Mating success in the spittlebug Cercopis sanguinolenta (Scopoli, 1763) (Homoptera, Cercopidae):: the role of body size and mobility
Mating success in the spittlebug Cercopis sanguinolenta (Scopoli, 1763) (Homoptera, Cercopidae):: the role of body size and mobility
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DOI：
10.1007/s10164-002-0048-9
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发表时间：
2002-01-01
影响因子：
0.9
通讯作者：
Biedermann, R
中科院分区：
文献类型：
--
作者：
Biedermann, R
在昆虫中，两性尺寸二态性通常发生，雌性体型较大。然而，与这一普遍规律不同的是，在某些物种中发现了体型较大的雄性。在这些物种中，通常假定体型较大的雄性会进行性选择。血尾吐虫表现出明显的性别大小二态性，雄性较大。在野外种群中对雄性和雌性的交配成功率进行了研究。本研究的目的是研究导致观察到的非随机交配模式的机制。结果显示交配模式不存在体型匹配，男性的交配成功率与体型之间存在相关性。在女性中没有发现这种相关性。雄性的机动性取决于它们的体型，只有当雌性在场时机动性才高。然而，在协方差分析中发现，在控制体型的情况下，雄性交配成功率与机动性无关。吐沫虫的交配制度被归类为争夺竞争一夫多妻制。
In insects, a sexual size dimorphism commonly occurs, with larger females. However, as a deviation from this general rule, larger males are found in some species. In these species often sexual selection for large males has been presumed. The spittlebug Cercopis sanguinolenta exhibits a distinct sexual size dimorphism with larger males. Mating behaviour was studied in a field population in respect to mating success of males and females. The aim of this study was to examine the mechanisms that lead to the observed non-random mating pattern. The results showed a mating pattern without size-assortative mating, A correlation was found between mating success and body size in males. In females no such correlation was found. The mobility of males depends on their body size and mobility is high only when females are present. However, in an analysis of covariance it was found that male mating success is not correlated with mobility, when controlled for body size. The mating system of the spittlebug was classified as scramble competition polygyny.