• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Inter- and intra-specific variation of d13C and d15N in deposit- and suspension-feeding bivalves (Macoma balthica and Cerastoderma edule): Evidence of ontogenetic changes in feeding mode of Macoma balthica
【2h】

Inter- and intra-specific variation of d13C and d15N in deposit- and suspension-feeding bivalves (Macoma balthica and Cerastoderma edule): Evidence of ontogenetic changes in feeding mode of Macoma balthica

机译：沉积物和悬浮物喂养双壳类动物（Macoma balthica和Cerastoderma edule）中d13C和d15N的种间和种内变化：Macoma balthica喂养方式个体发生变化的证据

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Deposit and suspension feeders can switch feeding behavior and show variations in feeding mode as individuals pass through life-cycle stages. Stable carbon and nitrogen isotopes were used to trace changes in diet of the tellinid bivalves M. balthica (facultative deposit feeder) and C. edule (obligatory suspension feeder), according to their size class. Analyses of variance showed differences in the d13C between the species. C. edule showed a diet composed of microphytoplankton, whereas M. balthica could feed on a mixed diet of microalgae from benthos and plankton. Values of d13C depended significantly on body size in M. balthica, providing evidence of ontogenetic variation in diet with small juveniles feeding entirely on microphytobenthos, while there was a gradual tendency for larger sizes to feed more on microphytoplankton. Therefore, although these species rely on different sources of food, large animals of M. balthica can overlap the trophic niche of C. edule. Population dynamics of the animals should be considered in food-web studies
机译：当个体经过生命周期阶段时，沉积和悬浮喂食器可以切换喂食行为并显示喂食模式的变化。根据其大小等级，使用了稳定的碳和氮同位素来追踪the类双壳类动物巴尔蒂卡（M. balthica）（兼性沉积物进料器）和淡水梭菌（C. edule）的饮食变化。方差分析显示了物种之间d13C的差异。淡淡梭状芽孢杆菌显示出一种由微浮游植物组成的饮食，而M. balthica可以以底栖生物和浮游生物的微藻类混合饮食为食。 d13C的值在很大程度上取决于鱼的体型，为小型个体完全以微底栖鱼类为食提供了饮食中个体发生变化的证据，而较大的个体则逐渐倾向于以微浮游植物为食。因此，尽管这些物种依靠不同的食物来源，但巴氏支原体的大型动物仍可与小。原体的营养生态位重叠。在食物网研究中应考虑动物的种群动态

著录项

相似文献

  • 外文文献
代理获取

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