...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ICES Journal of Marine Science >Early post-settlement mortality of the scallop Pecten fumatus and the role of algal mats as a refuge from predation
【24h】

Early post-settlement mortality of the scallop Pecten fumatus and the role of algal mats as a refuge from predation

机译：扇贝骨扇贝的早期定居后死亡率以及藻类垫子作为捕食的避难所的作用

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

Early post-settlement mortality is one of the main processes determining distribution and abundance patterns of marine benthic invertebrates. Most scallops have an attached phase as spat before they release the byssus and move onto the soft sediments. Thus, spat differ from other stages of life in their use of microhabitat, lack of mobility, and therefore in their vulnerability to mortality processes such as predation. However, the contribution of predation to explain levels of mortality experienced by spat and early juvenile scallops is unknown. Complex habitats such as seagrasses and algae provide a substrate upon which spat can attach and might confer an advantage as a refuge from predation. This study investigates the contribution of early post-settlement predation on abundance of Pecten fumatus and determines the role of the algae Hincksia sordida as a refuge from predation. Data were collected using field observations, a predator exclusion experiment, and tethering techniques. Mortality of up to 85% during the first weeks after settlement appeared to have prevented the establishment of an adult population at our study site. Mats of the macroalgae H. sordida provided a settlement substrate for P. fumatus spat. However, increased algal biomass did not provide greater protection from predation to juvenile scallops than lower algal biomass. Our study suggests that prey survival in submersed vegetation is likely to be dynamic among years, and affected by prey behaviour and density as well as the characteristics of the submerged vegetation.
机译：定居后的早期死亡是确定海洋底栖无脊椎动物分布和丰度模式的主要过程之一。大多数扇贝在释放贝苏斯并移至软质沉积物之前，都具有附着相作为吐口。因此，在使用微生境，缺乏活动能力以及因此对诸如捕食等死亡过程的脆弱性方面，吐槽不同于生活的其他阶段。然而，掠夺性能解释鱼苗和早期扇贝的死亡率是未知的。诸如海草和藻类等复杂的栖息地提供了可以附着spa的底物，并可能带来掠食性庇护所的优势。这项研究调查了定居后早期捕食对富马果蝇数量的贡献，并确定了藻类Hincksia sordida作为避开捕食者的作用。使用实地观察，捕食者排除实验和网络共享技术收集数据。在定居后的最初几周内高达85％的死亡率似乎阻止了我们研究地点的成年人口建立。大型藻类H. sordida的垫子为富马假单胞菌的吐出物提供了沉降基质。但是，与较低的藻类生物量相比，藻类生物量的增加并未提供从捕食到幼贝的更大保护。我们的研究表明，淹没植被中的猎物存活可能会随年份变化，并受猎物行为和密度以及淹没植被特征的影响。

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