Resource tracking and costs of wing wear in foraging bumble bees

觅食熊蜂的资源跟踪和翅膀磨损成本

• 批准号: 194695-2006
• 负责人: Cartar, Ralph
• 金额: $ 1.43万
• 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: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=335114
• 关键词: Resource; tracking; costs; wing; wear

This research has two themes, both featuring the feeding behaviour of bumble bees. First, it considers resource-tracking: how do competing bees distribute themselves across available flowers, and what are the consequences of this distribution?  At a fine scale, it examines how bees might use "snapshots" of nectar distribution in flowers to infer which plants are worth revisiting.  At a landscape scale, it examines how the reproductive success of plants that bees visit is affected by a particular distortion of resource-tracking caused by logging.  Second, it considers costs of wing wear to bumble bees.  We know that wing wear shortens bee lives, but we don't know how wing use causes wing wear.  We know that wing wear has minor effects on flight performance in simple habitats, but don't know how wing wear affects flight in the more complex ones that bees inhabit.  Finally, the influence of wing wear on resource tracking is examined with regard to two traits known to independently affect foraging behaviour: bee body size and density of plants.  Overall, this research uses foraging bumble bees to tell us something about how, in nature, consumers dynamically exploit resources, and wear out while so doing.

这项研究有两个主题，都以熊蜂的摄食行为为特色。首先，它考虑了资源追踪：竞争的蜜蜂如何在可用的花朵中分配自己，这种分配的后果是什么？ 在一个精细的尺度上，它考察了蜜蜂如何利用花朵中花蜜分布的“快照”来推断哪些植物值得重新访问。在一个景观尺度上，它考察了蜜蜂访问的植物的繁殖成功如何受到伐木造成的资源追踪的特殊扭曲的影响。第二，它考虑了翅膀磨损对大黄蜂的成本。我们知道翅膀磨损缩短了蜜蜂的寿命，但我们不知道翅膀的使用是如何导致翅膀磨损的。我们知道翅膀磨损对简单栖息地的飞行性能有轻微的影响，但不知道翅膀磨损如何影响蜜蜂栖息地更复杂的飞行。最后，翅膀磨损对资源追踪的影响是关于两个已知独立影响觅食行为的特征进行检查的：蜜蜂的身体大小和植物的密度。总的来说，这项研究使用觅食的大黄蜂告诉我们一些关于在自然界中，消费者如何动态地利用资源，并在这样做的同时磨损。