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首页> 外文期刊>Marine biology >Analysis of fatty acids and fatty alcohols reveals seasonal and sex-specific changes in the diets of seabirds
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Analysis of fatty acids and fatty alcohols reveals seasonal and sex-specific changes in the diets of seabirds

机译：脂肪酸和脂肪醇的分析揭示了海鸟饮食中的季节性和性别特定变化

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摘要

A key challenge in ecology is to find ways to obtain complete and accurate information about the diets of animals. To respond to this challenge in seabirds, traditional methods (usually stomach content analysis or observations of prey at nests) have been supplemented with indirect methods or molecular trophic markers. These techniques have the potential to extend the period of investigation outside the few short months of breeding and avoid biases. Here, we use an analysis of fatty acids (FAs) and fatty alcohols (FALs) from blood, adipose tissue and stomach oil to investigate how the diets of male and female common guillemots (Uria aalge), black-legged kittiwakes (Rissa tridactyla) and northern fulmars (Fulmarus gla-cialis) differed through the sampling period (prelaying and breeding season) and by sex. Diets of both sexes of all three species generally varied across the season, but sex differences were apparent only in fulmars during prelaying. Our study shows that FA/FAL analysis can provide significant insights into diets of seabirds, in particular periods of the annual cycle which are not readily studied using traditional methods.
机译：生态学中的一个关键挑战是找到获取有关动物饮食的完整而准确的信息的方法。为了应对海鸟的这一挑战，传统方法（通常是胃含量分析或在巢中观察猎物）已被间接方法或分子营养标记物所补充。这些技术有可能将调查期延长至短短几个月的繁殖期，并避免出现偏差。在这里，我们使用血液，脂肪组织和胃油中的脂肪酸（FAs）和脂肪醇（FALs）进行分析，以研究雄性和雌性海雀（Uria aalge），黑脚Kittiwakes（Rissa tridactyla）的饮食北方黄貂鱼（Fulmarus gla-cialis）在采样期（繁殖和繁殖季节）和性别方面有所不同。这三个物种的性别饮食通常在整个季节有所不同，但性别差异仅在预产期的部才明显。我们的研究表明，FA / FAL分析可以为海鸟的饮食提供重要的见识，尤其是在年度周期的某些时期，这是传统方法无法轻易研究的。

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  • 来源
    《Marine biology》 |2013年第4期|987-999|共13页
  • 作者

    Ellie Owen; Francis Daunt; Colin Moffat; David A. Elston; Sarah Wanless; Paul Thompson;

  • 作者单位

    Centre for Ecology & Hydrology, Bush Estate, Penicuik,Midlothian EH26 0QB, UK,Marine Laboratory, Marine Scotland Science, PO Box 101, 375 Victoria Road, Aberdeen AB11 9BD, UK,Lighthouse Field Station, Institute of Biological and Environmental Sciences, University of Aberdeen,Cromarty IV1 8YL, UK,RSPB Etive House, Beechwood Park, Inverness IV2 3BW, UK;

    Centre for Ecology & Hydrology, Bush Estate, Penicuik,Midlothian EH26 0QB, UK;

    Marine Laboratory, Marine Scotland Science, PO Box 101, 375 Victoria Road, Aberdeen AB11 9BD, UK;

    Biomathematics and Statistics Scotland, Craigiebuckler,Aberdeen AB15 8QH, UK;

    Centre for Ecology & Hydrology, Bush Estate, Penicuik,Midlothian EH26 0QB, UK;

    Lighthouse Field Station, Institute of Biological and Environmental Sciences, University of Aberdeen,Cromarty IV1 8YL, UK;

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