• 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 >Lack of biotic resistance to an invasive bivalve irrespective of season or hydrodynamic disturbance
【24h】

Lack of biotic resistance to an invasive bivalve irrespective of season or hydrodynamic disturbance

机译：无论季节或流体动力干扰如何，都缺乏生物抗侵袭性分子

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

Coastal ecosystems are subject to a wide variety of abiotic variation including seasonal fluctuations and hydrodynamic disturbance, which can influence species distributions. Additionally, introductions of invasive species are creating biotic pressures within coastal ecosystems, which can influence biological interactions. With the recent development of combining comparative functional responses, prey switching and biotic resistance theory in invasion ecology, invasion success and ecological impacts of invaders can be better quantified. Further, the incorporation of environmental contexts with these approaches allows predictions of invader success under a range of ecological scenarios. We examined the functional responses and prey switching propensities of the native European green crab, Carcinus maenas (Linnaeus, 1758), towards native blue mussels, Mytilus edulis (Linnaeus, 1758), and invasive Pacific oysters, Crassostrea (Magallana) gigas (Thunberg, 1793), under the abiotic contexts of season (winter vs summer) and hydrodynamic disturbance level (high vs low). In general, when each prey species was offered separately, C. maenas maximum feeding rates were higher towards native M. edulis compared to invasive C. gigas. In addition, handling times were lower, and thus maximum feeding rates were higher, in summer compared to winter. Hydrodynamic disturbance level had no significant influence on handling times or maximum feeding rates towards either prey species. When prey species were offered simultaneously, C. maenas disproportionately consumed native M. edulis over invasive C. gigas irrespective of proportional availability. In addition, increased hydrodynamic disturbance further increased the disproportionate consumption of M. edulis over C. gigas. We thus demonstrate that C. maenas offers little biotic resistance to invasions of C. gigas under a range of abiotic contexts, and indeed some of these contexts may exacerbate the invasion. We suggest that combined functional response and prey switching studies provide a wealth of information regarding invasion success and biotic resistance towards invasive species under environmental variation.
机译：沿海生态系统受各种非生物变化，包括季节性波动和流体动力干扰，可以影响物种分布。此外，侵入物种的介绍正在沿海生态系统内产生生物压力，这可以影响生物相互作用。随着近期发展的比较功能反应，猎物交换和生物阻力理论在入侵生态学，入侵成功和入侵者的生态影响可以更好地量化。此外，通过这些方法纳入环境范围允许在一系列生态情景下预测入侵者成功。我们审查了欧洲天然绿色螃蟹，MAENAS（LINNAEUS，1758）的功能响应和猛禽切换促使，朝向天然蓝贻贝，米蒂斯（Linnaeus，1758）和侵入性太平洋牡蛎，Crassostra（Magallana）Gigas（Thunberg， 1793），在季节的非生物背景下（冬季VS夏季）和流体动力扰动水平（高VS低）。一般来说，当每种猎物单独提供时，与侵袭性C. Gigas相比，C. maenas最大喂料率较高，朝向天然M. Edulis。此外，处理时间较低，因此夏季与冬季相比，最大喂养速率较高。流体动力扰动水平对处理时间或最大喂养速率对任何一种猎物物种没有显着影响。当同时提供猎物物种时，C. maenas不合适地消耗天然的M. eDulis，而不是对侵入性的C. Gigas无论比例的可用性如何。此外，增加的流体动力扰动进一步提高了C.吉利斯的M. Edulis的不成比例消耗。因此，我们表明，在一系列非生物背景下，C. Maenas对C. Gigas的侵蚀性很少。这些背景中的一些情况可能会加剧侵袭。我们建议合并的功能反应和猎物交换研究提供了有关在环境变异下对侵入物种的入侵成功和生物抗性的大量信息。

著录项

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