SEXUAL SELECTION BY MALE MALE COMPETITION IN NATTERJACK TOAD CHORUSES
SEXUAL SELECTION BY MALE MALE COMPETITION IN NATTERJACK TOAD CHORUSES
复制标题
DOI：
10.1038/306261a0
复制
发表时间：
1983-01-01
期刊：
影响因子：
64.8
通讯作者：
ARAK, A
中科院分区：
文献类型：
--
作者：
ARAK, A
性选择理论的一个主要争议是，雄性用于展示的性二型性状是否是通过雄性-雄性竞争、雌性选择或两者兼而有之而产生的1 -4。在这里，我描述的合唱行为的男性natterjack蟾蜍（蟾蜍calamita）和显示的音高的广告呼叫是一个重要的决定因素，男性交配成功。使用合成叫声的回放实验表明，当雄性竞争叫声地点时，它们使用叫声音高来评估对手的体型和战斗能力。虽然女性发起交配，并有可能选择任何呼叫男性，在两个选择播放实验中，他们没有表现出交配偏好的基础上，呼吁音高。几位作者4 - 6提出，雄性的公共性展示在性内竞争中可能比配偶选择起着更重要的作用，但这是第一次通过操纵雄性展示中重要的信号特性来验证这一假设。
A major controversy of sexual selection theory is whether sexually dimorphic characters used in display by males have arisen through male–male competition, female choice, or both1–4. Here I describe the chorusing behaviour of male natterjack toads (Bufo calamita) and show that the pitch of the advertisement call is an important determinant of male mating success. Playback experiments using synthetic calls show that when males compete for calling sites they use call pitch to assess the body size and fighting ability of their opponents. Although females initiate mating and can potentially choose any calling male, in two-choice playback experiments, they showed no mating preference based on call pitch. Several authors4–6have suggested that communal sexual displays by males may have a more important role in intrasexual competition than mate choice, but this is the first time that this hypothesis has been tested experimentally by manipulating a signal property important in male display.