Life history correlates of fecal bacterial species richness in a wild population of the blue tit Cyanistes caeruleus.
Life history correlates of fecal bacterial species richness in a wild population of the blue tit Cyanistes caeruleus.
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DOI：
10.1002/ece3.1384
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发表时间：
2015-02
影响因子：
2.6
通讯作者：
Hartley, Ian R.
中科院分区：
文献类型：
--
作者：
Benskin, Clare McW. H.;Rhodes, Glenn;Pickup, Roger W.;Mainwaring, Mark C.;Wilson, Kenneth;Hartley, Ian R.
关键词：
关于野生鸟类的正常胃肠道植物群，或者它如何影响或反映宿主的生活史特征，人们知之甚少。本研究旨在调查蓝山雀Cyanistes caeruleus野生种群粪便中细菌的物种丰富度，并探讨细菌物种丰富度与各种生活史特征（如年龄、性别和繁殖成功率）之间的关系。利用PCR-TGGE技术，在蓝山雀粪便中鉴定出55个操作分类单位（OTU）。DNA测序显示，16 S rRNA基因从多种细菌中扩增，包括与地衣芽孢杆菌、拉里弯曲杆菌、假单胞菌属、和沙门氏菌对于成年人，有一个显着的负相关的细菌物种丰富度和被检测到活着的可能性在接下来的繁殖季节;细菌丰富度是一致的，但通过繁殖季节下降;和繁殖对有显着更相似的细菌丰富度比预期的机会。降低的成虫存活率与最类似于C. lari的OTU的存在相关;增强的成虫存活率与最类似于节杆菌属的OTU相关。对于雏鸟来说，孵化后第一周和第二周之间的细菌物种丰富度没有显著变化，并且共享同一个巢的雏鸟具有显著更相似的细菌丰富度。总的来说，这些结果提供了令人信服的证据表明，细菌物种丰富度与宿主生活史的几个方面有关。
Very little is known about the normal gastrointestinal flora of wild birds, or how it might affect or reflect the host's life-history traits. The aim of this study was to survey the species richness of bacteria in the feces of a wild population of blue tits Cyanistes caeruleus and to explore the relationships between bacterial species richness and various life-history traits, such as age, sex, and reproductive success. Using PCR-TGGE, 55 operational taxonomic units (OTUs) were identified in blue tit feces. DNA sequencing revealed that the 16S rRNA gene was amplified from a diverse range of bacteria, including those that shared closest homology with Bacillus licheniformis, Campylobacter lari, Pseudomonas spp., and Salmonella spp. For adults, there was a significant negative relationship between bacterial species richness and the likelihood of being detected alive the following breeding season; bacterial richness was consistent across years but declined through the breeding season; and breeding pairs had significantly more similar bacterial richness than expected by chance alone. Reduced adult survival was correlated with the presence of an OTU most closely resembling C. lari; enhanced adult survival was associated with an OTU most similar to Arthrobacter spp. For nestlings, there was no significant change in bacterial species richness between the first and second week after hatching, and nestlings sharing the same nest had significantly more similar bacterial richness. Collectively, these results provide compelling evidence that bacterial species richness was associated with several aspects of the life history of their hosts.
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