...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Limnology >Does atypical 15N and 13C enrichment in parasites result from isotope ratio variation of host tissues they are infected?
【24h】

Does atypical 15N and 13C enrichment in parasites result from isotope ratio variation of host tissues they are infected?

机译：非典型15N和13C富集在寄生虫中是由它们感染的宿主组织的同位素比变异引起的吗？

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

Contrary to a general rule of stable isotope trophic discrimination, parasites show great variation in isotope discrimination from their host muscle tissues. One of the possible mechanisms is that isotopic variation among host tissues may cause apparent deviation from the actual isotope discrimination between a parasite and a given host tissue consumed by the parasite. To test this possibility, we measured δ15N and δ13C for some fish parasites and a variety of their host tissues to estimate their actual trophic discrimination factors (Δ). All of the trematodes investigated showed positive Δ15Ν values and nearly zero Δ13C values, which are comparable to those of free-living consumers. Cestodes and nematodes showed great variations in their Δ15Ν and Δ13C values when they were compared to a particular tissue/mucus of their infection site. Acanthocephalans showed negative Δ15Ν and Δ13C values in comparison with host intestinal mucus, and a crustacean had δ values similar to those of host blood. Even in parasites infected to intestine, Δ15Ν and Δ13C values varied among higher taxa. These results suggested that atypical 15N and 13C enrichment of parasites is not caused by the variation in δ values among host tissues, but possibly by metabolic processes unique to each parasite taxon.
机译：与稳定同位素营养性歧视的一般规则相反，寄生虫对其宿主组织的同位素辨别出现了很大的变化。其中一个可能的机制是宿主组织之间的同位素变异可能导致寄生虫和寄生虫消耗的给定宿主组织之间的实际同位素辨别的明显偏差。为了测试这种可能性，我们测量了一些鱼寄生虫的Δ15n和δ13c，以及各种宿主组织来估计其实际营养歧视因子（δ）。所研究的所有发射曲线显示显示呈Δ15ν值和近零Δ13C值，其与自由生物消费者相当。 Cestodes和Nematodes在与其感染部位的特定组织/粘液比较时，它们的Δ15ν和Δ13C值显示出很大的变化。与宿主肠法粘液相比，丙烷骨表显示阴性Δ15ν和δ13C值，并且甲壳类动物具有与宿主血液类似的δ值。即使在感染肠道的寄生中，Δ15ν和Δ13C值也在高等的分类群中变化。这些结果表明，寄生虫的非典型15N和13C富集不是由宿主组织之间的δ值的变化引起的，但可能是每个寄生虫分类的代谢过程。

著录项

  • 来源
    《Limnology》 |2020年第1期|共11页
  • 作者

    Eri Kamiya; Misako Urabe; Noboru Okuda;

  • 作者单位

    1grid.412698.00000 0001 1500 8310Department of Ecosystem Studies School of Environmental ScienceThe University of Shiga PrefectureP. O. Box 522-8533Hassaka 2500HikoneShigaJapan;

    1grid.412698.00000 0001 1500 8310Department of Ecosystem Studies School of Environmental ScienceThe University of Shiga PrefectureP. O. Box 522-8533Hassaka 2500HikoneShigaJapan;

    2grid.410846.f0000 0000 9370 8809Research Institute for Humanity and NatureP.O. Box 603-8047Motoyama 457-4KamigamoKyotoJapan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 湖泊、水库;淡水生物;
  • 关键词

    Fish parasites; Stable isotope ratio; Trophic level; Parasite metabolism;

    机译：鱼寄生虫;同位素比率稳定;营养水平;寄生虫新陈代谢;

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