• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology progress series >Effects of capture surface morphology on feeding success of scyphomedusae: a comparative study
【24h】

Effects of capture surface morphology on feeding success of scyphomedusae: a comparative study

机译：捕获表面形态对鞘翅目的美甲成功饲养的影响

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

Predation by feeding-current foraging medusae can have detrimental effects on prey populations. Understanding the mechanics that control prey selection and ingestion rates with different types of prey enables us to better predict the predatory impact of these medusae. We quantified the outcomes of each post-entrainment stage of the feeding process in multiple scyphozoan jellyfish species to understand how post-entiainment feeding events influence feeding patterns. Using 3-dimensional video, we observed and quantified the fate of both passive and actively swimming prey that were entrained in the feeding current of 5 different scyphomedusan species belonging to the orders Semaeostomeae and Rhizostomeae. Less than 65 % of entrained prey contacted the capture surfaces (termed contact efficiency) of the semaeostome medusae, while the rhizostome medusae came into contact with less than 35% of the prey entrained in the feeding cuiient. However, when contacted, prey were veiy likely to be ingested ( 90%) by all species examined. These results suggest that prey capture by oblate medusae appears to be largely limited by the probability that prey entrained in the feeding current will contact a capture surface. As a passive process, this contact stage of the feeding process is directly affected by the morphology of the contact surfaces. The importance of the contact stage of the feeding process suggests that differences in prey selection patterns observed among oblate medusan taxa are likely dominated by the morphology of contact surfaces as opposed to traits which influence the other stages of the feeding process, i.e. bell shape and nematocysts.
机译：饲草觅食美杜莎的捕食会对猎物种群产生不利影响。了解控制不同种类猎物的食饵选择和摄入速率的机制，使我们能够更好地预测这些水母的掠食性影响。我们量化了多种后生水母种类的摄食过程中每个诱捕阶段的结果，以了解诱捕后的摄食事件如何影响摄食模式。使用3维视频，我们观察并定量了被动和主动游泳猎物的命运，这些猎物被归类于Semaeostomeae和Rhizostomeae的5种不同的鞘翅目物种的摄食电流。不到65％的被捕食者接触水ema（Semaeostome medusae）的捕获表面（称为接触效率），而水母（Rhizostome medusae）与进食时被夹带的猎物接触的不足35％。但是，与之接触时，所检查的所有物种均很容易摄入猎物（> 90％）。这些结果表明，扁桃水母捕获的猎物似乎受到捕食进食电流中的猎物接触捕获表面的可能性的很大限制。作为被动过程，进料过程的该接触阶段直接受到接触表面形态的影响。饲喂过程接触阶段的重要性表明，在扁食Medusan类群中观察到的猎物选择模式的差异可能是由接触表面的形态主导的，而不是影响饲喂过程其他阶段的特征，例如钟形和线虫。

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