• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Does the cost of a function affect its degree of plasticity? A test on plastic sex allocation in three closely related species of hermaphrodites
【24h】

Does the cost of a function affect its degree of plasticity? A test on plastic sex allocation in three closely related species of hermaphrodites

机译：功能的成本会影响其可塑性吗？对三个密切相关的雌雄同体物种进行可塑性性别分配的测试

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mating opportunities fluctuate in the wild and hermaphrodites have the chance of partitioning reproductive resources between their two sexual functions accordingly, i.e., they have a plastic sex allocation. Plasticity is usually promoted by environmental fluctuations but may be affected by species-specific factors, which may be revealed by comparisons between related species. We tested whether polychaete worms of three related species of simultaneous hermaphrodites, Ophryotrocha diadema, Ophryotrocha adherens and Ophryotrocha gracilis, had plastic male and female allocation. We measured the costs of the female function and investigated whether the costs might affect the magnitude of plasticity in this function. To these aims, we exposed adult worms to three levels of mating opportunities and measured their female and male functions. In our experimental conditions, there was no adjustment in the male function, the cheapest function, whereas the three species differed in how they adjusted their allocation into the female function to mating opportunities. O. diadema and O. adherens worms exhibited highly plastic female allocation, and plasticity was consistent across three measures of female function. In contrast, O. gracilis worms had a fixed female allocation, irrespective of mating opportunities. Additionally, when the sexual functions were relatively costly, their plasticity was greater than when they were relatively cheap. However, the magnitude of the plasticity did not depend solely on species-specific costs of the function, but also on the features of the mating system of each species.
机译：交配的机会在野外波动，雌雄同体有机会在其两个性功能之间相应地分配生殖资源，即他们具有可塑性的性别分配。可塑性通常是由环境波动促进的，但可能受特定物种因素的影响，这可以通过相关物种之间的比较来揭示。我们测试了三个同时发生的雌雄同体的相邻物种雌雄同体虫（Ophryotrocha diadema，Ophryotrocha遵守者和Ophryotrocha gracilis）是否具有可塑性的雄性和雌性分配。我们测量了女性功能的成本，并调查了这些成本是否会影响该功能的可塑性。为了实现这些目标，我们将成虫蠕虫暴露于三个交配机会水平，并测量了它们的雌雄功能。在我们的实验条件下，雄性功能（最便宜的功能）没有任何调整，而这三种物种在如何根据交配机会将其分配到雌性功能中的方式有​​所不同。 O. diadema和O.黏附蠕虫表现出高度可塑性的雌性分配，并且在三种雌性功能指标之间可塑性保持一致。相比之下，无论交配机会多大，灰叶蠕虫的雌性分配都是固定的。另外，当性功能相对昂贵时，其可塑性比相对便宜时更大。但是，可塑性的大小不仅取决于功能的特定物种成本，还取决于每种物种的交配系统的特征。

著录项

  • 来源
  • 作者

    D. Schleicherova; G. Sella; S. Meconcelli; R. Simonini; M.P. Martino; P. Cervella; M.C. Lorenzi;

  • 作者单位

    Institute of Animal Ecology and Evolution, University of Hannover, Buenteweg 17d, 30559 Hannover, Germany;

    Department of Life Sciences and Systems Biology, Universita di Torino, Via Accademia Albertina 13, 10123 Turin, Italy;

    Department of Life Sciences and Systems Biology, Universita di Torino, Via Accademia Albertina 13, 10123 Turin, Italy;

    Department of Animal Biology, Universita di Modem e Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy;

    Department of Animal Biology, Universita di Modem e Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy;

    Department of Life Sciences and Systems Biology, Universita di Torino, Via Accademia Albertina 13, 10123 Turin, Italy;

    Department of Life Sciences and Systems Biology, Universita di Torino, Via Accademia Albertina 13, 10123 Turin, Italy;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Mating opportunity; Ophryotrocha; Phenotypic plasticity; Polychaete worm; Simultaneous hermaphroditism;

    机译：交配机会;Ophryotrocha;表型可塑性多毛蠕虫;同时雌雄同体;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号