Arid
DOI10.1086/666988
Immune Indexes of Larks from Desert and Temperate Regions Show Weak Associations with Life History but Stronger Links to Environmental Variation in Microbial Abundance
Horrocks, Nicholas P. C.1; Hegemann, Arne1; Matson, Kevin D.1; Hine, Kathryn1,2; Jaquier, Sophie1; Shobrak, Mohammed3; Williams, Joseph B.4; Tinbergen, Joost M.1; Tieleman, B. Irene1
通讯作者Horrocks, Nicholas P. C.
来源期刊PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
ISSN1522-2152
EISSN1537-5293
出版年2012
卷号85期号:5页码:504-515
英文摘要

Immune defense may vary as a result of trade-offs with other life-history traits or in parallel with variation in antigen levels in the environment. We studied lark species (Alaudidae) in the Arabian Desert and temperate Netherlands to test opposing predictions from these two hypotheses. Based on their slower pace of life, the trade-off hypothesis predicts relatively stronger immune defenses in desert larks compared with temperate larks. However, as predicted by the antigen exposure hypothesis, reduced microbial abundances in deserts should result in desert-living larks having relatively weaker immune defenses. We quantified host-independent and host-dependent microbial abundances of culturable microbes in ambient air and from the surfaces of birds. We measured components of immunity by quantifying concentrations of the acute-phase protein haptoglobin, natural antibody-mediated agglutination titers, complement-mediated lysis titers, and the microbicidal ability of whole blood. Desert-living larks were exposed to significantly lower concentrations of airborne microbes than temperate larks, and densities of some bird-associated microbes were also lower in desert species. Haptoglobin concentrations and lysis titers were also significantly lower in desert-living larks, but other immune indexes did not differ. Thus, contrary to the trade-off hypothesis, we found little evidence that a slow pace of life predicted increased immunological investment. In contrast, and in support of the antigen exposure hypothesis, associations between microbial exposure and some immune indexes were apparent. Measures of antigen exposure, including assessment of host-independent and host-dependent microbial assemblages, can provide novel insights into the mechanisms underlying immunological variation.


类型Article
语种英语
国家Netherlands ; Switzerland ; Saudi Arabia ; USA
收录类别SCI-E
WOS记录号WOS:000308067900010
WOS关键词TROPICAL BIRDS ; TRADE-OFFS ; ECOLOGICAL IMMUNOLOGY ; ATMOSPHERIC BACTERIA ; AIRBORNE PARTICLES ; ARABIAN DESERT ; DEFENSE ; HAPTOGLOBIN ; INVESTMENT ; DIVERSITY
WOS类目Physiology ; Zoology
WOS研究方向Physiology ; Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/174404
作者单位1.Univ Groningen, Anim Ecol Grp, Ctr Evolutionary & Ecol Studies, NL-9700 CC Groningen, Netherlands;
2.Univ Lausanne Sorge, Dept Ecol & Evolut, CH-1015 Lausanne, Switzerland;
3.Taif Univ, Dept Biol, Coll Sci, At Taif 21974, Saudi Arabia;
4.Ohio State Univ, Dept Ecol Evolut & Organismal Biol, Columbus, OH 43210 USA
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GB/T 7714
Horrocks, Nicholas P. C.,Hegemann, Arne,Matson, Kevin D.,et al. Immune Indexes of Larks from Desert and Temperate Regions Show Weak Associations with Life History but Stronger Links to Environmental Variation in Microbial Abundance[J],2012,85(5):504-515.
APA Horrocks, Nicholas P. C..,Hegemann, Arne.,Matson, Kevin D..,Hine, Kathryn.,Jaquier, Sophie.,...&Tieleman, B. Irene.(2012).Immune Indexes of Larks from Desert and Temperate Regions Show Weak Associations with Life History but Stronger Links to Environmental Variation in Microbial Abundance.PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY,85(5),504-515.
MLA Horrocks, Nicholas P. C.,et al."Immune Indexes of Larks from Desert and Temperate Regions Show Weak Associations with Life History but Stronger Links to Environmental Variation in Microbial Abundance".PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY 85.5(2012):504-515.
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