Condition-dependent reproduction and habitat selection in bark beetles

树皮甲虫的条件依赖性繁殖和栖息地选择

• 批准号: 154281-2007
• 负责人: Reid, Mary
• 金额: $ 1.61万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=497550
• 关键词: Condition; dependent; reproduction; habitat; selection

When searching for habitat, individuals in better condition should be more likely to find better habitat than those in poorer condition. This observation is supported by my previous NSERC-sponsored research on bark beetles (Scolytinae). It may then follow that offspring of individuals in good condition will also be in good condition and also find good habitat. This has been called the silver spoon effect, and may influence reproductive strategies, fitness, and micro-evolution within populations. There may also be direct maternal effects that are independent of habitat effects. My research program will examine the relative importance of silver spoon and maternal effects in two species of bark beetles through lab and field studies. The results of this research has implications for optimal offspring sex ratios, and may explain a perplexing female-bias in mountain pine beetles, Dendroctonus ponderosae, that has implications for many taxa. In addition to addressing fundamental questions of optimal reproductive tactics, this research is pertinent to understanding and managing pest species of bark beetles such as mountain pine beetles.

在寻找栖息地时，条件较好的个体应该比条件较差的个体更有可能找到更好的栖息地。 这一观察结果得到了我以前NSERC赞助的关于小蠹（Scolytinae）的研究的支持。 因此，条件好的个体的后代也会条件好，也会找到好的栖息地。 这被称为银勺效应，可能会影响种群内的生殖策略、适应性和微观进化。 也可能存在独立于生境影响的直接母体效应。 我的研究计划将通过实验室和实地研究来研究银勺和母性效应在两种小蠹中的相对重要性。 这项研究的结果有影响的最佳后代的性别比例，并可能解释一个令人困惑的女性偏见在山松甲虫，Dendroctonus ponderosae，这对许多类群的影响。 除了解决最佳繁殖策略的基本问题，这项研究是相关的了解和管理害虫种类的树皮甲虫，如山松甲虫。