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首页> 外文期刊>Environmental Science & Technology >Interspecific Differences in Egg Production Affect Egg Trace Element Concentrations after a Coal Fly Ash Spill
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Interspecific Differences in Egg Production Affect Egg Trace Element Concentrations after a Coal Fly Ash Spill

机译：种蛋间种间差异影响粉煤灰泄漏后鸡蛋中微量元素的浓度

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摘要

In oviparous vertebrates,trace elements transfer from mother to offspring during egg production.For animals that produce eggs slowly,like turtles,the trace element concentration of each egg reflects an integration of dietary and stored accumulation over the duration of vitellogenesis.Because turtles also produce eggs synchronously,all eggs within a clutch should exhibit uniform trace element concentrations.In contrast,for animals that produce eggs in sequence and primarily from current dietary resources,like many birds,the trace element concentrations of eggs should be less uniform within a clutch,and likely reflect short-term changes in dietary exposure.We tested the hypothesis that stinkpot turtle (Sternotherus odoratus) clutches exhibit lower variability and higher repeatability in barium,selenium,strontium,and thallium concentrations than those of tree swallows (Tachycineta bicolor) from a site impacted by a recent coal ash spill.All four trace elements exhibited significantly lower variability and significantly higher repeatability in stinkpot clutches than in swallow clutches.Mean trace element concentrations of stinkpot eggs were also significantly higher than those of swallow eggs although both species feed primarily on aquatic invertebrates.Variability in swallow egg trace element concentrations was partially due to significant laying order effects.Our results support the hypothesis that interspecific variation in the source of resources and in the synchronicity and rate of egg production can lead to interspecific differences in the variability of egg trace element concentrations.
机译：在卵生脊椎动物中，卵的生产过程中微量元素从母体转移到后代。对于缓慢产卵的动物（如海龟），每个卵中的微量元素浓度反映了卵黄发生期间饮食和储藏积累的综合。鸡蛋同时进行，离合中的所有蛋应表现出均匀的微量元素浓度。相反，对于按顺序主要从当前饮食资源生产鸡蛋的动物（如许多鸟类）来说，离合中蛋的微量元素浓度应不太均匀，我们测试了以下假设：st龟（Sternotherus odoratus）离合器的钡，硒，锶和th浓度比树吞（Tachycineta bicolor）的吞咽率低，变异性低，可重复性较高。受最近一次煤灰泄漏影响的地点。所有四个痕量元素均显示出明显降低r烟熏离合器的变异性和可重复性显着高于吞咽离合器。虽然两种物种主要以水生无脊椎动物为食，但烟熏鸡蛋的平均微量元素浓度也显着高于燕子鸡蛋。我们的研究结果支持以下假设：资源来源的种间差异以及产卵的同步性和速率会导致种蛋中微量元素浓度变异的种间差异。

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  • 来源
    《Environmental Science & Technology》 |2013年第23期|13763-13771|共9页
  • 作者

    James U.Van Dyke; Michelle L.Beck; Brian P.Jackson; William A.Hopkins;

  • 作者单位

    Department of Fish and Wildlife Conservation,Virginia Tech,106 Cheatham Hall,Blacksburg,Virginia 24061,United States;

    Department of Fish and Wildlife Conservation,Virginia Tech,106 Cheatham Hall,Blacksburg,Virginia 24061,United States;

    Trace Elements Analysis Core,Department of Earth Sciences,Dartmouth College,Hanover,North Hampshire 03755,United States;

    Department of Fish and Wildlife Conservation,Virginia Tech,106 Cheatham Hall,Blacksburg,Virginia 24061,United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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