Desjonquères Camille, Speck Bretta, Rodríguez Rafael Lucas
Behavioral & Molecular Ecology Group, Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
Behavioral & Molecular Ecology Group, Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
Behav Processes. 2019 Sep;166:103887. doi: 10.1016/j.beproc.2019.06.010. Epub 2019 Jun 17.
We recently discovered that there is a social ontogeny of signals and preferences in Enchenopa treehoppers. Nymphs signalled throughout their development; some signal features changed gradually and in sexually dimorphic ways throughout ontogeny; and some adult male signal features and female mate preferences differed between individuals reared in isolation or groups. In this paper, we investigate whether signalling interactions during ontogeny are a cause of plasticity in mating signals and preferences. We subjected Enchenopa nymphs to treatments of either: rearing in aggregations (the natural condition), in isolation, or in isolation with playbacks of nymph signals. We then described variation in the signals and mating preferences of individuals that developed in those conditions. The playback treatments partially "rescued" the signal and preference phenotypes, resulting in phenotypes either similar to those that result from rearing in aggregations, or intermediate between those that result from rearing in isolation or in aggregations. These results pin-point signalling interactions during ontogeny as an important cause of plasticity in signals and mate preferences.
我们最近发现，恩氏角蝉的信号和偏好存在社会个体发育过程。若虫在整个发育过程中都会发出信号；在个体发育过程中，一些信号特征会以性别二态性的方式逐渐变化；而且，单独饲养或群体饲养的成年雄性的一些信号特征和雌性的配偶偏好存在差异。在本文中，我们研究了个体发育过程中的信号交互作用是否是交配信号和偏好可塑性的一个原因。我们将恩氏角蝉若虫进行如下处理：聚集饲养（自然条件）、单独饲养，或单独饲养并播放若虫信号。然后，我们描述了在这些条件下发育的个体的信号和交配偏好的变化。播放信号处理部分“挽救”了信号和偏好表型，产生的表型要么类似于聚集饲养产生的表型，要么介于单独饲养或聚集饲养产生的表型之间。这些结果表明，个体发育过程中的信号交互作用是信号和配偶偏好可塑性的一个重要原因。
