期刊文献

Black widows in an urbanized desert: spatial variation and condition dependence of the red hourglass 收藏

城市化沙漠中的黑寡妇：红色沙漏的空间变化和条件依赖性

原文求助发布源

作者

J Chadwick Johnson;Theresa M Gburek;Dale R Stevens, II

关键词

HIREC;urbanization;condition dependence;aposematic coloration

关键词译文

HIREC;城市化;条件依赖;选择性着色

发布日期

28 November 2017

DOI

10.1093/jue/jux013

来源信息

Journal of Urban Ecology ISSN：e2058-5543, 2017年, 3卷, 1期

摘要

Urbanization is an incredibly prevalent form of human-induced rapid environmental change. Certain taxa dominate urban habitats and condition-dependent phenotypic changes may be the mechanism by which these species flourish in disturbed habitats. The western black widow spider (Latrodectus hesperus) forms infestations in urban habitats. Here, we show that urban spiders are significantly larger than desert spiders. Other measures of morphology and color showed spatial variation across collection sites, despite not being different between urban and desert habitats. Further, we show that the size of the black widow’s red hourglass is condition-dependent. As the hourglass is assumed to play an aposematic role, our results show that spatial heterogeneity in body condition predicts variation in hourglass area and potentially aposematic signaling, enemy risk and survival.

摘要译文

城市化是人类引起的快速环境变化的一种非常普遍的形式。某些分类群主导城市栖息地和条件依赖的表型变化可能是这些物种在受干扰的栖息地中繁殖的机制。西部黑寡妇蜘蛛（Latrodectus hesperus）在城市栖息地形成侵袭。在这里，我们表明城市蜘蛛比沙漠蜘蛛大得多。尽管在城市和沙漠栖息地之间没有差异，但其他形态和颜色的测量显示了收集地点之间的空间变化。此外，我们表明黑寡妇的红色沙漏的大小是依赖于条件的。由于沙漏被认为起到了一个起作用，我们的研究结果表明，身体状况的空间异质性可以预测沙漏区域的变化和潜在的信号传递，敌人的风险和生存。

J Chadwick Johnson;Theresa M Gburek;Dale R Stevens, II. Black widows in an urbanized desert: spatial variation and condition dependence of the red hourglass[J]. Journal of Urban Ecology, 2017,3(1)