Effect of landscape and population variables on immune response in experimentally introduced bush-cricket populations
Effect of landscape and population variables on immune response in experimentally introduced bush-cricket populations
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DOI：
10.1007/s10980-009-9348-6
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发表时间：
2009-07-01
影响因子：
5.2
通讯作者：
Berggren, Asa
中科院分区：
文献类型：
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作者：
Berggren, Asa
尽管人们对生态变量与个体免疫功能之间的关系越来越感兴趣，但来自野生种群的经验数据却很少。在这项研究中，我通过测量个体对手术植入的尼龙单丝的封装反应，分析了来自 20 个实验引入种群的 370 只野生捕获的蟋蟀（Metrioptera roeseli）的免疫反应。与来自较小栖息地区域的个体相比，来自较大栖息地区域的蟋蟀的后代表现出更强的免疫反应。此外，免疫反应与引入位点的线性元件的量之间存在显着的正相关性。然而，种群变量（即繁殖体大小和种群增长率）对免疫反应缺乏影响。这些结果表明，大范围的环境参数，例如斑块大小和连通性，对于个体的生理健康及其防御致病因子的能力非常重要。这种影响可能会加剧与亚种群隔离和栖息地破碎化相关的负面影响。
Despite the growing interest in relationships between ecological variables and individual immune function, few empirical data have been available from wild populations. In this study, I assayed the immune response from 370 wild-caught bush-crickets, Metrioptera roeseli, from 20 experimentally introduced populations, by measuring individual encapsulation responses to a surgically implanted nylon monofilament. Bush-crickets descended from populations introduced into larger habitat patches showed a greater immune response when compared to individuals from smaller habitat-area introductions. Also, there was a significant positive correlation between immune response and the amount of linear elements at the introduction site. However, there was a lack of effect of population variables (i.e., propagule size and rate of population growth) on immune response. These results suggest that large-scale environmental parameters, such as patch size and connectivity, can be important for an individual's physiological health and its ability to defend against disease-causing agents. Such effects are likely to compound the negative impacts associated with isolation of sub-populations and habitat fragmentation.