性可能在飞行前或飞行中被一只或多只雄性抓住。雄性之间的相互作用和爱虫群的结构显然与争夺新出现的雌性有关。恋虫群在垂直上有明显的分层：大的雄虫在最靠近地面的底部，中等大小的雄虫在中间，小的雄虫在离地面最远的顶部。体型较大的雄性离地面最近，更容易接近雌性，交配成功率也更高。
Little is known about the structure of mating aggregations of insects or sexual selection within them. Male lovebugs (Plecia nearctica) hover in large swarms above emergence sites in the ground litter. Females emerge periodically and take flight through the hovering males. Females may be grasped by one or more males before or during flight. Male-male interactions and the structure of lovebug swarms are clearly related to competition for access to emerging females. Lovebug swarms are distinctly stratified vertically: large males at the bottom nearest the ground, medium-sized males in the middle, and small males at the top farthest from the ground. Large males closest to the ground have better access to females and experience greater copulatory success.